arm64: dts: imx8mq-librem5: Add LCD_1V8 regulator

It's a supply for to touch and LCD.

Signed-off-by: Guido Günther <agx@sigxcpu.org>
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi b/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi
index d7d807c..f77b51d 100644 (file)
--- a/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi
@@ -82,6 +82,20 @@
                enable-active-high;
        };
 
+       reg_lcd_1v8: regulator-lcd-1v8 {
+               compatible = "regulator-fixed";
+               pinctrl-names = "default";
+               pinctrl-0 = <&pinctrl_dsien>;
+               regulator-name = "LCD_1V8";
+               regulator-min-microvolt = <1800000>;
+               regulator-max-microvolt = <1800000>;
+               vin-supply = <&reg_vdd_1v8>;
+               gpio = <&gpio1 5 GPIO_ACTIVE_HIGH>;
+               enable-active-high;
+               /* Otherwise i2c3 is not functional */
+               regulator-always-on;
+       };
+
        reg_lcd_3v4: regulator-lcd-3v4 {
                compatible = "regulator-fixed";
                regulator-name = "LCD_3V4";
@@ -892,6 +906,7 @@
                interrupts = <27 IRQ_TYPE_EDGE_FALLING>;
                touchscreen-size-x = <720>;
                touchscreen-size-y = <1440>;
+               vcc-supply = <&reg_lcd_1v8>;
        };
 };