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linux/drivers/clk/clk-stm32f4.c

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clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
/*
* Author: Daniel Thompson <daniel.thompson@linaro.org>
*
* Inspired by clk-asm9260.c .
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/clk-provider.h>
#include <linux/err.h>
#include <linux/io.h>
clk: stm32f4: Add LSI & LSE clocks This patch introduces the support of the LSI & LSE clocks. The clock drivers needs to disable the power domain write protection using syscon/regmap to enable these clocks. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:28 +03:00
#include <linux/iopoll.h>
#include <linux/ioport.h>
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/of.h>
#include <linux/of_address.h>
clk: stm32f4: Add LSI & LSE clocks This patch introduces the support of the LSI & LSE clocks. The clock drivers needs to disable the power domain write protection using syscon/regmap to enable these clocks. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:28 +03:00
#include <linux/regmap.h>
#include <linux/mfd/syscon.h>
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
clk: stm32f4: Add PLL_I2S & PLL_SAI for STM32F429/469 boards This patch introduces PLL_I2S and PLL_SAI. Vco clock of these PLLs can be modify by DT (only n multiplicator, m divider is still fixed by the boot-loader). Each PLL has 3 dividers. PLL should be off when we modify the rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> [sboyd@codeaurora.org: Mark stm32f4_pll_div_ops static] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:13 +03:00
/*
* Include list of clocks wich are not derived from system clock (SYSCLOCK)
* The index of these clocks is the secondary index of DT bindings
*
*/
#include <dt-bindings/clock/stm32fx-clock.h>
#define STM32F4_RCC_CR 0x00
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
#define STM32F4_RCC_PLLCFGR 0x04
#define STM32F4_RCC_CFGR 0x08
#define STM32F4_RCC_AHB1ENR 0x30
#define STM32F4_RCC_AHB2ENR 0x34
#define STM32F4_RCC_AHB3ENR 0x38
#define STM32F4_RCC_APB1ENR 0x40
#define STM32F4_RCC_APB2ENR 0x44
clk: stm32f4: Add LSI & LSE clocks This patch introduces the support of the LSI & LSE clocks. The clock drivers needs to disable the power domain write protection using syscon/regmap to enable these clocks. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:28 +03:00
#define STM32F4_RCC_BDCR 0x70
#define STM32F4_RCC_CSR 0x74
clk: stm32f4: Add PLL_I2S & PLL_SAI for STM32F429/469 boards This patch introduces PLL_I2S and PLL_SAI. Vco clock of these PLLs can be modify by DT (only n multiplicator, m divider is still fixed by the boot-loader). Each PLL has 3 dividers. PLL should be off when we modify the rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> [sboyd@codeaurora.org: Mark stm32f4_pll_div_ops static] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:13 +03:00
#define STM32F4_RCC_PLLI2SCFGR 0x84
#define STM32F4_RCC_PLLSAICFGR 0x88
clk: stm32f4: Add post divisor for I2S & SAI PLLs This patch adds post dividers of I2S & SAI PLLs. These dividers are managed by a dedicated register (RCC_DCKCFGR). The PLL should be off before a set rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:14 +03:00
#define STM32F4_RCC_DCKCFGR 0x8c
clk: stm32f7: Introduce stm32f7 clocks for STM32F746 boards This patch enables clocks for STM32F746 boards. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-01-06 16:59:23 +03:00
#define STM32F7_RCC_DCKCFGR2 0x90
clk: stm32f4: Add post divisor for I2S & SAI PLLs This patch adds post dividers of I2S & SAI PLLs. These dividers are managed by a dedicated register (RCC_DCKCFGR). The PLL should be off before a set rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:14 +03:00
#define NONE -1
#define NO_IDX NONE
clk: stm32f4: Add lcd-tft clock This patch introduces lcd-tft clock for stm32f4 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:15 +03:00
#define NO_MUX NONE
#define NO_GATE NONE
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
struct stm32f4_gate_data {
u8 offset;
u8 bit_idx;
const char *name;
const char *parent_name;
unsigned long flags;
};
clk: stm32f469: Add QSPI clock This patch adds the QSPI clock for stm32f469 discovery board. The gate mapping is a little bit different from stm32f429 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:30 +03:00
static const struct stm32f4_gate_data stm32f429_gates[] __initconst = {
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
{ STM32F4_RCC_AHB1ENR, 0, "gpioa", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 1, "gpiob", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 2, "gpioc", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 3, "gpiod", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 4, "gpioe", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 5, "gpiof", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 6, "gpiog", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 7, "gpioh", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 8, "gpioi", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 9, "gpioj", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 10, "gpiok", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 12, "crc", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 18, "bkpsra", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 20, "ccmdatam", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 21, "dma1", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 22, "dma2", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 23, "dma2d", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 25, "ethmac", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 26, "ethmactx", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 27, "ethmacrx", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 28, "ethmacptp", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 29, "otghs", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 30, "otghsulpi", "ahb_div" },
{ STM32F4_RCC_AHB2ENR, 0, "dcmi", "ahb_div" },
{ STM32F4_RCC_AHB2ENR, 4, "cryp", "ahb_div" },
{ STM32F4_RCC_AHB2ENR, 5, "hash", "ahb_div" },
{ STM32F4_RCC_AHB2ENR, 6, "rng", "pll48" },
{ STM32F4_RCC_AHB2ENR, 7, "otgfs", "pll48" },
{ STM32F4_RCC_AHB3ENR, 0, "fmc", "ahb_div",
CLK_IGNORE_UNUSED },
{ STM32F4_RCC_APB1ENR, 0, "tim2", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 1, "tim3", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 2, "tim4", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 3, "tim5", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 4, "tim6", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 5, "tim7", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 6, "tim12", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 7, "tim13", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 8, "tim14", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 11, "wwdg", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 14, "spi2", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 15, "spi3", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 17, "uart2", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 18, "uart3", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 19, "uart4", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 20, "uart5", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 21, "i2c1", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 22, "i2c2", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 23, "i2c3", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 25, "can1", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 26, "can2", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 28, "pwr", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 29, "dac", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 30, "uart7", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 31, "uart8", "apb1_div" },
{ STM32F4_RCC_APB2ENR, 0, "tim1", "apb2_mul" },
{ STM32F4_RCC_APB2ENR, 1, "tim8", "apb2_mul" },
{ STM32F4_RCC_APB2ENR, 4, "usart1", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 5, "usart6", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 8, "adc1", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 9, "adc2", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 10, "adc3", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 11, "sdio", "pll48" },
{ STM32F4_RCC_APB2ENR, 12, "spi1", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 13, "spi4", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 14, "syscfg", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 16, "tim9", "apb2_mul" },
{ STM32F4_RCC_APB2ENR, 17, "tim10", "apb2_mul" },
{ STM32F4_RCC_APB2ENR, 18, "tim11", "apb2_mul" },
{ STM32F4_RCC_APB2ENR, 20, "spi5", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 21, "spi6", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 22, "sai1", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 26, "ltdc", "apb2_div" },
};
clk: stm32f469: Add QSPI clock This patch adds the QSPI clock for stm32f469 discovery board. The gate mapping is a little bit different from stm32f429 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:30 +03:00
static const struct stm32f4_gate_data stm32f469_gates[] __initconst = {
{ STM32F4_RCC_AHB1ENR, 0, "gpioa", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 1, "gpiob", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 2, "gpioc", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 3, "gpiod", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 4, "gpioe", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 5, "gpiof", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 6, "gpiog", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 7, "gpioh", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 8, "gpioi", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 9, "gpioj", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 10, "gpiok", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 12, "crc", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 18, "bkpsra", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 20, "ccmdatam", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 21, "dma1", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 22, "dma2", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 23, "dma2d", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 25, "ethmac", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 26, "ethmactx", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 27, "ethmacrx", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 28, "ethmacptp", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 29, "otghs", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 30, "otghsulpi", "ahb_div" },
{ STM32F4_RCC_AHB2ENR, 0, "dcmi", "ahb_div" },
{ STM32F4_RCC_AHB2ENR, 4, "cryp", "ahb_div" },
{ STM32F4_RCC_AHB2ENR, 5, "hash", "ahb_div" },
{ STM32F4_RCC_AHB2ENR, 6, "rng", "pll48" },
{ STM32F4_RCC_AHB2ENR, 7, "otgfs", "pll48" },
{ STM32F4_RCC_AHB3ENR, 0, "fmc", "ahb_div",
CLK_IGNORE_UNUSED },
{ STM32F4_RCC_AHB3ENR, 1, "qspi", "ahb_div",
CLK_IGNORE_UNUSED },
{ STM32F4_RCC_APB1ENR, 0, "tim2", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 1, "tim3", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 2, "tim4", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 3, "tim5", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 4, "tim6", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 5, "tim7", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 6, "tim12", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 7, "tim13", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 8, "tim14", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 11, "wwdg", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 14, "spi2", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 15, "spi3", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 17, "uart2", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 18, "uart3", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 19, "uart4", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 20, "uart5", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 21, "i2c1", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 22, "i2c2", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 23, "i2c3", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 25, "can1", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 26, "can2", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 28, "pwr", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 29, "dac", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 30, "uart7", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 31, "uart8", "apb1_div" },
{ STM32F4_RCC_APB2ENR, 0, "tim1", "apb2_mul" },
{ STM32F4_RCC_APB2ENR, 1, "tim8", "apb2_mul" },
{ STM32F4_RCC_APB2ENR, 4, "usart1", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 5, "usart6", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 8, "adc1", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 9, "adc2", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 10, "adc3", "apb2_div" },
clk: stm32f4: SDIO & 48Mhz clock management for STM32F469 board In the stm32f469 soc, the 48Mhz clock could be derived from pll-q or from pll-sai-p. The SDIO clock could be also derived from 48Mhz or from sys clock. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:18 +03:00
{ STM32F4_RCC_APB2ENR, 11, "sdio", "sdmux" },
clk: stm32f469: Add QSPI clock This patch adds the QSPI clock for stm32f469 discovery board. The gate mapping is a little bit different from stm32f429 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:30 +03:00
{ STM32F4_RCC_APB2ENR, 12, "spi1", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 13, "spi4", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 14, "syscfg", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 16, "tim9", "apb2_mul" },
{ STM32F4_RCC_APB2ENR, 17, "tim10", "apb2_mul" },
{ STM32F4_RCC_APB2ENR, 18, "tim11", "apb2_mul" },
{ STM32F4_RCC_APB2ENR, 20, "spi5", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 21, "spi6", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 22, "sai1", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 26, "ltdc", "apb2_div" },
};
clk: stm32f7: Introduce stm32f7 clocks for STM32F746 boards This patch enables clocks for STM32F746 boards. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-01-06 16:59:23 +03:00
static const struct stm32f4_gate_data stm32f746_gates[] __initconst = {
{ STM32F4_RCC_AHB1ENR, 0, "gpioa", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 1, "gpiob", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 2, "gpioc", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 3, "gpiod", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 4, "gpioe", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 5, "gpiof", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 6, "gpiog", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 7, "gpioh", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 8, "gpioi", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 9, "gpioj", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 10, "gpiok", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 12, "crc", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 18, "bkpsra", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 20, "dtcmram", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 21, "dma1", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 22, "dma2", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 23, "dma2d", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 25, "ethmac", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 26, "ethmactx", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 27, "ethmacrx", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 28, "ethmacptp", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 29, "otghs", "ahb_div" },
{ STM32F4_RCC_AHB1ENR, 30, "otghsulpi", "ahb_div" },
{ STM32F4_RCC_AHB2ENR, 0, "dcmi", "ahb_div" },
{ STM32F4_RCC_AHB2ENR, 4, "cryp", "ahb_div" },
{ STM32F4_RCC_AHB2ENR, 5, "hash", "ahb_div" },
{ STM32F4_RCC_AHB2ENR, 6, "rng", "pll48" },
{ STM32F4_RCC_AHB2ENR, 7, "otgfs", "pll48" },
{ STM32F4_RCC_AHB3ENR, 0, "fmc", "ahb_div",
CLK_IGNORE_UNUSED },
{ STM32F4_RCC_AHB3ENR, 1, "qspi", "ahb_div",
CLK_IGNORE_UNUSED },
{ STM32F4_RCC_APB1ENR, 0, "tim2", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 1, "tim3", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 2, "tim4", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 3, "tim5", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 4, "tim6", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 5, "tim7", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 6, "tim12", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 7, "tim13", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 8, "tim14", "apb1_mul" },
{ STM32F4_RCC_APB1ENR, 11, "wwdg", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 14, "spi2", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 15, "spi3", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 16, "spdifrx", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 25, "can1", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 26, "can2", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 27, "cec", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 28, "pwr", "apb1_div" },
{ STM32F4_RCC_APB1ENR, 29, "dac", "apb1_div" },
{ STM32F4_RCC_APB2ENR, 0, "tim1", "apb2_mul" },
{ STM32F4_RCC_APB2ENR, 1, "tim8", "apb2_mul" },
clk: stm32: Add clk entry for SDMMC2 on stm32F769 STM32F769 has 2 SDMMC port, add clock entry for the second one. Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com> Signed-off-by: Patrice Chotard <patrice.chotard@st.com> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-03-12 12:04:07 +03:00
{ STM32F4_RCC_APB2ENR, 7, "sdmmc2", "sdmux" },
clk: stm32f7: Introduce stm32f7 clocks for STM32F746 boards This patch enables clocks for STM32F746 boards. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-01-06 16:59:23 +03:00
{ STM32F4_RCC_APB2ENR, 8, "adc1", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 9, "adc2", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 10, "adc3", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 11, "sdmmc", "sdmux" },
{ STM32F4_RCC_APB2ENR, 12, "spi1", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 13, "spi4", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 14, "syscfg", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 16, "tim9", "apb2_mul" },
{ STM32F4_RCC_APB2ENR, 17, "tim10", "apb2_mul" },
{ STM32F4_RCC_APB2ENR, 18, "tim11", "apb2_mul" },
{ STM32F4_RCC_APB2ENR, 20, "spi5", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 21, "spi6", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 22, "sai1", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 23, "sai2", "apb2_div" },
{ STM32F4_RCC_APB2ENR, 26, "ltdc", "apb2_div" },
};
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
/*
* This bitmask tells us which bit offsets (0..192) on STM32F4[23]xxx
* have gate bits associated with them. Its combined hweight is 71.
