From mboxrd@z Thu Jan 1 00:00:00 1970 From: k.kozlowski@samsung.com (Krzysztof Kozlowski) Date: Mon, 12 Jan 2015 10:23:05 +0100 Subject: [RFC 3/3] ARM: dts: Use frequency scaling for MSHC In-Reply-To: <1421054585-9032-1-git-send-email-k.kozlowski@samsung.com> References: <1421054585-9032-1-git-send-email-k.kozlowski@samsung.com> Message-ID: <1421054585-9032-4-git-send-email-k.kozlowski@samsung.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Enable frequency scaling on MSHC to reduce energy consumption. In idle this reduced energy consumption by 1.0% (from 27.16 mA to 26.89 mA). Signed-off-by: Krzysztof Kozlowski --- arch/arm/boot/dts/exynos3250-rinato.dts | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/exynos3250-rinato.dts b/arch/arm/boot/dts/exynos3250-rinato.dts index e53f62f216ba..aad09109fdbc 100644 --- a/arch/arm/boot/dts/exynos3250-rinato.dts +++ b/arch/arm/boot/dts/exynos3250-rinato.dts @@ -493,6 +493,7 @@ vmmc-supply = <&ldo12_reg>; clock-frequency = <100000000>; clock-freq-min-max = <400000 100000000>; + frequency-scaling; samsung,dw-mshc-ciu-div = <1>; samsung,dw-mshc-sdr-timing = <0 1>; samsung,dw-mshc-ddr-timing = <1 2>; -- 1.9.1