Am 10.07.2014 15:49, schrieb Kukjin Kim:
> Pankaj Dubey wrote:
>>
>> Add support for mapping Samsung Power Management Unit (PMU)
>> base address from device tree.
>>
>> Signed-off-by: Pankaj Dubey <pankaj.dubey@xxxxxxxxxxx>
>> Reviewed-by: Tomasz Figa <t.figa@xxxxxxxxxxx>
>> ---
>> arch/arm/mach-exynos/common.h | 1 +
>> arch/arm/mach-exynos/exynos.c | 37 +++++++++++++++++++++++++++++++++++++
>> 2 files changed, 38 insertions(+)
>>
>> diff --git a/arch/arm/mach-exynos/common.h b/arch/arm/mach-exynos/common.h
>> index 152b464..f8daa9c 100644
>> --- a/arch/arm/mach-exynos/common.h
>> +++ b/arch/arm/mach-exynos/common.h
>> @@ -113,6 +113,7 @@ IS_SAMSUNG_CPU(exynos5800, EXYNOS5800_SOC_ID, EXYNOS5_SOC_MASK)
>>
>> extern void __iomem *sysram_ns_base_addr;
>> extern void __iomem *sysram_base_addr;
>> +extern void __iomem *pmu_base_addr;
>> void exynos_sysram_init(void);
>>
>> void exynos_firmware_init(void);
>> diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c
>> index 186f35d..173aac8 100644
>> --- a/arch/arm/mach-exynos/exynos.c
>> +++ b/arch/arm/mach-exynos/exynos.c
>> @@ -19,6 +19,7 @@
>> #include <linux/of_platform.h>
>> #include <linux/platform_device.h>
>> #include <linux/pm_domain.h>
>> +#include <linux/irqchip.h>
>>
>> #include <asm/cacheflush.h>
>> #include <asm/hardware/cache-l2x0.h>
>> @@ -31,6 +32,8 @@
>> #include "regs-pmu.h"
>> #include "regs-sys.h"
>>
>> +void __iomem *pmu_base_addr;
>> +
>> static struct map_desc exynos4_iodesc[] __initdata = {
>> {
>> .virtual = (unsigned long)S3C_VA_SYS,
>> @@ -253,6 +256,39 @@ static void __init exynos_init_io(void)
>> exynos_map_io();
>> }
>>
>> +static const struct of_device_id exynos_dt_pmu_match[] = {
>> + { .compatible = "samsung,exynos3250-pmu" },
>> + { .compatible = "samsung,exynos4210-pmu" },
>> + { .compatible = "samsung,exynos4212-pmu" },
>> + { .compatible = "samsung,exynos4412-pmu" },
>> + { .compatible = "samsung,exynos5250-pmu" },
>> + { .compatible = "samsung,exynos5420-pmu" },
>> + { /*sentinel*/ },
>> +};
>> +
>> +static void exynos_map_pmu(void)
>> +{
>> + struct device_node *np;
>> +
>> + np = of_find_matching_node(NULL, exynos_dt_pmu_match);
>> + if (np)
>> + pmu_base_addr = of_iomap(np, 0);
>> +
>> + if (!pmu_base_addr)
>> + panic("failed to find exynos pmu register\n");
>> +}
>> +
>> +static void __init exynos_init_irq(void)
>> +{
>> + irqchip_init();
>> + /*
>> + * Since platsmp.c needs pmu base address by the time
>> + * DT is not unflatten so we can't use DT APIs before
Either "Since platsmp.c needs ... unflattened, we can't ..."
or "platsmp.c needs ... unflattened, so we can't ..."
>> + * init_irq
>> + */
>> + exynos_map_pmu();
>> +}
>> +
>> static void __init exynos_dt_machine_init(void)
>> {
>> struct device_node *i2c_np;
>> @@ -336,6 +372,7 @@ DT_MACHINE_START(EXYNOS_DT, "SAMSUNG EXYNOS (Flattened Device Tree)")
>> .smp = smp_ops(exynos_smp_ops),
>> .map_io = exynos_init_io,
>> .init_early = exynos_firmware_init,
>> + .init_irq = exynos_init_irq,
>> .init_machine = exynos_dt_machine_init,
>> .init_late = exynos_init_late,
>> .dt_compat = exynos_dt_compat,
>> --
>> 1.7.9.5
>
> Looks good to me, will apply.
Unfortunately this broke the boot on ODROID-XU: Neither is there a
exynos_dt_pmu_match[] entry for 5410 nor is such a node defined in
exynos5410.dtsi. Not having access to a TRM, should 5410 get a node like
5420? Might SoCs beyond 5420 also require changes?
Regards,
Andreas
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