arch/arm64/boot/dts/renesas/r8a774c0-ek874-idk-2121wr.dts

// SPDX-License-Identifier: GPL-2.0
/*
 * Device Tree Source for the Silicon Linux RZ/G2E evaluation kit (EK874),
 * connected to an Advantech IDK-2121WR 21.5" LVDS panel
 *
 * Copyright (C) 2019 Renesas Electronics Corp.
 */

#include "r8a774c0-ek874.dts"

/ {
	backlight: backlight {
		compatible = "pwm-backlight";
		pwms = <&pwm5 0 50000>;

		brightness-levels = <0 4 8 16 32 64 128 255>;
		default-brightness-level = <6>;

		power-supply = <&reg_12p0v>;
		enable-gpios = <&gpio6 12 GPIO_ACTIVE_HIGH>;
	};

	panel-lvds {
		compatible = "advantech,idk-2121wr", "panel-lvds";

		width-mm = <476>;
		height-mm = <268>;

		data-mapping = "vesa-24";

		panel-timing {
			clock-frequency = <148500000>;
			hactive = <1920>;
			vactive = <1080>;
			hsync-len = <44>;
			hfront-porch = <88>;
			hback-porch = <148>;
			vfront-porch = <4>;
			vback-porch = <36>;
			vsync-len = <5>;
		};

		ports {
			#address-cells = <1>;
			#size-cells = <0>;

			port@0 {
				reg = <0>;
				dual-lvds-odd-pixels;
				panel_in0: endpoint {
					remote-endpoint = <&lvds0_out>;
				};
			};

			port@1 {
				reg = <1>;
				dual-lvds-even-pixels;
				panel_in1: endpoint {
					remote-endpoint = <&lvds1_out>;
				};
			};
		};
	};
};

&gpio0 {
	/*
	 * When GP0_17 is low LVDS[01] are connected to the LVDS connector
	 * When GP0_17 is high LVDS[01] are connected to the LT8918L
	 */
	lvds-connector-en-gpio{
		gpio-hog;
		gpios = <17 GPIO_ACTIVE_HIGH>;
		output-low;
		line-name = "lvds-connector-en-gpio";
	};
};

&lvds0 {
	ports {
		port@1 {
			lvds0_out: endpoint {
				remote-endpoint = <&panel_in0>;
			};
		};
	};
};

&lvds1 {
	status = "okay";

	clocks = <&cpg CPG_MOD 727>, <&x13_clk>, <&extal_clk>;
	clock-names = "fck", "dclkin.0", "extal";

	ports {
		port@1 {
			lvds1_out: endpoint {
				remote-endpoint = <&panel_in1>;
			};
		};
	};
};

&pfc {
	pwm5_pins: pwm5 {
		groups = "pwm5_a";
		function = "pwm5";
	};
};

&pwm5 {
	pinctrl-0 = <&pwm5_pins>;
	pinctrl-names = "default";

	status = "okay";
};