From: Tomasz Figa Date: Thu, 13 Feb 2014 22:43:54 +0000 (+0900) Subject: ARM: dts: Keep G3D regulator always on for exynos5250-arndale X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=bfeda827278f09f4db35877e5f1ca9c149ca2890;p=linux-beck.git ARM: dts: Keep G3D regulator always on for exynos5250-arndale Apparently, if G3D regulator is powered off, the SoC cannot enter low power modes and just hangs. This patch fixes this by keeping the regulator always on when the system is running, as suggested by Exynos 4 User's Manual in case of Exynos4210/4x12 SoCs (Exynos5250 UM does not have such note, but observed behavior seems to confirm that it is true for this SoC as well). This fixes an issue preventing Arndale board from entering sleep mode observed since commit 346f372f7b72a0 clk: exynos5250: Add CLK_IGNORE_UNUSED flag for pmu clock that landed in kernel 3.10, which has fixed the clock driver to make the SoC actually try to enter the sleep mode. Signed-off-by: Tomasz Figa Acked-by: Kyungmin Park Cc: [v3.10+] Tested-by: Tushar Behera Signed-off-by: Kukjin Kim --- diff --git a/arch/arm/boot/dts/exynos5250-arndale.dts b/arch/arm/boot/dts/exynos5250-arndale.dts index b42e658876e5..457112d659ea 100644 --- a/arch/arm/boot/dts/exynos5250-arndale.dts +++ b/arch/arm/boot/dts/exynos5250-arndale.dts @@ -287,6 +287,7 @@ regulator-name = "vdd_g3d"; regulator-min-microvolt = <1000000>; regulator-max-microvolt = <1000000>; + regulator-always-on; regulator-boot-on; op_mode = <1>; };