[PATCH v4 5/5] ARM: EXYNOS: cpuidle: allow driver usage on Exynos4x12 SoCs

Bartlomiej Zolnierkiewicz b.zolnierkie at samsung.com
Mon Aug 4 10:45:45 PDT 2014


Register cpuidle platform device on Exynos4x12 SoCs allowing EXYNOS
cpuidle driver usage on these SoCs.

AFTR mode reduces power consumption on Trats2 board (Exynos4412 SoC
with secure firmware enabled) by ~12% when EXYNOS cpuidle driver is
enabled (in both cases the default exynos_defconfig config is used
and CPU1-3 are offlined).

Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie at samsung.com>
Acked-by: Kyungmin Park <kyungmin.park at samsung.com>
---
 arch/arm/mach-exynos/exynos.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c
index 6a24e11..15cf86d 100644
--- a/arch/arm/mach-exynos/exynos.c
+++ b/arch/arm/mach-exynos/exynos.c
@@ -317,7 +317,9 @@ static void __init exynos_dt_machine_init(void)
 		exynos_sysram_init();
 
 	if (of_machine_is_compatible("samsung,exynos4210") ||
-			of_machine_is_compatible("samsung,exynos5250"))
+	    of_machine_is_compatible("samsung,exynos4212") ||
+	    of_machine_is_compatible("samsung,exynos4412") ||
+	    of_machine_is_compatible("samsung,exynos5250"))
 		platform_device_register(&exynos_cpuidle);
 
 	platform_device_register_simple("exynos-cpufreq", -1, NULL, 0);
-- 
1.8.2.3




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