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linux/arch/mips/ralink/mt7620.c

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MIPS: ralink: adds support for MT7620 SoC family Add support code for mt7620 SOC. The code detects the SoC and registers the clk / pinmux settings. Signed-off-by: John Crispin <blogic@openwrt.org> Acked-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5177/
2013-03-21 17:49:02 +01:00
/*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
* Parts of this file are based on Ralink's 2.6.21 BSP
*
* Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
* Copyright (C) 2013 John Crispin <blogic@openwrt.org>
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/module.h>
#include <asm/mipsregs.h>
#include <asm/mach-ralink/ralink_regs.h>
#include <asm/mach-ralink/mt7620.h>
MIPS: ralink: cleanup the soc specific pinmux data Before we had a pinctrl driver we used a custom OF api. This patch converts the soc specific pinmux data to a new set of structs. We also add some new pinmux setings. Signed-off-by: John Crispin <blogic@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/8009/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-10-09 04:02:53 +02:00
#include <asm/mach-ralink/pinmux.h>
MIPS: ralink: adds support for MT7620 SoC family Add support code for mt7620 SOC. The code detects the SoC and registers the clk / pinmux settings. Signed-off-by: John Crispin <blogic@openwrt.org> Acked-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5177/
2013-03-21 17:49:02 +01:00
#include "common.h"
MIPS: ralink: add verbose pmu info Print the PMU and LDO settings on boot. Signed-off-by: John Crispin <blogic@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/7999/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-07-27 09:16:50 +01:00
/* analog */
#define PMU0_CFG 0x88
#define PMU_SW_SET BIT(28)
#define A_DCDC_EN BIT(24)
#define A_SSC_PERI BIT(19)
#define A_SSC_GEN BIT(18)
#define A_SSC_M 0x3
#define A_SSC_S 16
#define A_DLY_M 0x7
#define A_DLY_S 8
#define A_VTUNE_M 0xff
/* digital */
#define PMU1_CFG 0x8C
#define DIG_SW_SEL BIT(25)
MIPS: ralink: add mt7628an support Signed-off-by: John Crispin <blogic@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/8031/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-10-08 23:30:24 +02:00
/* is this a MT7620 or a MT7628 */
enum mt762x_soc_type mt762x_soc;
MIPS: ralink: adds support for MT7620 SoC family Add support code for mt7620 SOC. The code detects the SoC and registers the clk / pinmux settings. Signed-off-by: John Crispin <blogic@openwrt.org> Acked-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5177/
2013-03-21 17:49:02 +01:00
/* does the board have sdram or ddram */
static int dram_type;
MIPS: ralink: cleanup the soc specific pinmux data Before we had a pinctrl driver we used a custom OF api. This patch converts the soc specific pinmux data to a new set of structs. We also add some new pinmux setings. Signed-off-by: John Crispin <blogic@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/8009/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-10-09 04:02:53 +02:00
static struct rt2880_pmx_func i2c_grp[] = { FUNC("i2c", 0, 1, 2) };
static struct rt2880_pmx_func spi_grp[] = { FUNC("spi", 0, 3, 4) };
static struct rt2880_pmx_func uartlite_grp[] = { FUNC("uartlite", 0, 15, 2) };
static struct rt2880_pmx_func mdio_grp[] = { FUNC("mdio", 0, 22, 2) };
static struct rt2880_pmx_func rgmii1_grp[] = { FUNC("rgmii1", 0, 24, 12) };
static struct rt2880_pmx_func refclk_grp[] = { FUNC("spi refclk", 0, 37, 3) };
static struct rt2880_pmx_func ephy_grp[] = { FUNC("ephy", 0, 40, 5) };
static struct rt2880_pmx_func rgmii2_grp[] = { FUNC("rgmii2", 0, 60, 12) };
static struct rt2880_pmx_func wled_grp[] = { FUNC("wled", 0, 72, 1) };
static struct rt2880_pmx_func pa_grp[] = { FUNC("pa", 0, 18, 4) };
static struct rt2880_pmx_func uartf_grp[] = {
FUNC("uartf", MT7620_GPIO_MODE_UARTF, 7, 8),
