arm64: dts: mt8183: Add pwm and backlight node

Add pwm to mt8183 and backlight to mt8183-kukui.

Signed-off-by: Hsin-Yi Wang <hsinyi@chromium.org>
Tested-by: Enric Balletbo i Serra <enric.balletbo@collabora.com>
Link: https://lore.kernel.org/r/20201124041253.4181273-1-hsinyi@chromium.org
Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>

diff --git a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
index 85f7c33..bf2ad12 100644 (file)
--- a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
@@ -19,6 +19,17 @@
                stdout-path = "serial0:115200n8";
        };
 
+       backlight_lcd0: backlight_lcd0 {
+               compatible = "pwm-backlight";
+               pwms = <&pwm0 0 500000>;
+               power-supply = <&bl_pp5000>;
+               enable-gpios = <&pio 176 0>;
+               brightness-levels = <0 1023>;
+               num-interpolated-steps = <1023>;
+               default-brightness-level = <576>;
+               status = "okay";
+       };
+
        memory@40000000 {
                device_type = "memory";
                reg = <0 0x40000000 0 0x80000000>;
@@ -536,6 +547,17 @@
                };
        };
 
+       pwm0_pin_default: pwm0_pin_default {
+               pins1 {
+                       pinmux = <PINMUX_GPIO176__FUNC_GPIO176>;
+                       output-high;
+                       bias-pull-up;
+               };
+               pins2 {
+                       pinmux = <PINMUX_GPIO43__FUNC_DISP_PWM>;
+               };
+       };
+
        scp_pins: scp {
                pins_scp_uart {
                        pinmux = <PINMUX_GPIO110__FUNC_TP_URXD1_AO>,
@@ -670,6 +692,12 @@
        };
 };
 
+&pwm0 {
+       status = "okay";
+       pinctrl-names = "default";
+       pinctrl-0 = <&pwm0_pin_default>;
+};
+
 &scp {
        status = "okay";
        pinctrl-names = "default";

diff --git a/arch/arm64/boot/dts/mediatek/mt8183.dtsi b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
index 1ef39c5..2a88325 100644 (file)
--- a/arch/arm64/boot/dts/mediatek/mt8183.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8183.dtsi
@@ -641,6 +641,16 @@
                        status = "disabled";
                };
 
+               pwm0: pwm@1100e000 {
+                       compatible = "mediatek,mt8183-disp-pwm";
+                       reg = <0 0x1100e000 0 0x1000>;
+                       interrupts = <GIC_SPI 128 IRQ_TYPE_LEVEL_LOW>;
+                       #pwm-cells = <2>;
+                       clocks = <&topckgen CLK_TOP_MUX_DISP_PWM>,
+                                       <&infracfg CLK_INFRA_DISP_PWM>;
+                       clock-names = "main", "mm";
+               };
+
                i2c3: i2c@1100f000 {
                        compatible = "mediatek,mt8183-i2c";
                        reg = <0 0x1100f000 0 0x1000>,