*/
clk: stm32f469: Add QSPI clock This patch adds the QSPI clock for stm32f469 discovery board. The gate mapping is a little bit different from stm32f429 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:30 +03:00
#define MAX_GATE_MAP 3
static const u64 stm32f42xx_gate_map[MAX_GATE_MAP] = { 0x000000f17ef417ffull,
0x0000000000000001ull,
0x04777f33f6fec9ffull };
static const u64 stm32f46xx_gate_map[MAX_GATE_MAP] = { 0x000000f17ef417ffull,
0x0000000000000003ull,
0x0c777f33f6fec9ffull };
clk: stm32f7: Introduce stm32f7 clocks for STM32F746 boards This patch enables clocks for STM32F746 boards. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-01-06 16:59:23 +03:00
static const u64 stm32f746_gate_map[MAX_GATE_MAP] = { 0x000000f17ef417ffull,
0x0000000000000003ull,
clk: stm32: Add clk entry for SDMMC2 on stm32F769 STM32F769 has 2 SDMMC port, add clock entry for the second one. Signed-off-by: Alexandre TORGUE <alexandre.torgue@st.com> Signed-off-by: Patrice Chotard <patrice.chotard@st.com> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-03-12 12:04:07 +03:00
0x04f77f833e01c9ffull };
clk: stm32f7: Introduce stm32f7 clocks for STM32F746 boards This patch enables clocks for STM32F746 boards. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-01-06 16:59:23 +03:00
clk: stm32f469: Add QSPI clock This patch adds the QSPI clock for stm32f469 discovery board. The gate mapping is a little bit different from stm32f429 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:30 +03:00
static const u64 *stm32f4_gate_map;
static struct clk_hw **clks;
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
static DEFINE_SPINLOCK(stm32f4_clk_lock);
static void __iomem *base;
clk: stm32f4: Add LSI & LSE clocks This patch introduces the support of the LSI & LSE clocks. The clock drivers needs to disable the power domain write protection using syscon/regmap to enable these clocks. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:28 +03:00
static struct regmap *pdrm;
clk: stm32f7: Introduce stm32f7 clocks for STM32F746 boards This patch enables clocks for STM32F746 boards. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-01-06 16:59:23 +03:00
static int stm32fx_end_primary_clk;
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
/*
* "Multiplier" device for APBx clocks.
*
* The APBx dividers are power-of-two dividers and, if *not* running in 1:1
* mode, they also tap out the one of the low order state bits to run the
* timers. ST datasheets represent this feature as a (conditional) clock
* multiplier.
*/
struct clk_apb_mul {
struct clk_hw hw;
u8 bit_idx;
};
#define to_clk_apb_mul(_hw) container_of(_hw, struct clk_apb_mul, hw)
static unsigned long clk_apb_mul_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
struct clk_apb_mul *am = to_clk_apb_mul(hw);
if (readl(base + STM32F4_RCC_CFGR) & BIT(am->bit_idx))
return parent_rate * 2;
return parent_rate;
}
static long clk_apb_mul_round_rate(struct clk_hw *hw, unsigned long rate,
unsigned long *prate)
{
struct clk_apb_mul *am = to_clk_apb_mul(hw);
unsigned long mult = 1;
if (readl(base + STM32F4_RCC_CFGR) & BIT(am->bit_idx))
mult = 2;
clk: Convert __clk_get_flags() to clk_hw_get_flags() Mostly converted with the following snippet: @@ struct clk_hw *E; @@ -__clk_get_flags(E->clk) +clk_hw_get_flags(E) Acked-by: Tero Kristo <t-kristo@ti.com> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Max Filippov <jcmvbkbc@gmail.com> Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Cc: Daniel Thompson <daniel.thompson@linaro.org> Cc: Coquelin <mcoquelin.stm32@gmail.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-30 02:56:30 +03:00
if (clk_hw_get_flags(hw) & CLK_SET_RATE_PARENT) {
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
unsigned long best_parent = rate / mult;
clk: stm32f4: Convert to clk_hw based provider APIs We're removing struct clk from the clk provider API, so switch this code to using the clk_hw based provider APIs. Cc: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-07-31 03:20:57 +03:00
*prate = clk_hw_round_rate(clk_hw_get_parent(hw), best_parent);
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
}
return *prate * mult;
}
static int clk_apb_mul_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
/*
* We must report success but we can do so unconditionally because
* clk_apb_mul_round_rate returns values that ensure this call is a
* nop.
*/
return 0;
}
static const struct clk_ops clk_apb_mul_factor_ops = {
.round_rate = clk_apb_mul_round_rate,
.set_rate = clk_apb_mul_set_rate,
.recalc_rate = clk_apb_mul_recalc_rate,
};
static struct clk *clk_register_apb_mul(struct device *dev, const char *name,
const char *parent_name,
unsigned long flags, u8 bit_idx)
{
struct clk_apb_mul *am;
struct clk_init_data init;
struct clk *clk;
am = kzalloc(sizeof(*am), GFP_KERNEL);
if (!am)
return ERR_PTR(-ENOMEM);
am->bit_idx = bit_idx;
am->hw.init = &init;
init.name = name;
init.ops = &clk_apb_mul_factor_ops;
init.flags = flags;
init.parent_names = &parent_name;
init.num_parents = 1;
clk = clk_register(dev, &am->hw);
if (IS_ERR(clk))
kfree(am);
return clk;
}
clk: stm32f4: Add PLL_I2S & PLL_SAI for STM32F429/469 boards This patch introduces PLL_I2S and PLL_SAI. Vco clock of these PLLs can be modify by DT (only n multiplicator, m divider is still fixed by the boot-loader). Each PLL has 3 dividers. PLL should be off when we modify the rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> [sboyd@codeaurora.org: Mark stm32f4_pll_div_ops static] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:13 +03:00
enum {
PLL,
PLL_I2S,
PLL_SAI,
};
static const struct clk_div_table pll_divp_table[] = {
{ 0, 2 }, { 1, 4 }, { 2, 6 }, { 3, 8 }, { 0 }
};
clk: stm32f4: fix: exclude values 0 and 1 for PLLQ 0000: PLLQ = 0, wrong configuration 0001: PLLQ = 1, wrong configuration ... 0010: PLLQ = 2 0011: PLLQ = 3 0100: PLLQ = 4 ... 1111: PLLQ = 1 Use divider table to exclude 0 and 1 values. Fixes: 83135ad3c517 ("clk: stm32f4: Add PLL_I2S & PLL_SAI for STM32F429/469 boards") Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Michael Turquette <mturquette@baylibre.com>
2017-03-16 11:16:40 +03:00
static const struct clk_div_table pll_divq_table[] = {
{ 2, 2 }, { 3, 3 }, { 4, 4 }, { 5, 5 }, { 6, 6 }, { 7, 7 },
{ 8, 8 }, { 9, 9 }, { 10, 10 }, { 11, 11 }, { 12, 12 }, { 13, 13 },
{ 14, 14 }, { 15, 15 },
{ 0 }
};
clk: stm32f4: Add PLL_I2S & PLL_SAI for STM32F429/469 boards This patch introduces PLL_I2S and PLL_SAI. Vco clock of these PLLs can be modify by DT (only n multiplicator, m divider is still fixed by the boot-loader). Each PLL has 3 dividers. PLL should be off when we modify the rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> [sboyd@codeaurora.org: Mark stm32f4_pll_div_ops static] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:13 +03:00
static const struct clk_div_table pll_divr_table[] = {
{ 2, 2 }, { 3, 3 }, { 4, 4 }, { 5, 5 }, { 6, 6 }, { 7, 7 }, { 0 }
};
struct stm32f4_pll {
spinlock_t *lock;
struct clk_gate gate;
u8 offset;
u8 bit_rdy_idx;
u8 status;
u8 n_start;
};
#define to_stm32f4_pll(_gate) container_of(_gate, struct stm32f4_pll, gate)
clk: stm32f4: Add post divisor for I2S & SAI PLLs This patch adds post dividers of I2S & SAI PLLs. These dividers are managed by a dedicated register (RCC_DCKCFGR). The PLL should be off before a set rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:14 +03:00
struct stm32f4_pll_post_div_data {
int idx;
u8 pll_num;
const char *name;
const char *parent;
u8 flag;
u8 offset;
u8 shift;
u8 width;
u8 flag_div;
const struct clk_div_table *div_table;
};
clk: stm32f4: Add PLL_I2S & PLL_SAI for STM32F429/469 boards This patch introduces PLL_I2S and PLL_SAI. Vco clock of these PLLs can be modify by DT (only n multiplicator, m divider is still fixed by the boot-loader). Each PLL has 3 dividers. PLL should be off when we modify the rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> [sboyd@codeaurora.org: Mark stm32f4_pll_div_ops static] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:13 +03:00
struct stm32f4_vco_data {
const char *vco_name;
u8 offset;
u8 bit_idx;
u8 bit_rdy_idx;
};
static const struct stm32f4_vco_data vco_data[] = {
{ "vco", STM32F4_RCC_PLLCFGR, 24, 25 },
{ "vco-i2s", STM32F4_RCC_PLLI2SCFGR, 26, 27 },
{ "vco-sai", STM32F4_RCC_PLLSAICFGR, 28, 29 },
};
clk: stm32f4: Add post divisor for I2S & SAI PLLs This patch adds post dividers of I2S & SAI PLLs. These dividers are managed by a dedicated register (RCC_DCKCFGR). The PLL should be off before a set rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:14 +03:00
static const struct clk_div_table post_divr_table[] = {
{ 0, 2 }, { 1, 4 }, { 2, 8 }, { 3, 16 }, { 0 }
};
#define MAX_POST_DIV 3
static const struct stm32f4_pll_post_div_data post_div_data[MAX_POST_DIV] = {
{ CLK_I2SQ_PDIV, PLL_I2S, "plli2s-q-div", "plli2s-q",
CLK_SET_RATE_PARENT, STM32F4_RCC_DCKCFGR, 0, 5, 0, NULL},
{ CLK_SAIQ_PDIV, PLL_SAI, "pllsai-q-div", "pllsai-q",
CLK_SET_RATE_PARENT, STM32F4_RCC_DCKCFGR, 8, 5, 0, NULL },
{ NO_IDX, PLL_SAI, "pllsai-r-div", "pllsai-r", CLK_SET_RATE_PARENT,
STM32F4_RCC_DCKCFGR, 16, 2, 0, post_divr_table },
};
clk: stm32f4: Add PLL_I2S & PLL_SAI for STM32F429/469 boards This patch introduces PLL_I2S and PLL_SAI. Vco clock of these PLLs can be modify by DT (only n multiplicator, m divider is still fixed by the boot-loader). Each PLL has 3 dividers. PLL should be off when we modify the rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> [sboyd@codeaurora.org: Mark stm32f4_pll_div_ops static] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:13 +03:00
struct stm32f4_div_data {
u8 shift;
u8 width;
u8 flag_div;
const struct clk_div_table *div_table;
};
#define MAX_PLL_DIV 3
static const struct stm32f4_div_data div_data[MAX_PLL_DIV] = {
clk: stm32f4: fix: exclude values 0 and 1 for PLLQ 0000: PLLQ = 0, wrong configuration 0001: PLLQ = 1, wrong configuration ... 0010: PLLQ = 2 0011: PLLQ = 3 0100: PLLQ = 4 ... 1111: PLLQ = 1 Use divider table to exclude 0 and 1 values. Fixes: 83135ad3c517 ("clk: stm32f4: Add PLL_I2S & PLL_SAI for STM32F429/469 boards") Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Michael Turquette <mturquette@baylibre.com>
2017-03-16 11:16:40 +03:00