FUNC("pcm uartf", MT7620_GPIO_MODE_PCM_UARTF, 7, 8),
FUNC("pcm i2s", MT7620_GPIO_MODE_PCM_I2S, 7, 8),
FUNC("i2s uartf", MT7620_GPIO_MODE_I2S_UARTF, 7, 8),
FUNC("pcm gpio", MT7620_GPIO_MODE_PCM_GPIO, 11, 4),
FUNC("gpio uartf", MT7620_GPIO_MODE_GPIO_UARTF, 7, 4),
FUNC("gpio i2s", MT7620_GPIO_MODE_GPIO_I2S, 7, 4),
MIPS: ralink: adds support for MT7620 SoC family Add support code for mt7620 SOC. The code detects the SoC and registers the clk / pinmux settings. Signed-off-by: John Crispin <blogic@openwrt.org> Acked-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5177/
2013-03-21 17:49:02 +01:00
};
MIPS: ralink: cleanup the soc specific pinmux data Before we had a pinctrl driver we used a custom OF api. This patch converts the soc specific pinmux data to a new set of structs. We also add some new pinmux setings. Signed-off-by: John Crispin <blogic@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/8009/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-10-09 04:02:53 +02:00
static struct rt2880_pmx_func wdt_grp[] = {
FUNC("wdt rst", 0, 17, 1),
FUNC("wdt refclk", 0, 17, 1),
};
static struct rt2880_pmx_func pcie_rst_grp[] = {
FUNC("pcie rst", MT7620_GPIO_MODE_PCIE_RST, 36, 1),
FUNC("pcie refclk", MT7620_GPIO_MODE_PCIE_REF, 36, 1)
};
static struct rt2880_pmx_func nd_sd_grp[] = {
FUNC("nand", MT7620_GPIO_MODE_NAND, 45, 15),
FUNC("sd", MT7620_GPIO_MODE_SD, 45, 15)
MIPS: ralink: adds support for MT7620 SoC family Add support code for mt7620 SOC. The code detects the SoC and registers the clk / pinmux settings. Signed-off-by: John Crispin <blogic@openwrt.org> Acked-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5177/
2013-03-21 17:49:02 +01:00
};
MIPS: ralink: cleanup the soc specific pinmux data Before we had a pinctrl driver we used a custom OF api. This patch converts the soc specific pinmux data to a new set of structs. We also add some new pinmux setings. Signed-off-by: John Crispin <blogic@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/8009/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-10-09 04:02:53 +02:00
static struct rt2880_pmx_group mt7620a_pinmux_data[] = {
GRP("i2c", i2c_grp, 1, MT7620_GPIO_MODE_I2C),
GRP("uartf", uartf_grp, MT7620_GPIO_MODE_UART0_MASK,
MT7620_GPIO_MODE_UART0_SHIFT),
GRP("spi", spi_grp, 1, MT7620_GPIO_MODE_SPI),
GRP("uartlite", uartlite_grp, 1, MT7620_GPIO_MODE_UART1),
GRP_G("wdt", wdt_grp, MT7620_GPIO_MODE_WDT_MASK,
MT7620_GPIO_MODE_WDT_GPIO, MT7620_GPIO_MODE_WDT_SHIFT),
GRP("mdio", mdio_grp, 1, MT7620_GPIO_MODE_MDIO),
GRP("rgmii1", rgmii1_grp, 1, MT7620_GPIO_MODE_RGMII1),
GRP("spi refclk", refclk_grp, 1, MT7620_GPIO_MODE_SPI_REF_CLK),
GRP_G("pcie", pcie_rst_grp, MT7620_GPIO_MODE_PCIE_MASK,
MT7620_GPIO_MODE_PCIE_GPIO, MT7620_GPIO_MODE_PCIE_SHIFT),
GRP_G("nd_sd", nd_sd_grp, MT7620_GPIO_MODE_ND_SD_MASK,
MT7620_GPIO_MODE_ND_SD_GPIO, MT7620_GPIO_MODE_ND_SD_SHIFT),
GRP("rgmii2", rgmii2_grp, 1, MT7620_GPIO_MODE_RGMII2),
GRP("wled", wled_grp, 1, MT7620_GPIO_MODE_WLED),
GRP("ephy", ephy_grp, 1, MT7620_GPIO_MODE_EPHY),
GRP("pa", pa_grp, 1, MT7620_GPIO_MODE_PA),
{ 0 }
MIPS: ralink: adds support for MT7620 SoC family Add support code for mt7620 SOC. The code detects the SoC and registers the clk / pinmux settings. Signed-off-by: John Crispin <blogic@openwrt.org> Acked-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5177/
2013-03-21 17:49:02 +01:00
};
MIPS: ralink: add mt7628an support Signed-off-by: John Crispin <blogic@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/8031/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-10-08 23:30:24 +02:00
static struct rt2880_pmx_func pwm1_grp_mt7628[] = {
FUNC("sdcx", 3, 19, 1),
FUNC("utif", 2, 19, 1),
FUNC("gpio", 1, 19, 1),
FUNC("pwm", 0, 19, 1),
};
static struct rt2880_pmx_func pwm0_grp_mt7628[] = {
FUNC("sdcx", 3, 18, 1),
FUNC("utif", 2, 18, 1),
FUNC("gpio", 1, 18, 1),
FUNC("pwm", 0, 18, 1),
};
static struct rt2880_pmx_func uart2_grp_mt7628[] = {
FUNC("sdcx", 3, 20, 2),
