From: Julien Massot <julien.massot@collabora.com>
Date: Tue, 4 Mar 2025 14:01:55 +0000 (+0100)
Subject: arm64: dts: mediatek: mt8395-nio-12l: Prepare MIPI DSI port
X-Git-Tag: v6.15-rc1~159^2~31^2~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d34c0f3003587026069e3751babba2ab17b8f74f;p=thirdparty%2Fkernel%2Fstable.git

arm64: dts: mediatek: mt8395-nio-12l: Prepare MIPI DSI port

This board can use a MIPI-DSI panel on the DSI0 connector: in
preparation for adding an overlay for the Radxa Display 8HD,
add the backlight, and some definitions for pins available
through the DSI0 port.

Signed-off-by: Julien Massot <julien.massot@collabora.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20250304-radxa-panel-overlay-v2-1-3ee6797d3f86@collabora.com
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---

diff --git a/arch/arm64/boot/dts/mediatek/mt8395-radxa-nio-12l.dts b/arch/arm64/boot/dts/mediatek/mt8395-radxa-nio-12l.dts
index 7184dc99296c7..1c922e98441a1 100644
--- a/arch/arm64/boot/dts/mediatek/mt8395-radxa-nio-12l.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8395-radxa-nio-12l.dts
@@ -48,6 +48,18 @@
 		reg = <0 0x40000000 0x1 0x0>;
 	};
 
+	backlight: backlight {
+		compatible = "pwm-backlight";
+		brightness-levels = <0 1023>;
+		default-brightness-level = <576>;
+		enable-gpios = <&pio 107 GPIO_ACTIVE_HIGH>;
+		num-interpolated-steps = <1023>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&dsi0_backlight_pins>;
+		pwms = <&disp_pwm0 0 500000>;
+		status = "disabled";
+	};
+
 	wifi_vreg: regulator-wifi-3v3-en {
 		compatible = "regulator-fixed";
 		regulator-name = "wifi_3v3_en";
@@ -502,6 +514,13 @@
 &pio {
 	mediatek,rsel-resistance-in-si-unit;
 
+	dsi0_backlight_pins: dsi0-backlight-pins {
+		pins-backlight-en {
+			pinmux = <PINMUX_GPIO107__FUNC_GPIO107>;
+			output-high;
+		};
+	};
+
 	eth_default_pins: eth-default-pins {
 		pins-cc {
 			pinmux = <PINMUX_GPIO85__FUNC_GBE_TXC>,
@@ -699,6 +718,13 @@
 		};
 	};
 
+	panel_default_pins: panel-pins {
+		pins-rst {
+			pinmux = <PINMUX_GPIO108__FUNC_GPIO108>;
+			bias-pull-up;
+		};
+	};
+
 	pcie0_default_pins: pcie0-default-pins {
 		pins-bus {
 			pinmux = <PINMUX_GPIO19__FUNC_WAKEN>,
@@ -717,6 +743,12 @@
 		};
 	};
 
+	pwm0_default_pins: pwm0-pins {
+		pins-disp-pwm {
+			pinmux = <PINMUX_GPIO97__FUNC_DISP_PWM0>;
+		};
+	};
+
 	spi1_pins: spi1-default-pins {
 		pins-bus {
 			pinmux = <PINMUX_GPIO136__FUNC_SPIM1_CSB>,
@@ -737,6 +769,19 @@
 		};
 	};
 
+	touch_pins: touch-pins {
+		pins-touch-int {
+			pinmux = <PINMUX_GPIO132__FUNC_GPIO132>;
+			input-enable;
+			bias-disable;
+		};
+
+		pins-touch-rst {
+			pinmux = <PINMUX_GPIO133__FUNC_GPIO133>;
+			output-high;
+		};
+	};
+
 	uart0_pins: uart0-pins {
 		pins-bus {
 			pinmux = <PINMUX_GPIO98__FUNC_UTXD0>,