{ 16, 2, 0, pll_divp_table },
{ 24, 4, 0, pll_divq_table },
{ 28, 3, 0, pll_divr_table },
clk: stm32f4: Add PLL_I2S & PLL_SAI for STM32F429/469 boards This patch introduces PLL_I2S and PLL_SAI. Vco clock of these PLLs can be modify by DT (only n multiplicator, m divider is still fixed by the boot-loader). Each PLL has 3 dividers. PLL should be off when we modify the rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> [sboyd@codeaurora.org: Mark stm32f4_pll_div_ops static] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:13 +03:00
};
struct stm32f4_pll_data {
u8 pll_num;
u8 n_start;
const char *div_name[MAX_PLL_DIV];
};
static const struct stm32f4_pll_data stm32f429_pll[MAX_PLL_DIV] = {
{ PLL, 192, { "pll", "pll48", NULL } },
{ PLL_I2S, 192, { NULL, "plli2s-q", "plli2s-r" } },
{ PLL_SAI, 49, { NULL, "pllsai-q", "pllsai-r" } },
};
static const struct stm32f4_pll_data stm32f469_pll[MAX_PLL_DIV] = {
clk: stm32: Add DSI clock for STM32F469 Board This patch adds DSI clock for STM32F469 board Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-03-09 09:57:31 +03:00
{ PLL, 50, { "pll", "pll-q", "pll-r" } },
clk: stm32f4: Add PLL_I2S & PLL_SAI for STM32F429/469 boards This patch introduces PLL_I2S and PLL_SAI. Vco clock of these PLLs can be modify by DT (only n multiplicator, m divider is still fixed by the boot-loader). Each PLL has 3 dividers. PLL should be off when we modify the rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> [sboyd@codeaurora.org: Mark stm32f4_pll_div_ops static] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:13 +03:00
{ PLL_I2S, 50, { "plli2s-p", "plli2s-q", "plli2s-r" } },
{ PLL_SAI, 50, { "pllsai-p", "pllsai-q", "pllsai-r" } },
};
static int stm32f4_pll_is_enabled(struct clk_hw *hw)
{
return clk_gate_ops.is_enabled(hw);
}
clk: stm32f4: fix timeout management for pll and ready gate Use a classic polling to test bit ready. And the shift of the bit ready of LSE & LSI were wrongs. Fixes: 861adc44d290 ("clk: stm32f4: Add LSI & LSE clocks") Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Michael Turquette <mturquette@baylibre.com>
2017-03-16 11:16:41 +03:00
#define PLL_TIMEOUT 10000
clk: stm32f4: Add PLL_I2S & PLL_SAI for STM32F429/469 boards This patch introduces PLL_I2S and PLL_SAI. Vco clock of these PLLs can be modify by DT (only n multiplicator, m divider is still fixed by the boot-loader). Each PLL has 3 dividers. PLL should be off when we modify the rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> [sboyd@codeaurora.org: Mark stm32f4_pll_div_ops static] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:13 +03:00
static int stm32f4_pll_enable(struct clk_hw *hw)
{
struct clk_gate *gate = to_clk_gate(hw);
struct stm32f4_pll *pll = to_stm32f4_pll(gate);
clk: stm32f4: fix timeout management for pll and ready gate Use a classic polling to test bit ready. And the shift of the bit ready of LSE & LSI were wrongs. Fixes: 861adc44d290 ("clk: stm32f4: Add LSI & LSE clocks") Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Michael Turquette <mturquette@baylibre.com>
2017-03-16 11:16:41 +03:00
int bit_status;
unsigned int timeout = PLL_TIMEOUT;
clk: stm32f4: Add PLL_I2S & PLL_SAI for STM32F429/469 boards This patch introduces PLL_I2S and PLL_SAI. Vco clock of these PLLs can be modify by DT (only n multiplicator, m divider is still fixed by the boot-loader). Each PLL has 3 dividers. PLL should be off when we modify the rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> [sboyd@codeaurora.org: Mark stm32f4_pll_div_ops static] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:13 +03:00
clk: stm32f4: fix timeout management for pll and ready gate Use a classic polling to test bit ready. And the shift of the bit ready of LSE & LSI were wrongs. Fixes: 861adc44d290 ("clk: stm32f4: Add LSI & LSE clocks") Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Michael Turquette <mturquette@baylibre.com>
2017-03-16 11:16:41 +03:00
if (clk_gate_ops.is_enabled(hw))
return 0;
clk_gate_ops.enable(hw);
clk: stm32f4: Add PLL_I2S & PLL_SAI for STM32F429/469 boards This patch introduces PLL_I2S and PLL_SAI. Vco clock of these PLLs can be modify by DT (only n multiplicator, m divider is still fixed by the boot-loader). Each PLL has 3 dividers. PLL should be off when we modify the rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> [sboyd@codeaurora.org: Mark stm32f4_pll_div_ops static] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:13 +03:00
clk: stm32f4: fix timeout management for pll and ready gate Use a classic polling to test bit ready. And the shift of the bit ready of LSE & LSI were wrongs. Fixes: 861adc44d290 ("clk: stm32f4: Add LSI & LSE clocks") Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Michael Turquette <mturquette@baylibre.com>
2017-03-16 11:16:41 +03:00
do {
bit_status = !(readl(gate->reg) & BIT(pll->bit_rdy_idx));
clk: stm32f4: Add PLL_I2S & PLL_SAI for STM32F429/469 boards This patch introduces PLL_I2S and PLL_SAI. Vco clock of these PLLs can be modify by DT (only n multiplicator, m divider is still fixed by the boot-loader). Each PLL has 3 dividers. PLL should be off when we modify the rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> [sboyd@codeaurora.org: Mark stm32f4_pll_div_ops static] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:13 +03:00
clk: stm32f4: fix timeout management for pll and ready gate Use a classic polling to test bit ready. And the shift of the bit ready of LSE & LSI were wrongs. Fixes: 861adc44d290 ("clk: stm32f4: Add LSI & LSE clocks") Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Michael Turquette <mturquette@baylibre.com>
2017-03-16 11:16:41 +03:00
} while (bit_status && --timeout);
return bit_status;
clk: stm32f4: Add PLL_I2S & PLL_SAI for STM32F429/469 boards This patch introduces PLL_I2S and PLL_SAI. Vco clock of these PLLs can be modify by DT (only n multiplicator, m divider is still fixed by the boot-loader). Each PLL has 3 dividers. PLL should be off when we modify the rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> [sboyd@codeaurora.org: Mark stm32f4_pll_div_ops static] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:13 +03:00
}
static void stm32f4_pll_disable(struct clk_hw *hw)
{
clk_gate_ops.disable(hw);
}
static unsigned long stm32f4_pll_recalc(struct clk_hw *hw,
unsigned long parent_rate)
{
struct clk_gate *gate = to_clk_gate(hw);
struct stm32f4_pll *pll = to_stm32f4_pll(gate);
unsigned long n;
n = (readl(base + pll->offset) >> 6) & 0x1ff;
return parent_rate * n;
}
static long stm32f4_pll_round_rate(struct clk_hw *hw, unsigned long rate,
unsigned long *prate)
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
{
clk: stm32f4: Add PLL_I2S & PLL_SAI for STM32F429/469 boards This patch introduces PLL_I2S and PLL_SAI. Vco clock of these PLLs can be modify by DT (only n multiplicator, m divider is still fixed by the boot-loader). Each PLL has 3 dividers. PLL should be off when we modify the rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> [sboyd@codeaurora.org: Mark stm32f4_pll_div_ops static] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:13 +03:00
struct clk_gate *gate = to_clk_gate(hw);
struct stm32f4_pll *pll = to_stm32f4_pll(gate);
unsigned long n;
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
clk: stm32f4: Add PLL_I2S & PLL_SAI for STM32F429/469 boards This patch introduces PLL_I2S and PLL_SAI. Vco clock of these PLLs can be modify by DT (only n multiplicator, m divider is still fixed by the boot-loader). Each PLL has 3 dividers. PLL should be off when we modify the rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> [sboyd@codeaurora.org: Mark stm32f4_pll_div_ops static] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:13 +03:00
n = rate / *prate;
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
clk: stm32f4: Add PLL_I2S & PLL_SAI for STM32F429/469 boards This patch introduces PLL_I2S and PLL_SAI. Vco clock of these PLLs can be modify by DT (only n multiplicator, m divider is still fixed by the boot-loader). Each PLL has 3 dividers. PLL should be off when we modify the rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> [sboyd@codeaurora.org: Mark stm32f4_pll_div_ops static] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:13 +03:00
if (n < pll->n_start)
n = pll->n_start;
else if (n > 432)
n = 432;
return *prate * n;
}
static int stm32f4_pll_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
{
struct clk_gate *gate = to_clk_gate(hw);
struct stm32f4_pll *pll = to_stm32f4_pll(gate);
unsigned long n;
unsigned long val;
int pll_state;
pll_state = stm32f4_pll_is_enabled(hw);
if (pll_state)
stm32f4_pll_disable(hw);
n = rate / parent_rate;
val = readl(base + pll->offset) & ~(0x1ff << 6);
writel(val | ((n & 0x1ff) << 6), base + pll->offset);
if (pll_state)
stm32f4_pll_enable(hw);
return 0;
}
static const struct clk_ops stm32f4_pll_gate_ops = {
.enable = stm32f4_pll_enable,
.disable = stm32f4_pll_disable,
.is_enabled = stm32f4_pll_is_enabled,
.recalc_rate = stm32f4_pll_recalc,
.round_rate = stm32f4_pll_round_rate,
.set_rate = stm32f4_pll_set_rate,
};
struct stm32f4_pll_div {
struct clk_divider div;
struct clk_hw *hw_pll;
};
#define to_pll_div_clk(_div) container_of(_div, struct stm32f4_pll_div, div)
static unsigned long stm32f4_pll_div_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
return clk_divider_ops.recalc_rate(hw, parent_rate);
}
static long stm32f4_pll_div_round_rate(struct clk_hw *hw, unsigned long rate,
unsigned long *prate)
{
return clk_divider_ops.round_rate(hw, rate, prate);
}
static int stm32f4_pll_div_set_rate(struct clk_hw *hw, unsigned long rate,
unsigned long parent_rate)
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
{
clk: stm32f4: Add PLL_I2S & PLL_SAI for STM32F429/469 boards This patch introduces PLL_I2S and PLL_SAI. Vco clock of these PLLs can be modify by DT (only n multiplicator, m divider is still fixed by the boot-loader). Each PLL has 3 dividers. PLL should be off when we modify the rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> [sboyd@codeaurora.org: Mark stm32f4_pll_div_ops static] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:13 +03:00
int pll_state, ret;
struct clk_divider *div = to_clk_divider(hw);