FUNC("pwm", 2, 20, 2),
FUNC("gpio", 1, 20, 2),
FUNC("uart", 0, 20, 2),
};
static struct rt2880_pmx_func uart1_grp_mt7628[] = {
FUNC("sdcx", 3, 45, 2),
FUNC("pwm", 2, 45, 2),
FUNC("gpio", 1, 45, 2),
FUNC("uart", 0, 45, 2),
};
static struct rt2880_pmx_func i2c_grp_mt7628[] = {
FUNC("-", 3, 4, 2),
FUNC("debug", 2, 4, 2),
FUNC("gpio", 1, 4, 2),
FUNC("i2c", 0, 4, 2),
};
static struct rt2880_pmx_func refclk_grp_mt7628[] = { FUNC("reclk", 0, 36, 1) };
static struct rt2880_pmx_func perst_grp_mt7628[] = { FUNC("perst", 0, 37, 1) };
static struct rt2880_pmx_func wdt_grp_mt7628[] = { FUNC("wdt", 0, 15, 38) };
static struct rt2880_pmx_func spi_grp_mt7628[] = { FUNC("spi", 0, 7, 4) };
static struct rt2880_pmx_func sd_mode_grp_mt7628[] = {
FUNC("jtag", 3, 22, 8),
FUNC("utif", 2, 22, 8),
FUNC("gpio", 1, 22, 8),
FUNC("sdcx", 0, 22, 8),
};
static struct rt2880_pmx_func uart0_grp_mt7628[] = {
FUNC("-", 3, 12, 2),
FUNC("-", 2, 12, 2),
FUNC("gpio", 1, 12, 2),
FUNC("uart", 0, 12, 2),
};
static struct rt2880_pmx_func i2s_grp_mt7628[] = {
FUNC("antenna", 3, 0, 4),
FUNC("pcm", 2, 0, 4),
FUNC("gpio", 1, 0, 4),
FUNC("i2s", 0, 0, 4),
};
static struct rt2880_pmx_func spi_cs1_grp_mt7628[] = {
FUNC("-", 3, 6, 1),
FUNC("refclk", 2, 6, 1),
FUNC("gpio", 1, 6, 1),
FUNC("spi", 0, 6, 1),
};
static struct rt2880_pmx_func spis_grp_mt7628[] = {
FUNC("pwm", 3, 14, 4),
FUNC("util", 2, 14, 4),
FUNC("gpio", 1, 14, 4),
FUNC("spis", 0, 14, 4),
};
static struct rt2880_pmx_func gpio_grp_mt7628[] = {
FUNC("pcie", 3, 11, 1),
FUNC("refclk", 2, 11, 1),
FUNC("gpio", 1, 11, 1),
FUNC("gpio", 0, 11, 1),
};
#define MT7628_GPIO_MODE_MASK 0x3
#define MT7628_GPIO_MODE_PWM1 30
#define MT7628_GPIO_MODE_PWM0 28
#define MT7628_GPIO_MODE_UART2 26
#define MT7628_GPIO_MODE_UART1 24
#define MT7628_GPIO_MODE_I2C 20
#define MT7628_GPIO_MODE_REFCLK 18
#define MT7628_GPIO_MODE_PERST 16
#define MT7628_GPIO_MODE_WDT 14
#define MT7628_GPIO_MODE_SPI 12
#define MT7628_GPIO_MODE_SDMODE 10
#define MT7628_GPIO_MODE_UART0 8
#define MT7628_GPIO_MODE_I2S 6
#define MT7628_GPIO_MODE_CS1 4
#define MT7628_GPIO_MODE_SPIS 2
#define MT7628_GPIO_MODE_GPIO 0
static struct rt2880_pmx_group mt7628an_pinmux_data[] = {
GRP_G("pmw1", pwm1_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_PWM1),
GRP_G("pmw1", pwm0_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_PWM0),
GRP_G("uart2", uart2_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_UART2),
GRP_G("uart1", uart1_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_UART1),
GRP_G("i2c", i2c_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_I2C),
GRP("refclk", refclk_grp_mt7628, 1, MT7628_GPIO_MODE_REFCLK),
GRP("perst", perst_grp_mt7628, 1, MT7628_GPIO_MODE_PERST),
GRP("wdt", wdt_grp_mt7628, 1, MT7628_GPIO_MODE_WDT),
GRP("spi", spi_grp_mt7628, 1, MT7628_GPIO_MODE_SPI),
GRP_G("sdmode", sd_mode_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_SDMODE),
GRP_G("uart0", uart0_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_UART0),
GRP_G("i2s", i2s_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_I2S),
GRP_G("spi cs1", spi_cs1_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_CS1),
GRP_G("spis", spis_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_SPIS),
GRP_G("gpio", gpio_grp_mt7628, MT7628_GPIO_MODE_MASK,
1, MT7628_GPIO_MODE_GPIO),
{ 0 }
};
MIPS: ralink: mt7620: Improve clock frequency detection The current code assumes that the peripheral clock always runs at 40MHz which is not true in all configuration. The peripheral clock can also use the reference clock instead of the fixed 40MHz rate. If the reference clock runs at a different rate, various peripheries are behaving incorrectly. Additionally, the currectly calculated system clock is also wrong. The actual value what the code computes is the rate of the DRAM which can be different from the system clock. Add new helper functions to get the rate of the different clocks and use the correct values for the registered clock devices. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5755/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-08-23 08:31:30 +02:00
