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authorBartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>2015-03-18 16:09:57 +0300
committerKukjin Kim <kgene@kernel.org>2015-06-05 20:17:57 +0300
commitaf9971144dde808338919cb4f3849ea2ac60739f (patch)
tree99b42bff1f28ecdf201a547bbd0a2dc996a95583 /arch/arm/mach-exynos/exynos.c
parent1225ad72866b440574a22372b9edceb035632f2b (diff)
downloadlinux-af9971144dde808338919cb4f3849ea2ac60739f.tar.xz
ARM: EXYNOS: add coupled cpuidle support for Exynos3250
The following patch adds coupled cpuidle support for Exynos3250 to an existing cpuidle-exynos driver. As a result it enables AFTR mode to be used by default on Exynos3250 without the need to hot unplug CPU1 first. The detailed changelog: - use exynos_[get,set]_boot_addr() in cpuidle-exynos.c and then make cpu_boot_reg_base() static - use exynos_core_restart() in exynos_cpu0_enter_aftr() - add missing smp_rmb() to exynos_cpu0_enter_aftr() (to make the code in-sync with the platform SMP code) - add call_firmware_op(cpu_boot, 1) to exynos_cpu0_enter_aftr() - use dsb_sev() instead of IPI wakeup for Exynos3250 in exynos_cpu0_enter_aftr() - add CPU0 vs CPU1 synchronization based on S5P_PMU_SPARE2 register for Exynos3250 to cpuidle-exynos.c - add flush_cache_all() for CPU1/0 before powerdown/AFTR for Exynos3250 to exynos_wfi_finisher()/exynos_do_idle() Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Daniel Lezcano <daniel.lezcano@linaro.org> Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> Signed-off-by: Kukjin Kim <kgene@kernel.org>
Diffstat (limited to 'arch/arm/mach-exynos/exynos.c')
-rw-r--r--arch/arm/mach-exynos/exynos.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c
index 5917a30eee33..4bd8b7653817 100644
--- a/arch/arm/mach-exynos/exynos.c
+++ b/arch/arm/mach-exynos/exynos.c
@@ -234,7 +234,8 @@ static void __init exynos_dt_machine_init(void)
exynos_sysram_init();
#if defined(CONFIG_SMP) && defined(CONFIG_ARM_EXYNOS_CPUIDLE)
- if (of_machine_is_compatible("samsung,exynos4210"))
+ if (of_machine_is_compatible("samsung,exynos4210") ||
+ of_machine_is_compatible("samsung,exynos3250"))
exynos_cpuidle.dev.platform_data = &cpuidle_coupled_exynos_data;
#endif
if (of_machine_is_compatible("samsung,exynos4210") ||