struct stm32f4_pll_div *pll_div = to_pll_div_clk(div);
pll_state = stm32f4_pll_is_enabled(pll_div->hw_pll);
if (pll_state)
stm32f4_pll_disable(pll_div->hw_pll);
ret = clk_divider_ops.set_rate(hw, rate, parent_rate);
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
clk: stm32f4: Add PLL_I2S & PLL_SAI for STM32F429/469 boards This patch introduces PLL_I2S and PLL_SAI. Vco clock of these PLLs can be modify by DT (only n multiplicator, m divider is still fixed by the boot-loader). Each PLL has 3 dividers. PLL should be off when we modify the rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> [sboyd@codeaurora.org: Mark stm32f4_pll_div_ops static] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:13 +03:00
if (pll_state)
stm32f4_pll_enable(pll_div->hw_pll);
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
clk: stm32f4: Add PLL_I2S & PLL_SAI for STM32F429/469 boards This patch introduces PLL_I2S and PLL_SAI. Vco clock of these PLLs can be modify by DT (only n multiplicator, m divider is still fixed by the boot-loader). Each PLL has 3 dividers. PLL should be off when we modify the rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> [sboyd@codeaurora.org: Mark stm32f4_pll_div_ops static] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:13 +03:00
return ret;
}
static const struct clk_ops stm32f4_pll_div_ops = {
.recalc_rate = stm32f4_pll_div_recalc_rate,
.round_rate = stm32f4_pll_div_round_rate,
.set_rate = stm32f4_pll_div_set_rate,
};
static struct clk_hw *clk_register_pll_div(const char *name,
const char *parent_name, unsigned long flags,
void __iomem *reg, u8 shift, u8 width,
u8 clk_divider_flags, const struct clk_div_table *table,
struct clk_hw *pll_hw, spinlock_t *lock)
{
struct stm32f4_pll_div *pll_div;
struct clk_hw *hw;
struct clk_init_data init;
int ret;
/* allocate the divider */
pll_div = kzalloc(sizeof(*pll_div), GFP_KERNEL);
if (!pll_div)
return ERR_PTR(-ENOMEM);
init.name = name;
init.ops = &stm32f4_pll_div_ops;
init.flags = flags;
init.parent_names = (parent_name ? &parent_name : NULL);
init.num_parents = (parent_name ? 1 : 0);
/* struct clk_divider assignments */
pll_div->div.reg = reg;
pll_div->div.shift = shift;
pll_div->div.width = width;
pll_div->div.flags = clk_divider_flags;
pll_div->div.lock = lock;
pll_div->div.table = table;
pll_div->div.hw.init = &init;
pll_div->hw_pll = pll_hw;
/* register the clock */
hw = &pll_div->div.hw;
ret = clk_hw_register(NULL, hw);
if (ret) {
kfree(pll_div);
hw = ERR_PTR(ret);
}
return hw;
}
static struct clk_hw *stm32f4_rcc_register_pll(const char *pllsrc,
const struct stm32f4_pll_data *data, spinlock_t *lock)
{
struct stm32f4_pll *pll;
struct clk_init_data init = { NULL };
void __iomem *reg;
struct clk_hw *pll_hw;
int ret;
int i;
const struct stm32f4_vco_data *vco;
pll = kzalloc(sizeof(*pll), GFP_KERNEL);
if (!pll)
return ERR_PTR(-ENOMEM);
vco = &vco_data[data->pll_num];
init.name = vco->vco_name;
init.ops = &stm32f4_pll_gate_ops;
init.flags = CLK_SET_RATE_GATE;
init.parent_names = &pllsrc;
init.num_parents = 1;
pll->gate.lock = lock;
pll->gate.reg = base + STM32F4_RCC_CR;
pll->gate.bit_idx = vco->bit_idx;
pll->gate.hw.init = &init;
pll->offset = vco->offset;
pll->n_start = data->n_start;
pll->bit_rdy_idx = vco->bit_rdy_idx;
pll->status = (readl(base + STM32F4_RCC_CR) >> vco->bit_idx) & 0x1;
reg = base + pll->offset;
pll_hw = &pll->gate.hw;
ret = clk_hw_register(NULL, pll_hw);
if (ret) {
kfree(pll);
return ERR_PTR(ret);
}
for (i = 0; i < MAX_PLL_DIV; i++)
if (data->div_name[i])
clk_register_pll_div(data->div_name[i],
vco->vco_name,
0,
reg,
div_data[i].shift,
div_data[i].width,
div_data[i].flag_div,
div_data[i].div_table,
pll_hw,
lock);
return pll_hw;
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
}
/*
* Converts the primary and secondary indices (as they appear in DT) to an
* offset into our struct clock array.
*/
static int stm32f4_rcc_lookup_clk_idx(u8 primary, u8 secondary)
{
clk: stm32f469: Add QSPI clock This patch adds the QSPI clock for stm32f469 discovery board. The gate mapping is a little bit different from stm32f429 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:30 +03:00
u64 table[MAX_GATE_MAP];
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
if (primary == 1) {
clk: stm32f7: Introduce stm32f7 clocks for STM32F746 boards This patch enables clocks for STM32F746 boards. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-01-06 16:59:23 +03:00
if (WARN_ON(secondary >= stm32fx_end_primary_clk))
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
return -EINVAL;
return secondary;
}
clk: stm32f469: Add QSPI clock This patch adds the QSPI clock for stm32f469 discovery board. The gate mapping is a little bit different from stm32f429 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:30 +03:00
memcpy(table, stm32f4_gate_map, sizeof(table));
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
/* only bits set in table can be used as indices */
clk: stm32: Fix out-by-one error path in the index lookup If stm32f4_rcc_lookup() is called with primary == 0 and secondary == 192 then it will read beyond the end of the table array due to an out-by-one error in the range check. In addition to the fixing the inequality we also modify the r.h.s. to make it even more explicit that we are comparing against the size of table in bits. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Acked-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> Fixes: 358bdf892f6b ("clk: stm32: Add clock driver for STM32F4[23]xxx devices") Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-28 12:55:32 +03:00
if (WARN_ON(secondary >= BITS_PER_BYTE * sizeof(table) ||
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
0 == (table[BIT_ULL_WORD(secondary)] &
BIT_ULL_MASK(secondary))))
return -EINVAL;
/* mask out bits above our current index */
table[BIT_ULL_WORD(secondary)] &=
GENMASK_ULL(secondary % BITS_PER_LONG_LONG, 0);
clk: stm32f7: Introduce stm32f7 clocks for STM32F746 boards This patch enables clocks for STM32F746 boards. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-01-06 16:59:23 +03:00
return stm32fx_end_primary_clk - 1 + hweight64(table[0]) +
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
(BIT_ULL_WORD(secondary) >= 1 ? hweight64(table[1]) : 0) +
(BIT_ULL_WORD(secondary) >= 2 ? hweight64(table[2]) : 0);
}
clk: stm32f4: Migrate to clk_hw based OF and registration APIs Now that we have clk_hw based provider APIs to register clks, we can get rid of struct clk pointers while registering clks in these drivers, allowing us to move closer to a clear split of consumer and provider clk APIs. Cc: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-06-02 02:15:29 +03:00
static struct clk_hw *
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
stm32f4_rcc_lookup_clk(struct of_phandle_args *clkspec, void *data)
{
int i = stm32f4_rcc_lookup_clk_idx(clkspec->args[0], clkspec->args[1]);
if (i < 0)
return ERR_PTR(-EINVAL);
return clks[i];
}
clk: stm32f4: Add LSI & LSE clocks This patch introduces the support of the LSI & LSE clocks. The clock drivers needs to disable the power domain write protection using syscon/regmap to enable these clocks. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:28 +03:00
#define to_rgclk(_rgate) container_of(_rgate, struct stm32_rgate, gate)
static inline void disable_power_domain_write_protection(void)
{
if (pdrm)
regmap_update_bits(pdrm, 0x00, (1 << 8), (1 << 8));
}
static inline void enable_power_domain_write_protection(void)
{
if (pdrm)
regmap_update_bits(pdrm, 0x00, (1 << 8), (0 << 8));
}
clk: stm32f4: Add RTC clock This patch introduces the support of the RTC clock. RTC clock can have 3 sources: lsi, lse and hse_rtc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:29 +03:00
static inline void sofware_reset_backup_domain(void)
{
unsigned long val;
val = readl(base + STM32F4_RCC_BDCR);
writel(val | BIT(16), base + STM32F4_RCC_BDCR);
writel(val & ~BIT(16), base + STM32F4_RCC_BDCR);
}
clk: stm32f4: Add LSI & LSE clocks This patch introduces the support of the LSI & LSE clocks. The clock drivers needs to disable the power domain write protection using syscon/regmap to enable these clocks. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:28 +03:00
struct stm32_rgate {
struct clk_gate gate;
u8 bit_rdy_idx;
};
clk: stm32f4: fix timeout management for pll and ready gate Use a classic polling to test bit ready. And the shift of the bit ready of LSE & LSI were wrongs. Fixes: 861adc44d290 ("clk: stm32f4: Add LSI & LSE clocks") Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Michael Turquette <mturquette@baylibre.com>
2017-03-16 11:16:41 +03:00
#define RGATE_TIMEOUT 50000
clk: stm32f4: Add LSI & LSE clocks This patch introduces the support of the LSI & LSE clocks. The clock drivers needs to disable the power domain write protection using syscon/regmap to enable these clocks. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:28 +03:00
static int rgclk_enable(struct clk_hw *hw)
{
struct clk_gate *gate = to_clk_gate(hw);
struct stm32_rgate *rgate = to_rgclk(gate);
clk: stm32f4: fix timeout management for pll and ready gate Use a classic polling to test bit ready. And the shift of the bit ready of LSE & LSI were wrongs. Fixes: 861adc44d290 ("clk: stm32f4: Add LSI & LSE clocks") Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Michael Turquette <mturquette@baylibre.com>
2017-03-16 11:16:41 +03:00
int bit_status;
unsigned int timeout = RGATE_TIMEOUT;
if (clk_gate_ops.is_enabled(hw))
return 0;
clk: stm32f4: Add LSI & LSE clocks This patch introduces the support of the LSI & LSE clocks. The clock drivers needs to disable the power domain write protection using syscon/regmap to enable these clocks. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:28 +03:00
disable_power_domain_write_protection();
clk_gate_ops.enable(hw);
clk: stm32f4: fix timeout management for pll and ready gate Use a classic polling to test bit ready. And the shift of the bit ready of LSE & LSI were wrongs. Fixes: 861adc44d290 ("clk: stm32f4: Add LSI & LSE clocks") Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Michael Turquette <mturquette@baylibre.com>
2017-03-16 11:16:41 +03:00
do {