static __init u32
mt7620_calc_rate(u32 ref_rate, u32 mul, u32 div)
{
u64 t;
t = ref_rate;
t *= mul;
do_div(t, div);
return t;
}
#define MHZ(x) ((x) * 1000 * 1000)
static __init unsigned long
mt7620_get_xtal_rate(void)
MIPS: ralink: adds support for MT7620 SoC family Add support code for mt7620 SOC. The code detects the SoC and registers the clk / pinmux settings. Signed-off-by: John Crispin <blogic@openwrt.org> Acked-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5177/
2013-03-21 17:49:02 +01:00
{
MIPS: ralink: mt7620: Improve clock frequency detection The current code assumes that the peripheral clock always runs at 40MHz which is not true in all configuration. The peripheral clock can also use the reference clock instead of the fixed 40MHz rate. If the reference clock runs at a different rate, various peripheries are behaving incorrectly. Additionally, the currectly calculated system clock is also wrong. The actual value what the code computes is the rate of the DRAM which can be different from the system clock. Add new helper functions to get the rate of the different clocks and use the correct values for the registered clock devices. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5755/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-08-23 08:31:30 +02:00
u32 reg;
reg = rt_sysc_r32(SYSC_REG_SYSTEM_CONFIG0);
if (reg & SYSCFG0_XTAL_FREQ_SEL)
return MHZ(40);
return MHZ(20);
}
static __init unsigned long
mt7620_get_periph_rate(unsigned long xtal_rate)
{
u32 reg;
reg = rt_sysc_r32(SYSC_REG_CLKCFG0);
if (reg & CLKCFG0_PERI_CLK_SEL)
return xtal_rate;
return MHZ(40);
}
MIPS: ralink: adds support for MT7620 SoC family Add support code for mt7620 SOC. The code detects the SoC and registers the clk / pinmux settings. Signed-off-by: John Crispin <blogic@openwrt.org> Acked-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5177/
2013-03-21 17:49:02 +01:00
MIPS: ralink: mt7620: Improve clock frequency detection The current code assumes that the peripheral clock always runs at 40MHz which is not true in all configuration. The peripheral clock can also use the reference clock instead of the fixed 40MHz rate. If the reference clock runs at a different rate, various peripheries are behaving incorrectly. Additionally, the currectly calculated system clock is also wrong. The actual value what the code computes is the rate of the DRAM which can be different from the system clock. Add new helper functions to get the rate of the different clocks and use the correct values for the registered clock devices. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5755/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-08-23 08:31:30 +02:00
static const u32 mt7620_clk_divider[] __initconst = { 2, 3, 4, 8 };
static __init unsigned long
mt7620_get_cpu_pll_rate(unsigned long xtal_rate)
{
u32 reg;
u32 mul;
u32 div;
reg = rt_sysc_r32(SYSC_REG_CPLL_CONFIG0);
if (reg & CPLL_CFG0_BYPASS_REF_CLK)
return xtal_rate;
if ((reg & CPLL_CFG0_SW_CFG) == 0)
return MHZ(600);
mul = (reg >> CPLL_CFG0_PLL_MULT_RATIO_SHIFT) &
CPLL_CFG0_PLL_MULT_RATIO_MASK;
mul += 24;
if (reg & CPLL_CFG0_LC_CURFCK)
mul *= 2;
div = (reg >> CPLL_CFG0_PLL_DIV_RATIO_SHIFT) &
CPLL_CFG0_PLL_DIV_RATIO_MASK;
WARN_ON(div >= ARRAY_SIZE(mt7620_clk_divider));
return mt7620_calc_rate(xtal_rate, mul, mt7620_clk_divider[div]);
}
static __init unsigned long
mt7620_get_pll_rate(unsigned long xtal_rate, unsigned long cpu_pll_rate)
{
u32 reg;
reg = rt_sysc_r32(SYSC_REG_CPLL_CONFIG1);
if (reg & CPLL_CFG1_CPU_AUX1)
return xtal_rate;
if (reg & CPLL_CFG1_CPU_AUX0)
return MHZ(480);
return cpu_pll_rate;
}
static __init unsigned long
mt7620_get_cpu_rate(unsigned long pll_rate)
{
u32 reg;
u32 mul;
u32 div;
reg = rt_sysc_r32(SYSC_REG_CPU_SYS_CLKCFG);
mul = reg & CPU_SYS_CLKCFG_CPU_FFRAC_MASK;
