ARM: dts: exynos: Add pinctrl config for Midas keys

This pins are externally pulled up, and so we should explicitly
configure them to disable the SoC-internal pull-downs. Previously
we relied on the bootloader doing this in order to allow the buttons
to function properly.

Signed-off-by: Simon Shields <simon@lineageos.org>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

diff --git a/arch/arm/boot/dts/exynos4412-midas.dtsi b/arch/arm/boot/dts/exynos4412-midas.dtsi
index 4a194a3..635e5ea 100644 (file)
--- a/arch/arm/boot/dts/exynos4412-midas.dtsi
+++ b/arch/arm/boot/dts/exynos4412-midas.dtsi
@@ -94,6 +94,8 @@
 
        gpio-keys {
                compatible = "gpio-keys";
+               pinctrl-names = "default";
+               pinctrl-0 = <&gpio_keys>;
 
                key-down {
                        gpios = <&gpx3 3 GPIO_ACTIVE_LOW>;
@@ -1009,6 +1011,11 @@
        pinctrl-names = "default";
        pinctrl-0 = <&sleep1>;
 
+       gpio_keys: gpio-keys {
+               samsung,pins = "gpx0-1", "gpx2-2", "gpx2-7", "gpx3-3";
+               samsung,pin-pud = <EXYNOS_PIN_PULL_NONE>;
+       };
+
        max77693_irq: max77693-irq {
                samsung,pins = "gpx1-5";
                samsung,pin-pud = <EXYNOS_PIN_PULL_NONE>;