bit_status = !(readl(gate->reg) & BIT(rgate->bit_rdy_idx));
if (bit_status)
udelay(100);
} while (bit_status && --timeout);
clk: stm32f4: Add LSI & LSE clocks This patch introduces the support of the LSI & LSE clocks. The clock drivers needs to disable the power domain write protection using syscon/regmap to enable these clocks. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:28 +03:00
enable_power_domain_write_protection();
clk: stm32f4: fix timeout management for pll and ready gate Use a classic polling to test bit ready. And the shift of the bit ready of LSE & LSI were wrongs. Fixes: 861adc44d290 ("clk: stm32f4: Add LSI & LSE clocks") Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Michael Turquette <mturquette@baylibre.com>
2017-03-16 11:16:41 +03:00
return bit_status;
clk: stm32f4: Add LSI & LSE clocks This patch introduces the support of the LSI & LSE clocks. The clock drivers needs to disable the power domain write protection using syscon/regmap to enable these clocks. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:28 +03:00
}
static void rgclk_disable(struct clk_hw *hw)
{
clk_gate_ops.disable(hw);
}
static int rgclk_is_enabled(struct clk_hw *hw)
{
return clk_gate_ops.is_enabled(hw);
}
static const struct clk_ops rgclk_ops = {
.enable = rgclk_enable,
.disable = rgclk_disable,
.is_enabled = rgclk_is_enabled,
};
static struct clk_hw *clk_register_rgate(struct device *dev, const char *name,
const char *parent_name, unsigned long flags,
void __iomem *reg, u8 bit_idx, u8 bit_rdy_idx,
u8 clk_gate_flags, spinlock_t *lock)
{
struct stm32_rgate *rgate;
struct clk_init_data init = { NULL };
struct clk_hw *hw;
int ret;
rgate = kzalloc(sizeof(*rgate), GFP_KERNEL);
if (!rgate)
return ERR_PTR(-ENOMEM);
init.name = name;
init.ops = &rgclk_ops;
init.flags = flags;
init.parent_names = &parent_name;
init.num_parents = 1;
rgate->bit_rdy_idx = bit_rdy_idx;
rgate->gate.lock = lock;
rgate->gate.reg = reg;
rgate->gate.bit_idx = bit_idx;
rgate->gate.hw.init = &init;
hw = &rgate->gate.hw;
ret = clk_hw_register(dev, hw);
if (ret) {
kfree(rgate);
hw = ERR_PTR(ret);
}
return hw;
}
clk: stm32f4: Add RTC clock This patch introduces the support of the RTC clock. RTC clock can have 3 sources: lsi, lse and hse_rtc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:29 +03:00
static int cclk_gate_enable(struct clk_hw *hw)
{
int ret;
disable_power_domain_write_protection();
ret = clk_gate_ops.enable(hw);
enable_power_domain_write_protection();
return ret;
}
static void cclk_gate_disable(struct clk_hw *hw)
{
disable_power_domain_write_protection();
clk_gate_ops.disable(hw);
enable_power_domain_write_protection();
}
static int cclk_gate_is_enabled(struct clk_hw *hw)
{
return clk_gate_ops.is_enabled(hw);
}
static const struct clk_ops cclk_gate_ops = {
.enable = cclk_gate_enable,
.disable = cclk_gate_disable,
.is_enabled = cclk_gate_is_enabled,
};
static u8 cclk_mux_get_parent(struct clk_hw *hw)
{
return clk_mux_ops.get_parent(hw);
}
static int cclk_mux_set_parent(struct clk_hw *hw, u8 index)
{
int ret;
disable_power_domain_write_protection();
sofware_reset_backup_domain();
ret = clk_mux_ops.set_parent(hw, index);
enable_power_domain_write_protection();
return ret;
}
static const struct clk_ops cclk_mux_ops = {
.get_parent = cclk_mux_get_parent,
.set_parent = cclk_mux_set_parent,
};
static struct clk_hw *stm32_register_cclk(struct device *dev, const char *name,
const char * const *parent_names, int num_parents,
void __iomem *reg, u8 bit_idx, u8 shift, unsigned long flags,
spinlock_t *lock)
{
struct clk_hw *hw;
struct clk_gate *gate;
struct clk_mux *mux;
gate = kzalloc(sizeof(*gate), GFP_KERNEL);
if (!gate) {
hw = ERR_PTR(-EINVAL);
goto fail;
}
mux = kzalloc(sizeof(*mux), GFP_KERNEL);
if (!mux) {
kfree(gate);
hw = ERR_PTR(-EINVAL);
goto fail;
}
gate->reg = reg;
gate->bit_idx = bit_idx;
gate->flags = 0;
gate->lock = lock;
mux->reg = reg;
mux->shift = shift;
mux->mask = 3;
mux->flags = 0;
hw = clk_hw_register_composite(dev, name, parent_names, num_parents,
&mux->hw, &cclk_mux_ops,
NULL, NULL,
&gate->hw, &cclk_gate_ops,
flags);
if (IS_ERR(hw)) {
kfree(gate);
kfree(mux);
}
fail:
return hw;
}
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
static const char *sys_parents[] __initdata = { "hsi", NULL, "pll" };
static const struct clk_div_table ahb_div_table[] = {
{ 0x0, 1 }, { 0x1, 1 }, { 0x2, 1 }, { 0x3, 1 },
{ 0x4, 1 }, { 0x5, 1 }, { 0x6, 1 }, { 0x7, 1 },
{ 0x8, 2 }, { 0x9, 4 }, { 0xa, 8 }, { 0xb, 16 },
{ 0xc, 64 }, { 0xd, 128 }, { 0xe, 256 }, { 0xf, 512 },
{ 0 },
};
static const struct clk_div_table apb_div_table[] = {
{ 0, 1 }, { 0, 1 }, { 0, 1 }, { 0, 1 },
{ 4, 2 }, { 5, 4 }, { 6, 8 }, { 7, 16 },
{ 0 },
};
clk: stm32f4: Add RTC clock This patch introduces the support of the RTC clock. RTC clock can have 3 sources: lsi, lse and hse_rtc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:29 +03:00
static const char *rtc_parents[4] = {
"no-clock", "lse", "lsi", "hse-rtc"
};
clk: stm32: Add DSI clock for STM32F469 Board This patch adds DSI clock for STM32F469 board Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-03-09 09:57:31 +03:00
static const char *dsi_parent[2] = { NULL, "pll-r" };
clk: stm32f4: Add lcd-tft clock This patch introduces lcd-tft clock for stm32f4 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:15 +03:00
static const char *lcd_parent[1] = { "pllsai-r-div" };
clk: stm32f4: Add I2S clock This patch introduces I2S clock for stm32f4 soc. The I2S clock could be derived from an external clock or from pll-i2s Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:16 +03:00
static const char *i2s_parents[2] = { "plli2s-r", NULL };
clk: stm32f4: Add SAI clocks This patch introduces SAI clocks for stm32f4 socs. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:17 +03:00
static const char *sai_parents[4] = { "pllsai-q-div", "plli2s-q-div", NULL,
"no-clock" };
clk: stm32f4: SDIO & 48Mhz clock management for STM32F469 board In the stm32f469 soc, the 48Mhz clock could be derived from pll-q or from pll-sai-p. The SDIO clock could be also derived from 48Mhz or from sys clock. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:18 +03:00
static const char *pll48_parents[2] = { "pll-q", "pllsai-p" };
static const char *sdmux_parents[2] = { "pll48", "sys" };
clk: stm32f7: Introduce stm32f7 clocks for STM32F746 boards This patch enables clocks for STM32F746 boards. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-01-06 16:59:23 +03:00
static const char *hdmi_parents[2] = { "lse", "hsi_div488" };
static const char *spdif_parent[1] = { "plli2s-p" };
static const char *lptim_parent[4] = { "apb1_mul", "lsi", "hsi", "lse" };
static const char *uart_parents1[4] = { "apb2_div", "sys", "hsi", "lse" };
static const char *uart_parents2[4] = { "apb1_div", "sys", "hsi", "lse" };
static const char *i2c_parents[4] = { "apb1_div", "sys", "hsi", "no-clock" };
clk: stm32f4: Add lcd-tft clock This patch introduces lcd-tft clock for stm32f4 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:15 +03:00
struct stm32_aux_clk {
int idx;
const char *name;
const char * const *parent_names;
int num_parents;
int offset_mux;
u8 shift;
u8 mask;
int offset_gate;
u8 bit_idx;
unsigned long flags;
};
clk: stm32f469: Add QSPI clock This patch adds the QSPI clock for stm32f469 discovery board. The gate mapping is a little bit different from stm32f429 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:30 +03:00
struct stm32f4_clk_data {
const struct stm32f4_gate_data *gates_data;
const u64 *gates_map;
int gates_num;
clk: stm32f4: Add PLL_I2S & PLL_SAI for STM32F429/469 boards This patch introduces PLL_I2S and PLL_SAI. Vco clock of these PLLs can be modify by DT (only n multiplicator, m divider is still fixed by the boot-loader). Each PLL has 3 dividers. PLL should be off when we modify the rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> [sboyd@codeaurora.org: Mark stm32f4_pll_div_ops static] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:13 +03:00
const struct stm32f4_pll_data *pll_data;
clk: stm32f4: Add lcd-tft clock This patch introduces lcd-tft clock for stm32f4 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:15 +03:00
const struct stm32_aux_clk *aux_clk;
int aux_clk_num;
clk: stm32f7: Introduce stm32f7 clocks for STM32F746 boards This patch enables clocks for STM32F746 boards. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-01-06 16:59:23 +03:00
int end_primary;
clk: stm32f4: Add lcd-tft clock This patch introduces lcd-tft clock for stm32f4 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:15 +03:00
};
static const struct stm32_aux_clk stm32f429_aux_clk[] = {
{
CLK_LCD, "lcd-tft", lcd_parent, ARRAY_SIZE(lcd_parent),
NO_MUX, 0, 0,
STM32F4_RCC_APB2ENR, 26,
CLK_SET_RATE_PARENT
},
clk: stm32f4: Add I2S clock This patch introduces I2S clock for stm32f4 soc. The I2S clock could be derived from an external clock or from pll-i2s Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:16 +03:00
{
CLK_I2S, "i2s", i2s_parents, ARRAY_SIZE(i2s_parents),
STM32F4_RCC_CFGR, 23, 1,
NO_GATE, 0,
CLK_SET_RATE_PARENT
},
clk: stm32f4: Add SAI clocks This patch introduces SAI clocks for stm32f4 socs. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:17 +03:00
{
CLK_SAI1, "sai1-a", sai_parents, ARRAY_SIZE(sai_parents),
STM32F4_RCC_DCKCFGR, 20, 3,
STM32F4_RCC_APB2ENR, 22,
CLK_SET_RATE_PARENT
},
{
CLK_SAI2, "sai1-b", sai_parents, ARRAY_SIZE(sai_parents),
STM32F4_RCC_DCKCFGR, 22, 3,
STM32F4_RCC_APB2ENR, 22,
CLK_SET_RATE_PARENT
},
clk: stm32f469: Add QSPI clock This patch adds the QSPI clock for stm32f469 discovery board. The gate mapping is a little bit different from stm32f429 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:30 +03:00
};
clk: stm32f4: SDIO & 48Mhz clock management for STM32F469 board In the stm32f469 soc, the 48Mhz clock could be derived from pll-q or from pll-sai-p. The SDIO clock could be also derived from 48Mhz or from sys clock. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:18 +03:00
static const struct stm32_aux_clk stm32f469_aux_clk[] = {
{
CLK_LCD, "lcd-tft", lcd_parent, ARRAY_SIZE(lcd_parent),
NO_MUX, 0, 0,
STM32F4_RCC_APB2ENR, 26,
CLK_SET_RATE_PARENT
},
{
CLK_I2S, "i2s", i2s_parents, ARRAY_SIZE(i2s_parents),