div = (reg >> CPU_SYS_CLKCFG_CPU_FDIV_SHIFT) &
CPU_SYS_CLKCFG_CPU_FDIV_MASK;
return mt7620_calc_rate(pll_rate, mul, div);
}
static const u32 mt7620_ocp_dividers[16] __initconst = {
[CPU_SYS_CLKCFG_OCP_RATIO_2] = 2,
[CPU_SYS_CLKCFG_OCP_RATIO_3] = 3,
[CPU_SYS_CLKCFG_OCP_RATIO_4] = 4,
[CPU_SYS_CLKCFG_OCP_RATIO_5] = 5,
[CPU_SYS_CLKCFG_OCP_RATIO_10] = 10,
};
static __init unsigned long
mt7620_get_dram_rate(unsigned long pll_rate)
{
MIPS: ralink: adds support for MT7620 SoC family Add support code for mt7620 SOC. The code detects the SoC and registers the clk / pinmux settings. Signed-off-by: John Crispin <blogic@openwrt.org> Acked-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5177/
2013-03-21 17:49:02 +01:00
if (dram_type == SYSCFG0_DRAM_TYPE_SDRAM)
MIPS: ralink: mt7620: Improve clock frequency detection The current code assumes that the peripheral clock always runs at 40MHz which is not true in all configuration. The peripheral clock can also use the reference clock instead of the fixed 40MHz rate. If the reference clock runs at a different rate, various peripheries are behaving incorrectly. Additionally, the currectly calculated system clock is also wrong. The actual value what the code computes is the rate of the DRAM which can be different from the system clock. Add new helper functions to get the rate of the different clocks and use the correct values for the registered clock devices. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5755/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-08-23 08:31:30 +02:00
return pll_rate / 4;
return pll_rate / 3;
}
static __init unsigned long
mt7620_get_sys_rate(unsigned long cpu_rate)
{
u32 reg;
u32 ocp_ratio;
u32 div;
reg = rt_sysc_r32(SYSC_REG_CPU_SYS_CLKCFG);
ocp_ratio = (reg >> CPU_SYS_CLKCFG_OCP_RATIO_SHIFT) &
CPU_SYS_CLKCFG_OCP_RATIO_MASK;
if (WARN_ON(ocp_ratio >= ARRAY_SIZE(mt7620_ocp_dividers)))
return cpu_rate;
div = mt7620_ocp_dividers[ocp_ratio];
if (WARN(!div, "invalid divider for OCP ratio %u", ocp_ratio))
return cpu_rate;
return cpu_rate / div;
}
void __init ralink_clk_init(void)
{
unsigned long xtal_rate;
unsigned long cpu_pll_rate;
unsigned long pll_rate;
unsigned long cpu_rate;
unsigned long sys_rate;
unsigned long dram_rate;
unsigned long periph_rate;
xtal_rate = mt7620_get_xtal_rate();
#define RFMT(label) label ":%lu.%03luMHz "
#define RINT(x) ((x) / 1000000)
#define RFRAC(x) (((x) / 1000) % 1000)
MIPS: ralink: add mt7628an support Signed-off-by: John Crispin <blogic@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/8031/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-10-08 23:30:24 +02:00
if (mt762x_soc == MT762X_SOC_MT7628AN) {
if (xtal_rate == MHZ(40))
cpu_rate = MHZ(580);
else
cpu_rate = MHZ(575);
dram_rate = sys_rate = cpu_rate / 3;
periph_rate = MHZ(40);
ralink_clk_add("10000d00.uartlite", periph_rate);
ralink_clk_add("10000e00.uartlite", periph_rate);
} else {
cpu_pll_rate = mt7620_get_cpu_pll_rate(xtal_rate);
pll_rate = mt7620_get_pll_rate(xtal_rate, cpu_pll_rate);
cpu_rate = mt7620_get_cpu_rate(pll_rate);
dram_rate = mt7620_get_dram_rate(pll_rate);
sys_rate = mt7620_get_sys_rate(cpu_rate);
periph_rate = mt7620_get_periph_rate(xtal_rate);
pr_debug(RFMT("XTAL") RFMT("CPU_PLL") RFMT("PLL"),
RINT(xtal_rate), RFRAC(xtal_rate),
RINT(cpu_pll_rate), RFRAC(cpu_pll_rate),
RINT(pll_rate), RFRAC(pll_rate));
ralink_clk_add("10000500.uart", periph_rate);
}
MIPS: ralink: mt7620: Improve clock frequency detection The current code assumes that the peripheral clock always runs at 40MHz which is not true in all configuration. The peripheral clock can also use the reference clock instead of the fixed 40MHz rate. If the reference clock runs at a different rate, various peripheries are behaving incorrectly. Additionally, the currectly calculated system clock is also wrong. The actual value what the code computes is the rate of the DRAM which can be different from the system clock. Add new helper functions to get the rate of the different clocks and use the correct values for the registered clock devices. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5755/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-08-23 08:31:30 +02:00
