iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

clk: davinci: Add platform information for TI DA830 PSC

Browse Source 
This adds platform-specific declarations for the PSC clocks on TI DA830/
OMAP-L137/AM17XX SoCs.

Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
David Lechner 2018-03-15 21:52:27 -05:00 committed by Stephen Boyd
parent c6ed4d734b
commit c2952e271b
4 changed files with 122 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
drivers/clk/davinci/Makefile
View File

@ -10,4 +10,5 @@ obj-$(CONFIG_ARCH_DAVINCI_DM644x) += pll-dm644x.o
obj-$(CONFIG_ARCH_DAVINCI_DM646x) += pll-dm646x.o
obj-y += psc.o
obj-$(CONFIG_ARCH_DAVINCI_DA830) += psc-da830.o
endif

116
drivers/clk/davinci/psc-da830.c Normal file
View File

@ -0,0 +1,116 @@
// SPDX-License-Identifier: GPL-2.0
/*
* PSC clock descriptions for TI DA830/OMAP-L137/AM17XX
*
* Copyright (C) 2018 David Lechner <david@lechnology.com>
*/
#include <linux/clk-provider.h>
#include <linux/clk.h>
#include <linux/clkdev.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include "psc.h"
LPSC_CLKDEV1(spi0_clkdev, NULL, "spi_davinci.0");
LPSC_CLKDEV1(mmcsd_clkdev, NULL, "da830-mmc.0");
LPSC_CLKDEV1(uart0_clkdev, NULL, "serial8250.0");
static const struct davinci_lpsc_clk_info da830_psc0_info[] = {
LPSC(0, 0, tpcc, pll0_sysclk2, NULL, LPSC_ALWAYS_ENABLED),
LPSC(1, 0, tptc0, pll0_sysclk2, NULL, LPSC_ALWAYS_ENABLED),
LPSC(2, 0, tptc1, pll0_sysclk2, NULL, LPSC_ALWAYS_ENABLED),
LPSC(3, 0, aemif, pll0_sysclk3, NULL, LPSC_ALWAYS_ENABLED),
LPSC(4, 0, spi0, pll0_sysclk2, spi0_clkdev, 0),
LPSC(5, 0, mmcsd, pll0_sysclk2, mmcsd_clkdev, 0),
LPSC(6, 0, aintc, pll0_sysclk4, NULL, LPSC_ALWAYS_ENABLED),
LPSC(7, 0, arm_rom, pll0_sysclk2, NULL, LPSC_ALWAYS_ENABLED),
LPSC(8, 0, secu_mgr, pll0_sysclk4, NULL, LPSC_ALWAYS_ENABLED),
LPSC(9, 0, uart0, pll0_sysclk2, uart0_clkdev, 0),
LPSC(10, 0, scr0_ss, pll0_sysclk2, NULL, LPSC_ALWAYS_ENABLED),
LPSC(11, 0, scr1_ss, pll0_sysclk2, NULL, LPSC_ALWAYS_ENABLED),
LPSC(12, 0, scr2_ss, pll0_sysclk2, NULL, LPSC_ALWAYS_ENABLED),
LPSC(13, 0, pruss, pll0_sysclk2, NULL, LPSC_ALWAYS_ENABLED),
LPSC(14, 0, arm, pll0_sysclk6, NULL, LPSC_ALWAYS_ENABLED),
{ }
};
static int da830_psc0_init(struct device *dev, void __iomem *base)
{
return davinci_psc_register_clocks(dev, da830_psc0_info, 16, base);
}
static struct clk_bulk_data da830_psc0_parent_clks[] = {
{ .id = "pll0_sysclk2" },
{ .id = "pll0_sysclk3" },
{ .id = "pll0_sysclk4" },
{ .id = "pll0_sysclk6" },
};
const struct davinci_psc_init_data da830_psc0_init_data = {
.parent_clks = da830_psc0_parent_clks,
.num_parent_clks = ARRAY_SIZE(da830_psc0_parent_clks),
.psc_init = &da830_psc0_init,
};
LPSC_CLKDEV2(usb0_clkdev, NULL, "musb-da8xx",
NULL, "cppi41-dmaengine");
LPSC_CLKDEV1(usb1_clkdev, NULL, "ohci-da8xx");
