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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>
This commit is contained in:
Guennadi Liakhovetski 2013-04-05 12:00:38 +02:00 committed by Simon Horman
parent 73107925f4
commit d23473828c
2 changed files with 7 additions and 0 deletions
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2
arch/arm/mach-shmobile/Kconfig
View File

@ -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

5
arch/arm/mach-shmobile/setup-sh73a0.c
View File

@ -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 = {