pr_debug(RFMT("CPU") RFMT("DRAM") RFMT("SYS") RFMT("PERIPH"),
RINT(cpu_rate), RFRAC(cpu_rate),
RINT(dram_rate), RFRAC(dram_rate),
RINT(sys_rate), RFRAC(sys_rate),
RINT(periph_rate), RFRAC(periph_rate));
#undef RFRAC
#undef RINT
#undef RFMT
MIPS: ralink: adds support for MT7620 SoC family Add support code for mt7620 SOC. The code detects the SoC and registers the clk / pinmux settings. Signed-off-by: John Crispin <blogic@openwrt.org> Acked-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5177/
2013-03-21 17:49:02 +01:00
ralink_clk_add("cpu", cpu_rate);
MIPS: ralink: mt7620: Improve clock frequency detection The current code assumes that the peripheral clock always runs at 40MHz which is not true in all configuration. The peripheral clock can also use the reference clock instead of the fixed 40MHz rate. If the reference clock runs at a different rate, various peripheries are behaving incorrectly. Additionally, the currectly calculated system clock is also wrong. The actual value what the code computes is the rate of the DRAM which can be different from the system clock. Add new helper functions to get the rate of the different clocks and use the correct values for the registered clock devices. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5755/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-08-23 08:31:30 +02:00
ralink_clk_add("10000100.timer", periph_rate);
MIPS: ralink: mt7620: Add wdt clock definition The watchdog driver of the SoC uses the clk API to get the clock associated with the watchdog device. However the MT7620 specific setup code does not register a clock for the watchdog device yet which leads to the following error: rt2880_wdt: probe of 10000120.watchdog failed with error -2 Register a clock device for the watchdog in order to avoid the error and make the watchdog usable. Signed-off-by: John Crispin <blogic@openwrt.org> Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5756/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-08-23 08:31:31 +02:00
ralink_clk_add("10000120.watchdog", periph_rate);
MIPS: ralink: mt7620: Add spi clock definition Register a clock device for the SPI block of the MT7620 SoC. The clock device will be used by the SPI host controller driver to determine the base clock of the controller. Signed-off-by: John Crispin <blogic@openwrt.org> Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5754/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-08-23 08:31:32 +02:00
ralink_clk_add("10000b00.spi", sys_rate);
MIPS: ralink: mt7620: Improve clock frequency detection The current code assumes that the peripheral clock always runs at 40MHz which is not true in all configuration. The peripheral clock can also use the reference clock instead of the fixed 40MHz rate. If the reference clock runs at a different rate, various peripheries are behaving incorrectly. Additionally, the currectly calculated system clock is also wrong. The actual value what the code computes is the rate of the DRAM which can be different from the system clock. Add new helper functions to get the rate of the different clocks and use the correct values for the registered clock devices. Signed-off-by: Gabor Juhos <juhosg@openwrt.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/5755/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2013-08-23 08:31:30 +02:00
ralink_clk_add("10000c00.uartlite", periph_rate);
MIPS: ralink: add support for MT7620n This is the small version of MT7620a. Signed-off-by: John Crispin <blogic@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/8030/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-07-27 09:23:36 +01:00
ralink_clk_add("10180000.wmac", xtal_rate);
