arm64: dts: mediatek: mt8195: Add display pwm nodes

Add the two hardware PWMs for display backlighting but keep them
disabled by default, as usage is board-specific.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: Chen-Yu Tsai <wenst@chromium.org>
Tested-by: Chen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20230223145426.193590-4-angelogioacchino.delregno@collabora.com
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

Author: AngeloGioacchino Del Regno

arch/arm64/boot/dts/mediatek/mt8195.dtsi

@@ -1118,6 +1118,29 @@
 			#thermal-sensor-cells = <1>;
 		};
 
+		disp_pwm0: pwm@1100e000 {
+			compatible = "mediatek,mt8195-disp-pwm", "mediatek,mt8183-disp-pwm";
+			reg = <0 0x1100e000 0 0x1000>;
+			interrupts = <GIC_SPI 203 IRQ_TYPE_LEVEL_LOW 0>;
+			power-domains = <&spm MT8195_POWER_DOMAIN_VDOSYS0>;
+			#pwm-cells = <2>;
+			clocks = <&topckgen CLK_TOP_DISP_PWM0>,
+				 <&infracfg_ao CLK_INFRA_AO_DISP_PWM>;
+			clock-names = "main", "mm";
+			status = "disabled";
+		};
+
+		disp_pwm1: pwm@1100f000 {
+			compatible = "mediatek,mt8195-disp-pwm", "mediatek,mt8183-disp-pwm";
+			reg = <0 0x1100f000 0 0x1000>;
+			interrupts = <GIC_SPI 793 IRQ_TYPE_LEVEL_HIGH 0>;
+			#pwm-cells = <2>;
+			clocks = <&topckgen CLK_TOP_DISP_PWM1>,
+				 <&infracfg_ao CLK_INFRA_AO_DISP_PWM1>;
+			clock-names = "main", "mm";
+			status = "disabled";
+		};
+
 		spi1: spi@11010000 {
 			compatible = "mediatek,mt8195-spi",
 				     "mediatek,mt6765-spi";