STM32F4_RCC_CFGR, 23, 1,
NO_GATE, 0,
CLK_SET_RATE_PARENT
},
{
CLK_SAI1, "sai1-a", sai_parents, ARRAY_SIZE(sai_parents),
STM32F4_RCC_DCKCFGR, 20, 3,
STM32F4_RCC_APB2ENR, 22,
CLK_SET_RATE_PARENT
},
{
CLK_SAI2, "sai1-b", sai_parents, ARRAY_SIZE(sai_parents),
STM32F4_RCC_DCKCFGR, 22, 3,
STM32F4_RCC_APB2ENR, 22,
CLK_SET_RATE_PARENT
},
{
NO_IDX, "pll48", pll48_parents, ARRAY_SIZE(pll48_parents),
STM32F4_RCC_DCKCFGR, 27, 1,
NO_GATE, 0,
0
},
{
NO_IDX, "sdmux", sdmux_parents, ARRAY_SIZE(sdmux_parents),
STM32F4_RCC_DCKCFGR, 28, 1,
NO_GATE, 0,
0
},
clk: stm32: Add DSI clock for STM32F469 Board This patch adds DSI clock for STM32F469 board Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-03-09 09:57:31 +03:00
{
CLK_F469_DSI, "dsi", dsi_parent, ARRAY_SIZE(dsi_parent),
STM32F4_RCC_DCKCFGR, 29, 1,
STM32F4_RCC_APB2ENR, 27,
CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT
},
clk: stm32f469: Add QSPI clock This patch adds the QSPI clock for stm32f469 discovery board. The gate mapping is a little bit different from stm32f429 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:30 +03:00
};
clk: stm32f7: Introduce stm32f7 clocks for STM32F746 boards This patch enables clocks for STM32F746 boards. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-01-06 16:59:23 +03:00
static const struct stm32_aux_clk stm32f746_aux_clk[] = {
{
CLK_LCD, "lcd-tft", lcd_parent, ARRAY_SIZE(lcd_parent),
NO_MUX, 0, 0,
STM32F4_RCC_APB2ENR, 26,
CLK_SET_RATE_PARENT
},
{
CLK_I2S, "i2s", i2s_parents, ARRAY_SIZE(i2s_parents),
STM32F4_RCC_CFGR, 23, 1,
NO_GATE, 0,
CLK_SET_RATE_PARENT
},
{
CLK_SAI1, "sai1_clk", sai_parents, ARRAY_SIZE(sai_parents),
STM32F4_RCC_DCKCFGR, 20, 3,
STM32F4_RCC_APB2ENR, 22,
CLK_SET_RATE_PARENT
},
{
CLK_SAI2, "sai2_clk", sai_parents, ARRAY_SIZE(sai_parents),
STM32F4_RCC_DCKCFGR, 22, 3,
STM32F4_RCC_APB2ENR, 23,
CLK_SET_RATE_PARENT
},
{
NO_IDX, "pll48", pll48_parents, ARRAY_SIZE(pll48_parents),
STM32F7_RCC_DCKCFGR2, 27, 1,
NO_GATE, 0,
0
},
{
NO_IDX, "sdmux", sdmux_parents, ARRAY_SIZE(sdmux_parents),
STM32F7_RCC_DCKCFGR2, 28, 1,
NO_GATE, 0,
0
},
{
CLK_HDMI_CEC, "hdmi-cec",
hdmi_parents, ARRAY_SIZE(hdmi_parents),
STM32F7_RCC_DCKCFGR2, 26, 1,
NO_GATE, 0,
0
},
{
CLK_SPDIF, "spdif-rx",
spdif_parent, ARRAY_SIZE(spdif_parent),
STM32F7_RCC_DCKCFGR2, 22, 3,
STM32F4_RCC_APB2ENR, 23,
CLK_SET_RATE_PARENT
},
{
CLK_USART1, "usart1",
uart_parents1, ARRAY_SIZE(uart_parents1),
STM32F7_RCC_DCKCFGR2, 0, 3,
STM32F4_RCC_APB2ENR, 4,
CLK_SET_RATE_PARENT,
},
{
CLK_USART2, "usart2",
uart_parents2, ARRAY_SIZE(uart_parents1),
STM32F7_RCC_DCKCFGR2, 2, 3,
STM32F4_RCC_APB1ENR, 17,
CLK_SET_RATE_PARENT,
},
{
CLK_USART3, "usart3",
uart_parents2, ARRAY_SIZE(uart_parents1),
STM32F7_RCC_DCKCFGR2, 4, 3,
STM32F4_RCC_APB1ENR, 18,
CLK_SET_RATE_PARENT,
},
{
CLK_UART4, "uart4",
uart_parents2, ARRAY_SIZE(uart_parents1),
STM32F7_RCC_DCKCFGR2, 6, 3,
STM32F4_RCC_APB1ENR, 19,
CLK_SET_RATE_PARENT,
},
{
CLK_UART5, "uart5",
uart_parents2, ARRAY_SIZE(uart_parents1),
STM32F7_RCC_DCKCFGR2, 8, 3,
STM32F4_RCC_APB1ENR, 20,
CLK_SET_RATE_PARENT,
},
{
CLK_USART6, "usart6",
uart_parents1, ARRAY_SIZE(uart_parents1),
STM32F7_RCC_DCKCFGR2, 10, 3,
STM32F4_RCC_APB2ENR, 5,
CLK_SET_RATE_PARENT,
},
{
CLK_UART7, "uart7",
uart_parents2, ARRAY_SIZE(uart_parents1),
STM32F7_RCC_DCKCFGR2, 12, 3,
STM32F4_RCC_APB1ENR, 30,
CLK_SET_RATE_PARENT,
},
{
CLK_UART8, "uart8",
uart_parents2, ARRAY_SIZE(uart_parents1),
STM32F7_RCC_DCKCFGR2, 14, 3,
STM32F4_RCC_APB1ENR, 31,
CLK_SET_RATE_PARENT,
},
{
CLK_I2C1, "i2c1",
i2c_parents, ARRAY_SIZE(i2c_parents),
STM32F7_RCC_DCKCFGR2, 16, 3,
STM32F4_RCC_APB1ENR, 21,
CLK_SET_RATE_PARENT,
},
{
CLK_I2C2, "i2c2",
i2c_parents, ARRAY_SIZE(i2c_parents),
STM32F7_RCC_DCKCFGR2, 18, 3,
STM32F4_RCC_APB1ENR, 22,
CLK_SET_RATE_PARENT,
},
{
CLK_I2C3, "i2c3",
i2c_parents, ARRAY_SIZE(i2c_parents),
STM32F7_RCC_DCKCFGR2, 20, 3,
STM32F4_RCC_APB1ENR, 23,
CLK_SET_RATE_PARENT,
},
{
CLK_I2C4, "i2c4",
i2c_parents, ARRAY_SIZE(i2c_parents),
STM32F7_RCC_DCKCFGR2, 22, 3,
STM32F4_RCC_APB1ENR, 24,
CLK_SET_RATE_PARENT,
},
{
CLK_LPTIMER, "lptim1",
lptim_parent, ARRAY_SIZE(lptim_parent),
STM32F7_RCC_DCKCFGR2, 24, 3,
STM32F4_RCC_APB1ENR, 9,
CLK_SET_RATE_PARENT
},
};
clk: stm32f469: Add QSPI clock This patch adds the QSPI clock for stm32f469 discovery board. The gate mapping is a little bit different from stm32f429 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:30 +03:00
static const struct stm32f4_clk_data stm32f429_clk_data = {
clk: stm32f7: Introduce stm32f7 clocks for STM32F746 boards This patch enables clocks for STM32F746 boards. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-01-06 16:59:23 +03:00
.end_primary = END_PRIMARY_CLK,
clk: stm32f469: Add QSPI clock This patch adds the QSPI clock for stm32f469 discovery board. The gate mapping is a little bit different from stm32f429 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:30 +03:00
.gates_data = stm32f429_gates,
.gates_map = stm32f42xx_gate_map,
.gates_num = ARRAY_SIZE(stm32f429_gates),
clk: stm32f4: Add PLL_I2S & PLL_SAI for STM32F429/469 boards This patch introduces PLL_I2S and PLL_SAI. Vco clock of these PLLs can be modify by DT (only n multiplicator, m divider is still fixed by the boot-loader). Each PLL has 3 dividers. PLL should be off when we modify the rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> [sboyd@codeaurora.org: Mark stm32f4_pll_div_ops static] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:13 +03:00
.pll_data = stm32f429_pll,
clk: stm32f4: Add lcd-tft clock This patch introduces lcd-tft clock for stm32f4 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:15 +03:00
.aux_clk = stm32f429_aux_clk,
.aux_clk_num = ARRAY_SIZE(stm32f429_aux_clk),
clk: stm32f469: Add QSPI clock This patch adds the QSPI clock for stm32f469 discovery board. The gate mapping is a little bit different from stm32f429 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:30 +03:00
};
static const struct stm32f4_clk_data stm32f469_clk_data = {
clk: stm32f7: Introduce stm32f7 clocks for STM32F746 boards This patch enables clocks for STM32F746 boards. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-01-06 16:59:23 +03:00
.end_primary = END_PRIMARY_CLK,
clk: stm32f469: Add QSPI clock This patch adds the QSPI clock for stm32f469 discovery board. The gate mapping is a little bit different from stm32f429 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:30 +03:00
.gates_data = stm32f469_gates,
.gates_map = stm32f46xx_gate_map,
.gates_num = ARRAY_SIZE(stm32f469_gates),
clk: stm32f4: Add PLL_I2S & PLL_SAI for STM32F429/469 boards This patch introduces PLL_I2S and PLL_SAI. Vco clock of these PLLs can be modify by DT (only n multiplicator, m divider is still fixed by the boot-loader). Each PLL has 3 dividers. PLL should be off when we modify the rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> [sboyd@codeaurora.org: Mark stm32f4_pll_div_ops static] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:13 +03:00
.pll_data = stm32f469_pll,
clk: stm32f4: SDIO & 48Mhz clock management for STM32F469 board In the stm32f469 soc, the 48Mhz clock could be derived from pll-q or from pll-sai-p. The SDIO clock could be also derived from 48Mhz or from sys clock. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:18 +03:00
.aux_clk = stm32f469_aux_clk,
.aux_clk_num = ARRAY_SIZE(stm32f469_aux_clk),
clk: stm32f469: Add QSPI clock This patch adds the QSPI clock for stm32f469 discovery board. The gate mapping is a little bit different from stm32f429 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:30 +03:00
};
clk: stm32f7: Introduce stm32f7 clocks for STM32F746 boards This patch enables clocks for STM32F746 boards. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-01-06 16:59:23 +03:00
static const struct stm32f4_clk_data stm32f746_clk_data = {
.end_primary = END_PRIMARY_CLK_F7,
.gates_data = stm32f746_gates,
.gates_map = stm32f746_gate_map,
.gates_num = ARRAY_SIZE(stm32f746_gates),
.pll_data = stm32f469_pll,
.aux_clk = stm32f746_aux_clk,
.aux_clk_num = ARRAY_SIZE(stm32f746_aux_clk),
};
clk: stm32f469: Add QSPI clock This patch adds the QSPI clock for stm32f469 discovery board. The gate mapping is a little bit different from stm32f429 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:30 +03:00
static const struct of_device_id stm32f4_of_match[] = {
{
.compatible = "st,stm32f42xx-rcc",
.data = &stm32f429_clk_data
},
{
.compatible = "st,stm32f469-rcc",
.data = &stm32f469_clk_data
},
clk: stm32f7: Introduce stm32f7 clocks for STM32F746 boards This patch enables clocks for STM32F746 boards. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-01-06 16:59:23 +03:00
{
.compatible = "st,stm32f746-rcc",
.data = &stm32f746_clk_data
},
clk: stm32f469: Add QSPI clock This patch adds the QSPI clock for stm32f469 discovery board. The gate mapping is a little bit different from stm32f429 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:30 +03:00
{}
};
clk: stm32f4: Add lcd-tft clock This patch introduces lcd-tft clock for stm32f4 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:15 +03:00
static struct clk_hw *stm32_register_aux_clk(const char *name,
const char * const *parent_names, int num_parents,
int offset_mux, u8 shift, u8 mask,
int offset_gate, u8 bit_idx,
unsigned long flags, spinlock_t *lock)
{
struct clk_hw *hw;
clk: stm32f4: avoid uninitialized variable access The failure path in the newly added function tries to free an uninitialized pointer: drivers/clk/clk-stm32f4.c: In function 'stm32f4_rcc_init': drivers/clk/clk-stm32f4.c:1106:4: error: 'gate' may be used uninitialized in this function [-Werror=maybe-uninitialized] I'm adding an initialization to NULL here to make the kfree() succeed, and I'm also rearranging the cleanup so that the same kfree() is used for any error path, making the function slightly more robust against newly introduced bugs in the error handling. Fixes: daf2d117cbca ("clk: stm32f4: Add lcd-tft clock") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-01-11 16:40:52 +03:00
struct clk_gate *gate = NULL;
clk: stm32f4: Add lcd-tft clock This patch introduces lcd-tft clock for stm32f4 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:15 +03:00
struct clk_mux *mux = NULL;
struct clk_hw *mux_hw = NULL, *gate_hw = NULL;
