From: Guennadi Liakhovetski Date: Fri, 5 Apr 2013 10:00:38 +0000 (+0200) Subject: ARM: shmobile: sh73a0: add CPUFreq support X-Git-Tag: next-20130527~8^2^5~5 X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=e3444ecc3215d7fb7ff0eaf424ddd20d15a2f69c;p=karo-tx-linux.git 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 Signed-off-by: Simon Horman --- diff --git a/arch/arm/mach-shmobile/Kconfig b/arch/arm/mach-shmobile/Kconfig index 1a517e2fe449..7cfb9d142e71 100644 --- a/arch/arm/mach-shmobile/Kconfig +++ b/arch/arm/mach-shmobile/Kconfig @@ -169,6 +169,8 @@ 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 f8f4261edb9f..88e6ea060014 100644 --- a/arch/arm/mach-shmobile/setup-sh73a0.c +++ b/arch/arm/mach-shmobile/setup-sh73a0.c @@ -1003,6 +1003,8 @@ 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(); @@ -1010,6 +1012,9 @@ 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 = {