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

Message ID 1407174345-31213-6-git-send-email-b.zolnierkie@samsung.com (mailing list archive)
State New, archived
Headers show

Commit Message

Bartlomiej Zolnierkiewicz Aug. 4, 2014, 5:45 p.m. UTC 
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@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
---
 arch/arm/mach-exynos/exynos.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
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Patch

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);