/* REVISIT: gpio-davinci.c should be modified to drop con_id */
LPSC_CLKDEV1(gpio_clkdev, "gpio", NULL);
LPSC_CLKDEV2(emac_clkdev, NULL, "davinci_emac.1",
"fck", "davinci_mdio.0");
LPSC_CLKDEV1(mcasp0_clkdev, NULL, "davinci-mcasp.0");
LPSC_CLKDEV1(mcasp1_clkdev, NULL, "davinci-mcasp.1");
LPSC_CLKDEV1(mcasp2_clkdev, NULL, "davinci-mcasp.2");
LPSC_CLKDEV1(spi1_clkdev, NULL, "spi_davinci.1");
LPSC_CLKDEV1(i2c1_clkdev, NULL, "i2c_davinci.2");
LPSC_CLKDEV1(uart1_clkdev, NULL, "serial8250.1");
LPSC_CLKDEV1(uart2_clkdev, NULL, "serial8250.2");
LPSC_CLKDEV1(lcdc_clkdev, "fck", "da8xx_lcdc.0");
LPSC_CLKDEV2(pwm_clkdev, "fck", "ehrpwm.0",
"fck", "ehrpwm.1");
LPSC_CLKDEV3(ecap_clkdev, "fck", "ecap.0",
"fck", "ecap.1",
"fck", "ecap.2");
LPSC_CLKDEV2(eqep_clkdev, NULL, "eqep.0",
NULL, "eqep.1");
static const struct davinci_lpsc_clk_info da830_psc1_info[] = {
LPSC(1, 0, usb0, pll0_sysclk2, usb0_clkdev, 0),
LPSC(2, 0, usb1, pll0_sysclk4, usb1_clkdev, 0),
LPSC(3, 0, gpio, pll0_sysclk4, gpio_clkdev, 0),
LPSC(5, 0, emac, pll0_sysclk4, emac_clkdev, 0),
LPSC(6, 0, emif3, pll0_sysclk5, NULL, LPSC_ALWAYS_ENABLED),
LPSC(7, 0, mcasp0, pll0_sysclk2, mcasp0_clkdev, 0),
LPSC(8, 0, mcasp1, pll0_sysclk2, mcasp1_clkdev, 0),
LPSC(9, 0, mcasp2, pll0_sysclk2, mcasp2_clkdev, 0),
LPSC(10, 0, spi1, pll0_sysclk2, spi1_clkdev, 0),
LPSC(11, 0, i2c1, pll0_sysclk4, i2c1_clkdev, 0),
LPSC(12, 0, uart1, pll0_sysclk2, uart1_clkdev, 0),
LPSC(13, 0, uart2, pll0_sysclk2, uart2_clkdev, 0),
LPSC(16, 0, lcdc, pll0_sysclk2, lcdc_clkdev, 0),
LPSC(17, 0, pwm, pll0_sysclk2, pwm_clkdev, 0),
LPSC(20, 0, ecap, pll0_sysclk2, ecap_clkdev, 0),
LPSC(21, 0, eqep, pll0_sysclk2, eqep_clkdev, 0),
{ }
};
static int da830_psc1_init(struct device *dev, void __iomem *base)
{
return davinci_psc_register_clocks(dev, da830_psc1_info, 32, base);
}
static struct clk_bulk_data da830_psc1_parent_clks[] = {
{ .id = "pll0_sysclk2" },
{ .id = "pll0_sysclk4" },
{ .id = "pll0_sysclk5" },
};
const struct davinci_psc_init_data da830_psc1_init_data = {
.parent_clks = da830_psc1_parent_clks,
.num_parent_clks = ARRAY_SIZE(da830_psc1_parent_clks),
.psc_init = &da830_psc1_init,
};

2
drivers/clk/davinci/psc.c
View File

@ -486,6 +486,8 @@ static const struct of_device_id davinci_psc_of_match[] = {
};
static const struct platform_device_id davinci_psc_id_table[] = {
{ .name = "da830-psc0", .driver_data = (kernel_ulong_t)&da830_psc0_init_data },
{ .name = "da830-psc1", .driver_data = (kernel_ulong_t)&da830_psc1_init_data },
{ }
};

3
drivers/clk/davinci/psc.h
View File

@ -94,4 +94,7 @@ struct davinci_psc_init_data {
int (*psc_init)(struct device *dev, void __iomem *base);
};
extern const struct davinci_psc_init_data da830_psc0_init_data;
extern const struct davinci_psc_init_data da830_psc1_init_data;
#endif /* __CLK_DAVINCI_PSC_H__ */