From: Nikita Travkin <nikitos.tr@gmail.com>
Date: Fri, 13 Nov 2020 17:59:17 +0000 (+0500)
Subject: arm64: dts: qcom: msm8916-samsung-a2015: Disable muic i2c pin bias
X-Git-Tag: v5.10.7~765
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=94268e0c9a59bad6e56379ca57bb0bb51f8da1bf;p=platform%2Fkernel%2Flinux-rpi.git

arm64: dts: qcom: msm8916-samsung-a2015: Disable muic i2c pin bias

[ Upstream commit 4e8692c2ee3d4ac6b669f7e306364d77a574c810 ]

Some versions of the firmware leave i2c gpios in a wrong state.
Add pinctrl that disables pin bias since external pull-up resistors
are present.

Reviewed-by: Stephan Gerhold <stephan@gerhold.net>
Fixes: 1329c1ab0730 ("arm64: dts: qcom: Add device tree for Samsung Galaxy A3U/A5U")
Signed-off-by: Nikita Travkin <nikitos.tr@gmail.com>
Link: https://lore.kernel.org/r/20201113175917.189123-6-nikitos.tr@gmail.com
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi b/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
index b18d21e..f7ac4c4 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
@@ -78,6 +78,9 @@
 		sda-gpios = <&msmgpio 105 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
 		scl-gpios = <&msmgpio 106 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
 
+		pinctrl-names = "default";
+		pinctrl-0 = <&muic_i2c_default>;
+
 		#address-cells = <1>;
 		#size-cells = <0>;
 
@@ -314,6 +317,14 @@
 		};
 	};
 
+	muic_i2c_default: muic-i2c-default {
+		pins = "gpio105", "gpio106";
+		function = "gpio";
+
+		drive-strength = <2>;
+		bias-disable;
+	};
+
 	muic_int_default: muic-int-default {
 		pins = "gpio12";
 		function = "gpio";