| From 70692e7ed7edd4cc844340df49509af13be76119 Mon Sep 17 00:00:00 2001 |
| From: Guennadi Liakhovetski <g.liakhovetski@gmx.de> |
| Date: Fri, 5 Apr 2013 12:00:38 +0200 |
| Subject: ARM: shmobile: sh73a0: add CPUFreq support |
| |
| This patch enables the use of the generic cpufreq-cpu0 driver on sh73a0. |
| Providing a regulator, a list of OPPs in DT, combined with a virtual |
| cpufreq-cpu0 platform device and a clock, attached to it is everything, |
| the cpufreq-cpu0 driver needs. The first sh73a0 platform, implementing |
| such CPUFreq support is kzm9g-reference. |
| |
| Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com> |
| Signed-off-by: Simon Horman <horms+renesas@verge.net.au> |
| (cherry picked from commit d23473828c1188805c9e0b2a2e5be158d07ce7de) |
| Signed-off-by: Simon Horman <horms+renesas@verge.net.au> |
| --- |
| arch/arm/mach-shmobile/Kconfig | 2 ++ |
| arch/arm/mach-shmobile/setup-sh73a0.c | 5 +++++ |
| 2 files changed, 7 insertions(+) |
| |
| diff --git a/arch/arm/mach-shmobile/Kconfig b/arch/arm/mach-shmobile/Kconfig |
| index 7a927839..b542d00d 100644 |
| --- a/arch/arm/mach-shmobile/Kconfig |
| +++ b/arch/arm/mach-shmobile/Kconfig |
| @@ -184,6 +184,8 @@ config MACH_KZM9D |
| config MACH_KZM9G |
| bool "KZM-A9-GT board" |
| depends on ARCH_SH73A0 |
| + select ARCH_HAS_CPUFREQ |
| + select ARCH_HAS_OPP |
| select ARCH_REQUIRE_GPIOLIB |
| select REGULATOR_FIXED_VOLTAGE if REGULATOR |
| select SND_SOC_AK4642 if SND_SIMPLE_CARD |
| diff --git a/arch/arm/mach-shmobile/setup-sh73a0.c b/arch/arm/mach-shmobile/setup-sh73a0.c |
| index 35d512a4..127891ab 100644 |
| --- a/arch/arm/mach-shmobile/setup-sh73a0.c |
| +++ b/arch/arm/mach-shmobile/setup-sh73a0.c |
| @@ -963,6 +963,8 @@ static const struct of_dev_auxdata sh73a0_auxdata_lookup[] __initconst = { |
| |
| void __init sh73a0_add_standard_devices_dt(void) |
| { |
| + struct platform_device_info devinfo = { .name = "cpufreq-cpu0", .id = -1, }; |
| + |
| /* clocks are setup late during boot in the case of DT */ |
| sh73a0_clock_init(); |
| |
| @@ -970,6 +972,9 @@ void __init sh73a0_add_standard_devices_dt(void) |
| ARRAY_SIZE(sh73a0_devices_dt)); |
| of_platform_populate(NULL, of_default_bus_match_table, |
| sh73a0_auxdata_lookup, NULL); |
| + |
| + /* Instantiate cpufreq-cpu0 */ |
| + platform_device_register_full(&devinfo); |
| } |
| |
| static const char *sh73a0_boards_compat_dt[] __initdata = { |
| -- |
| 1.8.4.3.gca3854a |
| |
