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

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>

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 0b0dfd3..f912694 100644 (file)
--- 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>;
 
@@ -304,6 +307,14 @@
                };
        };
 
+       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";