From mboxrd@z Thu Jan 1 00:00:00 1970 From: srinivas.kandagatla@linaro.org (Srinivas Kandagatla) Date: Thu, 28 Jan 2016 17:43:30 +0000 Subject: [PATCH v2 2/9] arm64: dts: qcom: add correct drive strenght on cs pins In-Reply-To: <1454002960-3106-1-git-send-email-srinivas.kandagatla@linaro.org> References: <1454002960-3106-1-git-send-email-srinivas.kandagatla@linaro.org> Message-ID: <1454003010-3204-1-git-send-email-srinivas.kandagatla@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 2mA drive strenght is not enough to drive chipselect low on hardware configurations with level shifters, 16mA should give good range to allow such configurations to work. This issue was noticed while testing spi on db410c with sensor board. Signed-off-by: Srinivas Kandagatla --- arch/arm64/boot/dts/qcom/msm8916-pins.dtsi | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/arch/arm64/boot/dts/qcom/msm8916-pins.dtsi b/arch/arm64/boot/dts/qcom/msm8916-pins.dtsi index 3bd917e..8d05005 100644 --- a/arch/arm64/boot/dts/qcom/msm8916-pins.dtsi +++ b/arch/arm64/boot/dts/qcom/msm8916-pins.dtsi @@ -81,8 +81,8 @@ bias-disable; }; pinconf_cs { - pins = "gpio2"; - drive-strength = <2>; + pins = "gpio16"; + drive-strength = <16>; bias-disable; output-high; }; @@ -116,7 +116,7 @@ }; pinconf_cs { pins = "gpio6"; - drive-strength = <2>; + drive-strength = <16>; bias-disable; output-high; }; @@ -150,7 +150,7 @@ }; pinconf_cs { pins = "gpio10"; - drive-strength = <2>; + drive-strength = <16>; bias-disable; output-high; }; @@ -184,7 +184,7 @@ }; pinconf_cs { pins = "gpio14"; - drive-strength = <2>; + drive-strength = <16>; bias-disable; output-high; }; @@ -218,7 +218,7 @@ }; pinconf_cs { pins = "gpio18"; - drive-strength = <2>; + drive-strength = <16>; bias-disable; output-high; }; @@ -252,7 +252,7 @@ }; pinconf_cs { pins = "gpio22"; - drive-strength = <2>; + drive-strength = <16>; bias-disable; output-high; }; -- 1.9.1