const struct clk_ops *mux_ops = NULL, *gate_ops = NULL;
if (offset_gate != NO_GATE) {
gate = kzalloc(sizeof(*gate), GFP_KERNEL);
if (!gate) {
hw = ERR_PTR(-EINVAL);
goto fail;
}
gate->reg = base + offset_gate;
gate->bit_idx = bit_idx;
gate->flags = 0;
gate->lock = lock;
gate_hw = &gate->hw;
gate_ops = &clk_gate_ops;
}
if (offset_mux != NO_MUX) {
mux = kzalloc(sizeof(*mux), GFP_KERNEL);
if (!mux) {
hw = ERR_PTR(-EINVAL);
goto fail;
}
mux->reg = base + offset_mux;
mux->shift = shift;
mux->mask = mask;
mux->flags = 0;
mux_hw = &mux->hw;
mux_ops = &clk_mux_ops;
}
clk: stm32f4: avoid uninitialized variable access The failure path in the newly added function tries to free an uninitialized pointer: drivers/clk/clk-stm32f4.c: In function 'stm32f4_rcc_init': drivers/clk/clk-stm32f4.c:1106:4: error: 'gate' may be used uninitialized in this function [-Werror=maybe-uninitialized] I'm adding an initialization to NULL here to make the kfree() succeed, and I'm also rearranging the cleanup so that the same kfree() is used for any error path, making the function slightly more robust against newly introduced bugs in the error handling. Fixes: daf2d117cbca ("clk: stm32f4: Add lcd-tft clock") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-01-11 16:40:52 +03:00
if (mux_hw == NULL && gate_hw == NULL) {
hw = ERR_PTR(-EINVAL);
goto fail;
}
clk: stm32f4: Add lcd-tft clock This patch introduces lcd-tft clock for stm32f4 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:15 +03:00
hw = clk_hw_register_composite(NULL, name, parent_names, num_parents,
mux_hw, mux_ops,
NULL, NULL,
gate_hw, gate_ops,
flags);
clk: stm32f4: avoid uninitialized variable access The failure path in the newly added function tries to free an uninitialized pointer: drivers/clk/clk-stm32f4.c: In function 'stm32f4_rcc_init': drivers/clk/clk-stm32f4.c:1106:4: error: 'gate' may be used uninitialized in this function [-Werror=maybe-uninitialized] I'm adding an initialization to NULL here to make the kfree() succeed, and I'm also rearranging the cleanup so that the same kfree() is used for any error path, making the function slightly more robust against newly introduced bugs in the error handling. Fixes: daf2d117cbca ("clk: stm32f4: Add lcd-tft clock") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-01-11 16:40:52 +03:00
fail:
clk: stm32f4: Add lcd-tft clock This patch introduces lcd-tft clock for stm32f4 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:15 +03:00
if (IS_ERR(hw)) {
kfree(gate);
kfree(mux);
}
clk: stm32f4: avoid uninitialized variable access The failure path in the newly added function tries to free an uninitialized pointer: drivers/clk/clk-stm32f4.c: In function 'stm32f4_rcc_init': drivers/clk/clk-stm32f4.c:1106:4: error: 'gate' may be used uninitialized in this function [-Werror=maybe-uninitialized] I'm adding an initialization to NULL here to make the kfree() succeed, and I'm also rearranging the cleanup so that the same kfree() is used for any error path, making the function slightly more robust against newly introduced bugs in the error handling. Fixes: daf2d117cbca ("clk: stm32f4: Add lcd-tft clock") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-01-11 16:40:52 +03:00
clk: stm32f4: Add lcd-tft clock This patch introduces lcd-tft clock for stm32f4 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:15 +03:00
return hw;
}
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
static void __init stm32f4_rcc_init(struct device_node *np)
{
clk: stm32f4: Add I2S clock This patch introduces I2S clock for stm32f4 soc. The I2S clock could be derived from an external clock or from pll-i2s Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:16 +03:00
const char *hse_clk, *i2s_in_clk;
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
int n;
clk: stm32f469: Add QSPI clock This patch adds the QSPI clock for stm32f469 discovery board. The gate mapping is a little bit different from stm32f429 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:30 +03:00
const struct of_device_id *match;
const struct stm32f4_clk_data *data;
clk: stm32f4: Add PLL_I2S & PLL_SAI for STM32F429/469 boards This patch introduces PLL_I2S and PLL_SAI. Vco clock of these PLLs can be modify by DT (only n multiplicator, m divider is still fixed by the boot-loader). Each PLL has 3 dividers. PLL should be off when we modify the rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> [sboyd@codeaurora.org: Mark stm32f4_pll_div_ops static] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:13 +03:00
unsigned long pllcfgr;
const char *pllsrc;
unsigned long pllm;
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
base = of_iomap(np, 0);
if (!base) {
clk: stm32f4: pr_err() strings should end with newlines pr_err() messages should end with a new-line to avoid other messages being concatenated. Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-11-24 09:55:28 +03:00
pr_err("%s: unable to map resource\n", np->name);
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
return;
}
clk: stm32f4: Add LSI & LSE clocks This patch introduces the support of the LSI & LSE clocks. The clock drivers needs to disable the power domain write protection using syscon/regmap to enable these clocks. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:28 +03:00
pdrm = syscon_regmap_lookup_by_phandle(np, "st,syscfg");
if (IS_ERR(pdrm)) {
pdrm = NULL;
pr_warn("%s: Unable to get syscfg\n", __func__);
}
clk: stm32f469: Add QSPI clock This patch adds the QSPI clock for stm32f469 discovery board. The gate mapping is a little bit different from stm32f429 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:30 +03:00
match = of_match_node(stm32f4_of_match, np);
if (WARN_ON(!match))
return;
data = match->data;
clk: stm32f7: Introduce stm32f7 clocks for STM32F746 boards This patch enables clocks for STM32F746 boards. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-01-06 16:59:23 +03:00
stm32fx_end_primary_clk = data->end_primary;
clks = kmalloc_array(data->gates_num + stm32fx_end_primary_clk,
clk: stm32f469: Add QSPI clock This patch adds the QSPI clock for stm32f469 discovery board. The gate mapping is a little bit different from stm32f429 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:30 +03:00
sizeof(*clks), GFP_KERNEL);
if (!clks)
goto fail;
stm32f4_gate_map = data->gates_map;
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
hse_clk = of_clk_get_parent_name(np, 0);
clk: stm32: Add DSI clock for STM32F469 Board This patch adds DSI clock for STM32F469 board Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-03-09 09:57:31 +03:00
dsi_parent[0] = hse_clk;
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
clk: stm32f4: Add I2S clock This patch introduces I2S clock for stm32f4 soc. The I2S clock could be derived from an external clock or from pll-i2s Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:16 +03:00
i2s_in_clk = of_clk_get_parent_name(np, 1);
i2s_parents[1] = i2s_in_clk;
clk: stm32f4: Add SAI clocks This patch introduces SAI clocks for stm32f4 socs. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:17 +03:00
sai_parents[2] = i2s_in_clk;
clk: stm32f4: Add I2S clock This patch introduces I2S clock for stm32f4 soc. The I2S clock could be derived from an external clock or from pll-i2s Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:16 +03:00
clk: stm32f7: Introduce stm32f7 clocks for STM32F746 boards This patch enables clocks for STM32F746 boards. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-01-06 16:59:23 +03:00
clks[CLK_HSI] = clk_hw_register_fixed_rate_with_accuracy(NULL, "hsi",
NULL, 0, 16000000, 160000);
clk: stm32f4: Add PLL_I2S & PLL_SAI for STM32F429/469 boards This patch introduces PLL_I2S and PLL_SAI. Vco clock of these PLLs can be modify by DT (only n multiplicator, m divider is still fixed by the boot-loader). Each PLL has 3 dividers. PLL should be off when we modify the rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> [sboyd@codeaurora.org: Mark stm32f4_pll_div_ops static] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:13 +03:00
pllcfgr = readl(base + STM32F4_RCC_PLLCFGR);
pllsrc = pllcfgr & BIT(22) ? hse_clk : "hsi";
pllm = pllcfgr & 0x3f;
clk_hw_register_fixed_factor(NULL, "vco_in", pllsrc,
0, 1, pllm);
stm32f4_rcc_register_pll("vco_in", &data->pll_data[0],
&stm32f4_clk_lock);
clks[PLL_VCO_I2S] = stm32f4_rcc_register_pll("vco_in",
&data->pll_data[1], &stm32f4_clk_lock);
clks[PLL_VCO_SAI] = stm32f4_rcc_register_pll("vco_in",
&data->pll_data[2], &stm32f4_clk_lock);
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
clk: stm32f4: Add post divisor for I2S & SAI PLLs This patch adds post dividers of I2S & SAI PLLs. These dividers are managed by a dedicated register (RCC_DCKCFGR). The PLL should be off before a set rate. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:14 +03:00
for (n = 0; n < MAX_POST_DIV; n++) {
const struct stm32f4_pll_post_div_data *post_div;
struct clk_hw *hw;
post_div = &post_div_data[n];
hw = clk_register_pll_div(post_div->name,
post_div->parent,
post_div->flag,
base + post_div->offset,
post_div->shift,
post_div->width,
post_div->flag_div,
post_div->div_table,
clks[post_div->pll_num],
&stm32f4_clk_lock);
if (post_div->idx != NO_IDX)
clks[post_div->idx] = hw;
}
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
sys_parents[1] = hse_clk;
clk: stm32f7: Introduce stm32f7 clocks for STM32F746 boards This patch enables clocks for STM32F746 boards. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-01-06 16:59:23 +03:00
clks[CLK_SYSCLK] = clk_hw_register_mux_table(
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
NULL, "sys", sys_parents, ARRAY_SIZE(sys_parents), 0,
base + STM32F4_RCC_CFGR, 0, 3, 0, NULL, &stm32f4_clk_lock);
clk_register_divider_table(NULL, "ahb_div", "sys",
CLK_SET_RATE_PARENT, base + STM32F4_RCC_CFGR,
4, 4, 0, ahb_div_table, &stm32f4_clk_lock);
clk_register_divider_table(NULL, "apb1_div", "ahb_div",
CLK_SET_RATE_PARENT, base + STM32F4_RCC_CFGR,
10, 3, 0, apb_div_table, &stm32f4_clk_lock);
clk_register_apb_mul(NULL, "apb1_mul", "apb1_div",
CLK_SET_RATE_PARENT, 12);
clk_register_divider_table(NULL, "apb2_div", "ahb_div",
CLK_SET_RATE_PARENT, base + STM32F4_RCC_CFGR,
