[PATCH v7 21/42] ARM: davinci: da830: add new clock init using common clock framework
From: David Lechner <david@lechnology.com>
Date: 2018-02-19 20:23:13
Also in:
linux-arm-kernel, linux-clk, lkml
Subsystem:
arm port, the rest, ti davinci machine support · Maintainers:
Russell King, Linus Torvalds, Bartosz Golaszewski
This adds the new board-specific clock init in mach-davinci/da830.c using the new common clock framework drivers. The #ifdefs are needed to prevent compile errors until the entire ARCH_DAVINCI is converted. Also clean up the #includes since we are adding some here. Signed-off-by: David Lechner <david@lechnology.com> --- v7 changes: - add clock platform device declarations - register platform devices instead of registering clocks directly - clkdev lookup is moved to drivers/clk - add davinci prefix to commit description v6 changes: - add blank lines between function calls - include da8xx_register_cfgchip() arch/arm/mach-davinci/board-da830-evm.c | 2 + arch/arm/mach-davinci/da830.c | 77 +++++++++++++++++++++++++++--- arch/arm/mach-davinci/include/mach/da8xx.h | 1 + 3 files changed, 74 insertions(+), 6 deletions(-)
diff --git a/arch/arm/mach-davinci/board-da830-evm.c b/arch/arm/mach-davinci/board-da830-evm.c
index 004f9c8..3973124 100644
--- a/arch/arm/mach-davinci/board-da830-evm.c
+++ b/arch/arm/mach-davinci/board-da830-evm.c@@ -551,6 +551,8 @@ static __init void da830_evm_init(void) struct davinci_soc_info *soc_info = &davinci_soc_info; int ret; + da830_register_clocks(); + ret = da830_register_gpio(); if (ret) pr_warn("%s: GPIO init failed: %d\n", __func__, ret);
diff --git a/arch/arm/mach-davinci/da830.c b/arch/arm/mach-davinci/da830.c
index 0b17e5a..c1c2604 100644
--- a/arch/arm/mach-davinci/da830.c
+++ b/arch/arm/mach-davinci/da830.c@@ -8,23 +8,26 @@ * is licensed "as is" without any warranty of any kind, whether express * or implied. */ +#include <linux/clk-provider.h> #include <linux/gpio.h> #include <linux/init.h> -#include <linux/clk.h> #include <linux/platform_data/gpio-davinci.h> #include <asm/mach/map.h> -#include "psc.h" -#include <mach/irqs.h> -#include <mach/cputype.h> #include <mach/common.h> -#include <mach/time.h> +#include <mach/cputype.h> #include <mach/da8xx.h> +#include <mach/irqs.h> +#include <mach/time.h> -#include "clock.h" #include "mux.h" +#ifndef CONFIG_COMMON_CLK +#include "clock.h" +#include "psc.h" +#endif + /* Offsets of the 8 compare registers on the da830 */ #define DA830_CMP12_0 0x60 #define DA830_CMP12_1 0x64
@@ -37,6 +40,7 @@ #define DA830_REF_FREQ 24000000 +#ifndef CONFIG_COMMON_CLK static struct pll_data pll0_data = { .num = 1, .phys_base = DA8XX_PLL0_BASE,
@@ -432,6 +436,7 @@ static struct clk_lookup da830_clks[] = { CLK(NULL, "rmii", &rmii_clk), CLK(NULL, NULL, NULL), }; +#endif /* * Device specific mux setup
@@ -1223,6 +1228,66 @@ void __init da830_init(void) void __init da830_init_time(void) { +#ifdef CONFIG_COMMON_CLK + struct clk *clk; + + clk = clk_register_fixed_rate(NULL, "ref_clk", NULL, 0, DA830_REF_FREQ); + + davinci_timer_init(clk); +#else davinci_clk_init(da830_clks); davinci_timer_init(&timerp64_0_clk); +#endif +} + +static struct resource da830_pll_resources[] = { + { + .start = DA8XX_PLL0_BASE, + .end = DA8XX_PLL0_BASE + SZ_4K - 1, + .flags = IORESOURCE_MEM, + }, +}; + +static struct platform_device da830_pll_device = { + .name = "da830-pll", + .id = -1, + .resource = da830_pll_resources, + .num_resources = ARRAY_SIZE(da830_pll_resources), +}; + +static struct resource da830_psc0_resources[] = { + { + .start = DA8XX_PSC0_BASE, + .end = DA8XX_PSC0_BASE + SZ_4K - 1, + .flags = IORESOURCE_MEM, + }, +}; + +static struct platform_device da830_psc0_device = { + .name = "da830-psc0", + .id = -1, + .resource = da830_psc0_resources, + .num_resources = ARRAY_SIZE(da830_psc0_resources), +}; + +static struct resource da830_psc1_resources[] = { + { + .start = DA8XX_PSC1_BASE, + .end = DA8XX_PSC1_BASE + SZ_4K - 1, + .flags = IORESOURCE_MEM, + }, +}; + +static struct platform_device da830_psc1_device = { + .name = "da830-psc1", + .id = -1, + .resource = da830_psc1_resources, + .num_resources = ARRAY_SIZE(da830_psc1_resources), +}; + +void __init da830_register_clocks(void) +{ + platform_device_register(&da830_pll_device); + platform_device_register(&da830_psc0_device); + platform_device_register(&da830_psc1_device); }
diff --git a/arch/arm/mach-davinci/include/mach/da8xx.h b/arch/arm/mach-davinci/include/mach/da8xx.h
index 9fd6d01..64861ac 100644
--- a/arch/arm/mach-davinci/include/mach/da8xx.h
+++ b/arch/arm/mach-davinci/include/mach/da8xx.h@@ -89,6 +89,7 @@ extern unsigned int da850_max_speed; void da830_init(void); void da830_init_time(void); +void da830_register_clocks(void); void da850_init(void); void da850_init_time(void);
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2.7.4