arm64: dts: mediatek: mt8390-genio-common: Add Display on DSI0

Configure the DSI0 display pipeline and add regulator, pinctrl
and display node to enable the Startek KD070FHFID078 panel found
on the MediaTek Genio 510 and Genio 700 EVKs.

Link: https://lore.kernel.org/r/20250220110948.45596-3-angelogioacchino.delregno@collabora.com
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

1 files changed, 137 insertions, 8 deletions

diff --git a/arch/arm64/boot/dts/mediatek/mt8390-genio-common.dtsi b/arch/arm64/boot/dts/mediatek/mt8390-genio-common.dtsi
index 698054ed5d6d..127764c4d6be 100644
--- a/arch/arm64/boot/dts/mediatek/mt8390-genio-common.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8390-genio-common.dtsi
@@ -21,6 +21,7 @@
 
 / {
 	aliases {
+		dsi0 = &disp_dsi0;
 		ethernet0 = ð
 		i2c0 = &i2c0;
 		i2c1 = &i2c1;
@@ -34,6 +35,15 @@
 		serial0 = &uart0;
 	};
 
+	backlight_lcm1: backlight-lcm1 {
+		compatible = "pwm-backlight";
+		brightness-levels = <0 1023>;
+		default-brightness-level = <576>;
+		num-interpolated-steps = <1023>;
+		power-supply = <&reg_vsys>;
+		pwms = <&disp_pwm1 0 500000>;
+	};
+
 	chosen {
 		stdout-path = "serial0:921600n8";
 	};
@@ -227,6 +237,28 @@
 		regulator-max-microvolt = <5000000>;
 		enable-active-high;
 	};
+
+	lcm1_iovcc: regulator-vio18-lcm1 {
+		compatible = "regulator-fixed";
+		regulator-name = "vio18_lcm1";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		enable-active-high;
+		gpio = <&pio 111 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&dsi0_vreg_en_pins>;
+		vin-supply = <&reg_vsys>;
+	};
+
+	lcm1_vddp: regulator-vsys-lcm1 {
+		compatible = "regulator-fixed";
+		regulator-name = "vsys_lcm1";
+		regulator-min-microvolt = <4200000>;
+		regulator-max-microvolt = <4200000>;
+		regulator-always-on;
+		regulator-boot-on;
+		vin-supply = <&reg_vsys>;
+	};
 };
 
 &adsp {
@@ -239,6 +271,67 @@
 	status = "okay";
 };
 
+&disp_dsi0 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+
+	panel@0 {
+		compatible = "startek,kd070fhfid078", "himax,hx8279";
+		reg = <0>;
+		backlight = <&backlight_lcm1>;
+		enable-gpios = <&pio 45 GPIO_ACTIVE_HIGH>;
+		reset-gpios = <&pio 25 GPIO_ACTIVE_HIGH>;
+		iovcc-supply = <&lcm1_iovcc>;
+		vdd-supply = <&lcm1_vddp>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&panel_default_pins>;
+
+		port {
+			dsi_panel_in: endpoint {
+				remote-endpoint = <&dsi0_out>;
+			};
+		};
+	};
+
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port@0 {
+			reg = <0>;
+			dsi0_in: endpoint {
+				remote-endpoint = <&dither0_out>;
+			};
+		};
+
+		port@1 {
+			reg = <1>;
+			dsi0_out: endpoint {
+				remote-endpoint = <&dsi_panel_in>;
+			};
+		};
+	};
+};
+
+&disp_pwm1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&disp_pwm1_pins>;
+	status = "okay";
+};
+
+&dither0_in {
+	remote-endpoint = <&postmask0_out>;
+};
+
+&dither0_out {
+	remote-endpoint = <&dsi0_in>;
+};
+
+&gamma0_out {
+	remote-endpoint = <&postmask0_in>;
+};
+
 &gpu {
 	mali-supply = <&mt6359_vproc2_buck_reg>;
 	status = "okay";
@@ -390,6 +483,10 @@
 	domain-supply = <&mt6359_vsram_others_ldo_reg>;
 };
 
+&mipi_tx_config0 {
+	status = "okay";
+};
+
 &mmc0 {
 	status = "okay";
 	pinctrl-names = "default", "state_uhs";
@@ -499,6 +596,10 @@
 	mediatek,mic-type-1 = <3>; /* DCC */
 };
 
+&ovl0_in {
+	remote-endpoint = <&vdosys0_ep_main>;
+};
+
 &pcie {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pcie_default_pins>;
@@ -537,6 +638,12 @@
 		};
 	};
 
+	disp_pwm1_pins: disp-pwm1-pins {
+		pins-pwm {
+			pinmux = <PINMUX_GPIO30__FUNC_O_DISP_PWM1>;
+		};
+	};
+
 	dptx_pins: dptx-pins {
 		pins-cmd-dat {
 			pinmux = <PINMUX_GPIO46__FUNC_I0_DP_TX_HPD>;
@@ -857,20 +964,22 @@
 		};
 	};
 
-	panel_default_pins: panel-default-pins {
-		pins-dcdc {
-			pinmux = <PINMUX_GPIO45__FUNC_B_GPIO45>;
-			output-low;
-		};
-
-		pins-en {
+	dsi0_vreg_en_pins: dsi0-vreg-en-pins {
+		pins-pwr-en {
 			pinmux = <PINMUX_GPIO111__FUNC_B_GPIO111>;
 			output-low;
 		};
+	};
 
+	panel_default_pins: panel-default-pins {
 		pins-rst {
 			pinmux = <PINMUX_GPIO25__FUNC_B_GPIO25>;
-			output-high;
+			output-low;
+		};
+
+		pins-en {
+			pinmux = <PINMUX_GPIO45__FUNC_B_GPIO45>;
+			output-low;
 		};
 	};
 
@@ -1055,6 +1164,14 @@
 	};
 };
 
+&postmask0_in {
+	remote-endpoint = <&gamma0_out>;
+};
+
+&postmask0_out {
+	remote-endpoint = <&dither0_in>;
+};
+
 &scp_cluster {
 	status = "okay";
 };
@@ -1124,6 +1241,18 @@
 	status = "okay";
 };
 
+&vdosys0 {
+	port {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		vdosys0_ep_main: endpoint@0 {
+			reg = <0>;
+			remote-endpoint = <&ovl0_in>;
+		};
+	};
+};
+
 &u3phy0 {
 	status = "okay";
 };