arm64: dts: mediatek: mt8173-elm: Add backlight enable pin config

Add the proper pinctrl for GPIO95 backlight enable pin and assign it
to the pwm-backlight node.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20211102144224.457446-2-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

diff --git a/arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi b/arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi
index f292ca4..9c75fbb 100644 (file)
--- a/arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8173-elm.dtsi
@@ -27,6 +27,8 @@
                power-supply = <&bl_fixed_reg>;
                enable-gpios = <&pio 95 GPIO_ACTIVE_HIGH>;
 
+               pinctrl-names = "default";
+               pinctrl-0 = <&panel_backlight_en_pins>;
                status = "okay";
        };
 
@@ -825,6 +827,12 @@
                };
        };
 
+       panel_backlight_en_pins: panel_backlight_en_pins {
+               pins1 {
+                       pinmux = <MT8173_PIN_95_PCM_TX__FUNC_GPIO95>;
+               };
+       };
+
        panel_fixed_pins: panel_fixed_pins {
                pins1 {
                        pinmux = <MT8173_PIN_41_CMMCLK__FUNC_GPIO41>;