From mboxrd@z Thu Jan 1 00:00:00 1970 From: wxt@rock-chips.com (Caesar Wang) Date: Wed, 2 Dec 2015 19:12:21 +0800 Subject: [PATCH 2/2] ARM: dts: rockchip: change the correct voltage range for rk3288 evb board In-Reply-To: <1449054741-25354-1-git-send-email-wxt@rock-chips.com> References: <1449054741-25354-1-git-send-email-wxt@rock-chips.com> Message-ID: <1449054741-25354-2-git-send-email-wxt@rock-chips.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org In general, the logic voltage is affected by ddr frequency factors. We should fix the correct voltage range since assuemd that we have the ddr frequency driver in mainline. AFAIK, the 1.8v voltage is used by the SD3.0 card. Signed-off-by: Caesar Wang --- arch/arm/boot/dts/rk3288-evb-act8846.dts | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/arm/boot/dts/rk3288-evb-act8846.dts b/arch/arm/boot/dts/rk3288-evb-act8846.dts index 43949a6..2797f32 100644 --- a/arch/arm/boot/dts/rk3288-evb-act8846.dts +++ b/arch/arm/boot/dts/rk3288-evb-act8846.dts @@ -119,8 +119,8 @@ vdd_log: REG3 { regulator-name = "VDD_LOG"; - regulator-min-microvolt = <1000000>; - regulator-max-microvolt = <1000000>; + regulator-min-microvolt = <700000>; + regulator-max-microvolt = <1500000>; regulator-always-on; }; @@ -133,7 +133,7 @@ vccio_sd: REG5 { regulator-name = "VCCIO_SD"; - regulator-min-microvolt = <3300000>; + regulator-min-microvolt = <1800000>; regulator-max-microvolt = <3300000>; regulator-always-on; }; -- 1.9.1