13, 3, 0, apb_div_table, &stm32f4_clk_lock);
clk_register_apb_mul(NULL, "apb2_mul", "apb2_div",
CLK_SET_RATE_PARENT, 15);
clk: stm32f4: Migrate to clk_hw based OF and registration APIs Now that we have clk_hw based provider APIs to register clks, we can get rid of struct clk pointers while registering clks in these drivers, allowing us to move closer to a clear split of consumer and provider clk APIs. Cc: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-06-02 02:15:29 +03:00
clks[SYSTICK] = clk_hw_register_fixed_factor(NULL, "systick", "ahb_div",
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
0, 1, 8);
clk: stm32f4: Migrate to clk_hw based OF and registration APIs Now that we have clk_hw based provider APIs to register clks, we can get rid of struct clk pointers while registering clks in these drivers, allowing us to move closer to a clear split of consumer and provider clk APIs. Cc: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-06-02 02:15:29 +03:00
clks[FCLK] = clk_hw_register_fixed_factor(NULL, "fclk", "ahb_div",
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
0, 1, 1);
clk: stm32f469: Add QSPI clock This patch adds the QSPI clock for stm32f469 discovery board. The gate mapping is a little bit different from stm32f429 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:30 +03:00
for (n = 0; n < data->gates_num; n++) {
const struct stm32f4_gate_data *gd;
unsigned int secondary;
int idx;
gd = &data->gates_data[n];
secondary = 8 * (gd->offset - STM32F4_RCC_AHB1ENR) +
gd->bit_idx;
idx = stm32f4_rcc_lookup_clk_idx(0, secondary);
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
if (idx < 0)
goto fail;
clk: stm32f4: Migrate to clk_hw based OF and registration APIs Now that we have clk_hw based provider APIs to register clks, we can get rid of struct clk pointers while registering clks in these drivers, allowing us to move closer to a clear split of consumer and provider clk APIs. Cc: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-06-02 02:15:29 +03:00
clks[idx] = clk_hw_register_gate(
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
NULL, gd->name, gd->parent_name, gd->flags,
base + gd->offset, gd->bit_idx, 0, &stm32f4_clk_lock);
clk: stm32f4: fix error handling This is likely that checking 'clks[idx]' instead of 'clks[n]' is expected here. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: Michael Turquette <mturquette@baylibre.com> Link: lkml.kernel.org/r/1467526003-13318-1-git-send-email-christophe.jaillet@wanadoo.fr
2016-07-03 09:06:43 +03:00
if (IS_ERR(clks[idx])) {
clk: Convert to using %pOF instead of full_name Now that we have a custom printf format specifier, convert users of full_name to use %pOF instead. This is preparation to remove storing of the full path string for each node. Signed-off-by: Rob Herring <robh@kernel.org> Cc: Michael Turquette <mturquette@baylibre.com> Cc: Stephen Boyd <sboyd@codeaurora.org> Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com> Cc: Alexandre Torgue <alexandre.torgue@st.com> Cc: Russell King <linux@armlinux.org.uk> Cc: Matthias Brugger <matthias.bgg@gmail.com> Cc: Geert Uytterhoeven <geert+renesas@glider.be> Cc: Maxime Ripard <maxime.ripard@free-electrons.com> Cc: Chen-Yu Tsai <wens@csie.org> Cc: "Emilio López" <emilio@elopez.com.ar> Cc: Peter De Schrijver <pdeschrijver@nvidia.com> Cc: Prashant Gaikwad <pgaikwad@nvidia.com> Cc: Thierry Reding <thierry.reding@gmail.com> Cc: Jonathan Hunter <jonathanh@nvidia.com> Cc: Tero Kristo <t-kristo@ti.com> Cc: linux-clk@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: linux-mediatek@lists.infradead.org Cc: linux-renesas-soc@vger.kernel.org Cc: linux-tegra@vger.kernel.org Cc: linux-omap@vger.kernel.org Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: James Liao <jamesjj.liao@mediatek.com> Acked-by: Alexandre TORGUE <alexandre.torgue@st.com> Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-07-19 00:42:52 +03:00
pr_err("%pOF: Unable to register leaf clock %s\n",
np, gd->name);
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
goto fail;
}
}
clk: stm32f4: Add LSI & LSE clocks This patch introduces the support of the LSI & LSE clocks. The clock drivers needs to disable the power domain write protection using syscon/regmap to enable these clocks. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:28 +03:00
clks[CLK_LSI] = clk_register_rgate(NULL, "lsi", "clk-lsi", 0,
clk: stm32f4: fix timeout management for pll and ready gate Use a classic polling to test bit ready. And the shift of the bit ready of LSE & LSI were wrongs. Fixes: 861adc44d290 ("clk: stm32f4: Add LSI & LSE clocks") Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Michael Turquette <mturquette@baylibre.com>
2017-03-16 11:16:41 +03:00
base + STM32F4_RCC_CSR, 0, 1, 0, &stm32f4_clk_lock);
clk: stm32f4: Add LSI & LSE clocks This patch introduces the support of the LSI & LSE clocks. The clock drivers needs to disable the power domain write protection using syscon/regmap to enable these clocks. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:28 +03:00
if (IS_ERR(clks[CLK_LSI])) {
pr_err("Unable to register lsi clock\n");
goto fail;
}
clks[CLK_LSE] = clk_register_rgate(NULL, "lse", "clk-lse", 0,
clk: stm32f4: fix timeout management for pll and ready gate Use a classic polling to test bit ready. And the shift of the bit ready of LSE & LSI were wrongs. Fixes: 861adc44d290 ("clk: stm32f4: Add LSI & LSE clocks") Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Signed-off-by: Michael Turquette <mturquette@baylibre.com>
2017-03-16 11:16:41 +03:00
base + STM32F4_RCC_BDCR, 0, 1, 0, &stm32f4_clk_lock);
clk: stm32f4: Add LSI & LSE clocks This patch introduces the support of the LSI & LSE clocks. The clock drivers needs to disable the power domain write protection using syscon/regmap to enable these clocks. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:28 +03:00
if (IS_ERR(clks[CLK_LSE])) {
pr_err("Unable to register lse clock\n");
goto fail;
}
clk: stm32f4: Add RTC clock This patch introduces the support of the RTC clock. RTC clock can have 3 sources: lsi, lse and hse_rtc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:29 +03:00
clks[CLK_HSE_RTC] = clk_hw_register_divider(NULL, "hse-rtc", "clk-hse",
0, base + STM32F4_RCC_CFGR, 16, 5, 0,
&stm32f4_clk_lock);
if (IS_ERR(clks[CLK_HSE_RTC])) {
pr_err("Unable to register hse-rtc clock\n");
goto fail;
}
clks[CLK_RTC] = stm32_register_cclk(NULL, "rtc", rtc_parents, 4,
base + STM32F4_RCC_BDCR, 15, 8, 0, &stm32f4_clk_lock);
if (IS_ERR(clks[CLK_RTC])) {
pr_err("Unable to register rtc clock\n");
goto fail;
}
clk: stm32f4: Add lcd-tft clock This patch introduces lcd-tft clock for stm32f4 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-13 17:20:15 +03:00
for (n = 0; n < data->aux_clk_num; n++) {
const struct stm32_aux_clk *aux_clk;
struct clk_hw *hw;
aux_clk = &data->aux_clk[n];
hw = stm32_register_aux_clk(aux_clk->name,
aux_clk->parent_names, aux_clk->num_parents,
aux_clk->offset_mux, aux_clk->shift,
aux_clk->mask, aux_clk->offset_gate,
aux_clk->bit_idx, aux_clk->flags,
&stm32f4_clk_lock);
if (IS_ERR(hw)) {
pr_warn("Unable to register %s clk\n", aux_clk->name);
continue;
}
if (aux_clk->idx != NO_IDX)
clks[aux_clk->idx] = hw;
}
clk: stm32f7: Introduce stm32f7 clocks for STM32F746 boards This patch enables clocks for STM32F746 boards. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-01-06 16:59:23 +03:00
if (of_device_is_compatible(np, "st,stm32f746-rcc"))
clk_hw_register_fixed_factor(NULL, "hsi_div488", "hsi", 0,
1, 488);
clk: stm32f4: Migrate to clk_hw based OF and registration APIs Now that we have clk_hw based provider APIs to register clks, we can get rid of struct clk pointers while registering clks in these drivers, allowing us to move closer to a clear split of consumer and provider clk APIs. Cc: Daniel Thompson <daniel.thompson@linaro.org> Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-06-02 02:15:29 +03:00
of_clk_add_hw_provider(np, stm32f4_rcc_lookup_clk, NULL);
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
return;
fail:
clk: stm32f469: Add QSPI clock This patch adds the QSPI clock for stm32f469 discovery board. The gate mapping is a little bit different from stm32f429 soc. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-10-21 12:23:30 +03:00
kfree(clks);
clk: stm32: Add clock driver for STM32F4[23]xxx devices The driver supports decoding and statically modelling PLL state (i.e. we inherit state from bootloader) and provides support for all peripherals that support simple one-bit gated clocks. The covers all peripherals whose clocks come from the AHB, APB1 or APB2 buses. It has been tested on an STM32F429I-Discovery board. The clock counts for TIM2, USART1 and SYSTICK are all set correctly and the wall clock looks OK when checked with a stopwatch. I have also tested a prototype driver for the RNG hardware. The RNG clock is correctly enabled by the framework (also did inverse test and proved that by changing DT to configure the wrong clock bit then we observe the RNG driver to fail). Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Maxime Coquelin <mcoquelin.stm32@gmail.com> [sboyd@codeaurora.org: Silence sparse warnings] Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2015-06-10 23:09:37 +03:00
iounmap(base);
}
clk: stm32f4: Use CLK_OF_DECLARE_DRIVER initialization method Clock and reset controller use same compatible strings (same IP). Since commit 989eafd0b609 ("clk: core: Avoid double initialization of clocks") the OF core flags clock controllers registered with the CLK_OF_DECLARE() macro as OF_POPULATED, so platform devices with the same compatible string will not be registered. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-12-14 17:22:28 +03:00
CLK_OF_DECLARE_DRIVER(stm32f42xx_rcc, "st,stm32f42xx-rcc", stm32f4_rcc_init);
CLK_OF_DECLARE_DRIVER(stm32f46xx_rcc, "st,stm32f469-rcc", stm32f4_rcc_init);
clk: stm32f7: Introduce stm32f7 clocks for STM32F746 boards This patch enables clocks for STM32F746 boards. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2017-01-06 16:59:23 +03:00
CLK_OF_DECLARE_DRIVER(stm32f746_rcc, "st,stm32f746-rcc", stm32f4_rcc_init);
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