MIPS: ralink: adds support for MT7620 SoC family Add support code for mt7620 SOC. The code detects the SoC and registers the clk / pinmux settings. Signed-off-by: John Crispin <blogic@openwrt.org> Acked-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5177/
2013-03-21 17:49:02 +01:00
}
void __init ralink_of_remap(void)
{
rt_sysc_membase = plat_of_remap_node("ralink,mt7620a-sysc");
rt_memc_membase = plat_of_remap_node("ralink,mt7620a-memc");
if (!rt_sysc_membase || !rt_memc_membase)
panic("Failed to remap core resources");
}
MIPS: ralink: add mt7628an support Signed-off-by: John Crispin <blogic@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/8031/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-10-08 23:30:24 +02:00
static __init void
mt7620_dram_init(struct ralink_soc_info *soc_info)
{
switch (dram_type) {
case SYSCFG0_DRAM_TYPE_SDRAM:
pr_info("Board has SDRAM\n");
soc_info->mem_size_min = MT7620_SDRAM_SIZE_MIN;
soc_info->mem_size_max = MT7620_SDRAM_SIZE_MAX;
break;
case SYSCFG0_DRAM_TYPE_DDR1:
pr_info("Board has DDR1\n");
soc_info->mem_size_min = MT7620_DDR1_SIZE_MIN;
soc_info->mem_size_max = MT7620_DDR1_SIZE_MAX;
break;
case SYSCFG0_DRAM_TYPE_DDR2:
pr_info("Board has DDR2\n");
soc_info->mem_size_min = MT7620_DDR2_SIZE_MIN;
soc_info->mem_size_max = MT7620_DDR2_SIZE_MAX;
break;
default:
BUG();
}
}
static __init void
mt7628_dram_init(struct ralink_soc_info *soc_info)
{
switch (dram_type) {
case SYSCFG0_DRAM_TYPE_DDR1_MT7628:
pr_info("Board has DDR1\n");
soc_info->mem_size_min = MT7620_DDR1_SIZE_MIN;
soc_info->mem_size_max = MT7620_DDR1_SIZE_MAX;
break;
case SYSCFG0_DRAM_TYPE_DDR2_MT7628:
pr_info("Board has DDR2\n");
soc_info->mem_size_min = MT7620_DDR2_SIZE_MIN;
soc_info->mem_size_max = MT7620_DDR2_SIZE_MAX;
break;
default:
BUG();
}
}
MIPS: ralink: adds support for MT7620 SoC family Add support code for mt7620 SOC. The code detects the SoC and registers the clk / pinmux settings. Signed-off-by: John Crispin <blogic@openwrt.org> Acked-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5177/
2013-03-21 17:49:02 +01:00
void prom_soc_init(struct ralink_soc_info *soc_info)
{
void __iomem *sysc = (void __iomem *) KSEG1ADDR(MT7620_SYSC_BASE);
unsigned char *name = NULL;
u32 n0;
u32 n1;
u32 rev;
u32 cfg0;
MIPS: ralink: add verbose pmu info Print the PMU and LDO settings on boot. Signed-off-by: John Crispin <blogic@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/7999/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-07-27 09:16:50 +01:00
u32 pmu0;
u32 pmu1;
MIPS: ralink: add support for MT7620n This is the small version of MT7620a. Signed-off-by: John Crispin <blogic@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/8030/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-07-27 09:23:36 +01:00
u32 bga;
MIPS: ralink: adds support for MT7620 SoC family Add support code for mt7620 SOC. The code detects the SoC and registers the clk / pinmux settings. Signed-off-by: John Crispin <blogic@openwrt.org> Acked-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5177/
2013-03-21 17:49:02 +01:00
n0 = __raw_readl(sysc + SYSC_REG_CHIP_NAME0);
n1 = __raw_readl(sysc + SYSC_REG_CHIP_NAME1);
MIPS: ralink: add support for MT7620n This is the small version of MT7620a. Signed-off-by: John Crispin <blogic@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/8030/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-07-27 09:23:36 +01:00
rev = __raw_readl(sysc + SYSC_REG_CHIP_REV);
bga = (rev >> CHIP_REV_PKG_SHIFT) & CHIP_REV_PKG_MASK;
MIPS: ralink: adds support for MT7620 SoC family Add support code for mt7620 SOC. The code detects the SoC and registers the clk / pinmux settings. Signed-off-by: John Crispin <blogic@openwrt.org> Acked-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5177/
2013-03-21 17:49:02 +01:00
MIPS: ralink: add mt7628an support Signed-off-by: John Crispin <blogic@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/8031/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-10-08 23:30:24 +02:00
