arm64: dts: mediatek: mt8395-genio-1200-evk: Add display on DSI0

This board has a Startek KD070FHFID078 MIPI-DSI panel on the DSI0
connector, so add and configure the pipeline connecting VDOSYS0
components to DSI0, with the needed pinctrl and display nodes in
devicetree.

Signed-off-by: Louis-Alexis Eyraud <louisalexis.eyraud@collabora.com>
Link: https://lore.kernel.org/r/20250224-mt8395-genio-1200-evk-enable-dsi-panel-v1-1-74f31cf48a43@collabora.com
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

diff --git a/arch/arm64/boot/dts/mediatek/mt8395-genio-1200-evk.dts b/arch/arm64/boot/dts/mediatek/mt8395-genio-1200-evk.dts
index 2740c799ca12d7e05694f706df34335fa164aeb8..dc884e2e95c70309407798e6a51b595e441e6369 100644 (file)
--- a/arch/arm64/boot/dts/mediatek/mt8395-genio-1200-evk.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8395-genio-1200-evk.dts
@@ -91,13 +91,12 @@
                };
        };
 
-       backlight_lcd0: backlight-lcd0 {
+       backlight_lcm0: backlight-lcm0 {
                compatible = "pwm-backlight";
-               pwms = <&disp_pwm0 0 500000>;
-               enable-gpios = <&pio 47 GPIO_ACTIVE_HIGH>;
                brightness-levels = <0 1023>;
-               num-interpolated-steps = <1023>;
                default-brightness-level = <576>;
+               num-interpolated-steps = <1023>;
+               pwms = <&disp_pwm0 0 500000>;
        };
 
        backlight_lcd1: backlight-lcd1 {
@@ -150,6 +149,24 @@
                };
        };
 
+       lcm0_iovcc: regulator-vio18-lcm0 {
+               compatible = "regulator-fixed";
+               regulator-name = "vio18_lcm0";
+               enable-active-high;
+               gpio = <&pio 47 GPIO_ACTIVE_HIGH>;
+               pinctrl-names = "default";
+               pinctrl-0 = <&dsi0_vreg_en_pins>;
+               vin-supply = <&mt6360_ldo2>;
+       };
+
+       lcm0_vddp: regulator-vsys-lcm0 {
+               compatible = "regulator-fixed";
+               regulator-name = "vsys_lcm0";
+               regulator-always-on;
+               regulator-boot-on;
+               vin-supply = <&mt6360_ldo1>;
+       };
+
        wifi_fixed_3v3: regulator-2 {
                compatible = "regulator-fixed";
                regulator-name = "wifi_3v3";
@@ -163,14 +180,65 @@
 
 &disp_pwm0 {
        pinctrl-names = "default";
-       pinctrl-0 = <&pwm0_default_pins>;
+       pinctrl-0 = <&disp_pwm0_pins>;
        status = "okay";
 };
 
+&dither0_in {
+       remote-endpoint = <&gamma0_out>;
+};
+
+&dither0_out {
+       remote-endpoint = <&dsi0_in>;
+};
+
 &dmic_codec {
        wakeup-delay-ms = <200>;
 };
 
+&dsi0 {
+       #address-cells = <1>;
+       #size-cells = <0>;
+       status = "okay";
+
+       panel@0 {
+               compatible = "startek,kd070fhfid078", "himax,hx8279";
+               reg = <0>;
+               backlight = <&backlight_lcm0>;
+               enable-gpios = <&pio 48 GPIO_ACTIVE_HIGH>;
+               reset-gpios = <&pio 108 GPIO_ACTIVE_HIGH>;
+               iovcc-supply = <&lcm0_iovcc>;
+               vdd-supply = <&lcm0_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>;
+                       };
+               };
+       };
+};
+
 &eth {
        phy-mode ="rgmii-rxid";
        phy-handle = <&eth_phy0>;
@@ -194,6 +262,10 @@
        };
 };
 
+&gamma0_out {
+       remote-endpoint = <&dither0_in>;
+};
+
 &gpu {
        mali-supply = <&mt6315_7_vbuck1>;
        status = "okay";
@@ -418,6 +490,10 @@
        domain-supply = <&mt6359_vsram_others_ldo_reg>;
 };
 
+&mipi_tx0 {
+       status = "okay";
+};
+
 &mmc0 {
        status = "okay";
        pinctrl-names = "default", "state_uhs";
@@ -500,6 +576,10 @@
        mediatek,mic-type-2 = <1>; /* ACC */
 };
 
+&ovl0_in {
+       remote-endpoint = <&vdosys0_ep_main>;
+};
+
 &pcie0 {
        pinctrl-names = "default", "idle";
        pinctrl-0 = <&pcie0_default_pins>;
@@ -777,6 +857,25 @@
                };
        };
 
+       dsi0_vreg_en_pins: dsi0-vreg-en-pins {
+               pins-pwr-en {
+                       pinmux = <PINMUX_GPIO47__FUNC_GPIO47>;
+                       output-low;
+               };
+       };
+
+       panel_default_pins: panel-default-pins {
+               pins-rst {
+                       pinmux = <PINMUX_GPIO108__FUNC_GPIO108>;
+                       output-high;
+               };
+
+               pins-en {
+                       pinmux = <PINMUX_GPIO48__FUNC_GPIO48>;
+                       output-low;
+               };
+       };
+
        pcie0_default_pins: pcie0-default-pins {
                pins {
                        pinmux = <PINMUX_GPIO19__FUNC_WAKEN>,
@@ -803,8 +902,8 @@
                };
        };
 
-       pwm0_default_pins: pwm0-default-pins {
-               pins-cmd-dat {
+       disp_pwm0_pins: disp-pwm0-pins {
+               pins-disp-pwm {
                        pinmux = <PINMUX_GPIO97__FUNC_DISP_PWM0>;
                };
        };
@@ -1015,6 +1114,18 @@
        status = "okay";
 };
 
+&vdosys0 {
+       port {
+               #address-cells = <1>;
+               #size-cells = <0>;
+
+               vdosys0_ep_main: endpoint@0 {
+                       reg = <0>;
+                       remote-endpoint = <&ovl0_in>;
+               };
+       };
+};
+
 &xhci0 {
        status = "okay";
 };