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| author | Guennadi Liakhovetski <g.liakhovetski@gmx.de> | 2013-04-05 14:00:38 +0400 |
|---|---|---|
| committer | Simon Horman <horms+renesas@verge.net.au> | 2013-06-07 09:24:51 +0400 |
| commit | d23473828c1188805c9e0b2a2e5be158d07ce7de (patch) | |
| tree | 43cfe225794102b97223333c00cfc9f2cf8fc315 /arch | |
| parent | 73107925f4b45b81ea4732475280502fefd35efa (diff) | |
| download | linux-d23473828c1188805c9e0b2a2e5be158d07ce7de.tar.xz | |
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-shmobile/Kconfig | 2 | ||||
| -rw-r--r-- | arch/arm/mach-shmobile/setup-sh73a0.c | 5 |
2 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/Kconfig b/arch/arm/mach-shmobile/Kconfig index 52e8c6ebc2b4..f871f2a65e73 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 3bc33a590b72..3acb45af503f 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 = { |