lkml.org 
[lkml]   [2014]   [Sep]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v6 5/5] ARM: EXYNOS: cpuidle: allow driver usage on Exynos4x12 SoCs
Date
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).

Currently Exynos4412 SoC support is limited to Trats2 board.

Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
---
v6:
- limit Exynos4412 SoC support to Trats2 board for now

arch/arm/mach-exynos/exynos.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/arch/arm/mach-exynos/exynos.c b/arch/arm/mach-exynos/exynos.c
index 6a24e11..f5a78d7 100644
--- a/arch/arm/mach-exynos/exynos.c
+++ b/arch/arm/mach-exynos/exynos.c
@@ -317,7 +317,10 @@ 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,trats2")) ||
+ of_machine_is_compatible("samsung,exynos5250"))
platform_device_register(&exynos_cpuidle);

platform_device_register_simple("exynos-cpufreq", -1, NULL, 0);
--
1.8.2.3


\
 
 \ /
  Last update: 2014-09-05 16:41    [W:0.175 / U:0.056 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site