if (n0 == MT7620_CHIP_NAME0 && n1 == MT7620_CHIP_NAME1) {
if (bga) {
mt762x_soc = MT762X_SOC_MT7620A;
name = "MT7620A";
soc_info->compatible = "ralink,mt7620a-soc";
} else {
mt762x_soc = MT762X_SOC_MT7620N;
name = "MT7620N";
soc_info->compatible = "ralink,mt7620n-soc";
MIPS: ralink: add support for MT7620n This is the small version of MT7620a. Signed-off-by: John Crispin <blogic@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/8030/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-07-27 09:23:36 +01:00
#ifdef CONFIG_PCI
MIPS: ralink: add mt7628an support Signed-off-by: John Crispin <blogic@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/8031/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-10-08 23:30:24 +02:00
panic("mt7620n is only supported for non pci kernels");
MIPS: ralink: add support for MT7620n This is the small version of MT7620a. Signed-off-by: John Crispin <blogic@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/8030/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-07-27 09:23:36 +01:00
#endif
MIPS: ralink: add mt7628an support Signed-off-by: John Crispin <blogic@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/8031/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-10-08 23:30:24 +02:00
}
} else if (n0 == MT7620_CHIP_NAME0 && n1 == MT7628_CHIP_NAME1) {
mt762x_soc = MT762X_SOC_MT7628AN;
name = "MT7628AN";
soc_info->compatible = "ralink,mt7628an-soc";
} else {
panic("mt762x: unknown SoC, n0:%08x n1:%08x\n", n0, n1);
MIPS: ralink: adds support for MT7620 SoC family Add support code for mt7620 SOC. The code detects the SoC and registers the clk / pinmux settings. Signed-off-by: John Crispin <blogic@openwrt.org> Acked-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5177/
2013-03-21 17:49:02 +01:00
}
snprintf(soc_info->sys_type, RAMIPS_SYS_TYPE_LEN,
"Ralink %s ver:%u eco:%u",
name,
(rev >> CHIP_REV_VER_SHIFT) & CHIP_REV_VER_MASK,
(rev & CHIP_REV_ECO_MASK));
cfg0 = __raw_readl(sysc + SYSC_REG_SYSTEM_CONFIG0);
dram_type = (cfg0 >> SYSCFG0_DRAM_TYPE_SHIFT) & SYSCFG0_DRAM_TYPE_MASK;
MIPS: ralink: add memory definition for MT7620 Populate struct soc_info with the data that describes our RAM window. Signed-off-by: John Crispin <blogic@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5183/
2013-04-14 09:55:29 +02:00
soc_info->mem_base = MT7620_DRAM_BASE;
MIPS: ralink: add mt7628an support Signed-off-by: John Crispin <blogic@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/8031/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-10-08 23:30:24 +02:00
if (mt762x_soc == MT762X_SOC_MT7628AN)
mt7628_dram_init(soc_info);
else
mt7620_dram_init(soc_info);
MIPS: ralink: add verbose pmu info Print the PMU and LDO settings on boot. Signed-off-by: John Crispin <blogic@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/7999/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-07-27 09:16:50 +01:00
pmu0 = __raw_readl(sysc + PMU0_CFG);
pmu1 = __raw_readl(sysc + PMU1_CFG);
pr_info("Analog PMU set to %s control\n",
(pmu0 & PMU_SW_SET) ? ("sw") : ("hw"));
pr_info("Digital PMU set to %s control\n",
(pmu1 & DIG_SW_SEL) ? ("sw") : ("hw"));
MIPS: ralink: add mt7628an support Signed-off-by: John Crispin <blogic@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/8031/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2014-10-08 23:30:24 +02:00
if (mt762x_soc == MT762X_SOC_MT7628AN)
rt2880_pinmux_data = mt7628an_pinmux_data;
else
rt2880_pinmux_data = mt7620a_pinmux_data;
MIPS: ralink: adds support for MT7620 SoC family Add support code for mt7620 SOC. The code detects the SoC and registers the clk / pinmux settings. Signed-off-by: John Crispin <blogic@openwrt.org> Acked-by: Gabor Juhos <juhosg@openwrt.org> Patchwork: http://patchwork.linux-mips.org/patch/5177/
2013-03-21 17:49:02 +01:00
}
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