xref: /linux/arch/arm64/boot/dts/renesas/r8a774c0-ek874-idk-2121wr.dts (revision 4f2c0a4acffbec01079c28f839422e64ddeff004) 
1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Device Tree Source for the Silicon Linux RZ/G2E evaluation kit (EK874),
4 * connected to an Advantech IDK-2121WR 21.5" LVDS panel
5 *
6 * Copyright (C) 2019 Renesas Electronics Corp.
7 */
8
9#include "r8a774c0-ek874.dts"
10
11/ {
12	backlight: backlight {
13		compatible = "pwm-backlight";
14		pwms = <&pwm5 0 50000>;
15
16		brightness-levels = <0 4 8 16 32 64 128 255>;
17		default-brightness-level = <6>;
18
19		power-supply = <&reg_12p0v>;
20		enable-gpios = <&gpio6 12 GPIO_ACTIVE_HIGH>;
21	};
22
23	panel-lvds {
24		compatible = "advantech,idk-2121wr", "panel-lvds";
25
26		width-mm = <476>;
27		height-mm = <268>;
28
29		data-mapping = "vesa-24";
30
31		panel-timing {
32			clock-frequency = <148500000>;
33			hactive = <1920>;
34			vactive = <1080>;
35			hsync-len = <44>;
36			hfront-porch = <88>;
37			hback-porch = <148>;
38			vfront-porch = <4>;
39			vback-porch = <36>;
40			vsync-len = <5>;
41		};
42
43		ports {
44			#address-cells = <1>;
45			#size-cells = <0>;
46
47			port@0 {
48				reg = <0>;
49				dual-lvds-odd-pixels;
50				panel_in0: endpoint {
51					remote-endpoint = <&lvds0_out>;
52				};
53			};
54
55			port@1 {
56				reg = <1>;
57				dual-lvds-even-pixels;
58				panel_in1: endpoint {
59					remote-endpoint = <&lvds1_out>;
60				};
61			};
62		};
63	};
64};
65
66&gpio0 {
67	/*
68	 * When GP0_17 is low LVDS[01] are connected to the LVDS connector
69	 * When GP0_17 is high LVDS[01] are connected to the LT8918L
70	 */
71	lvds-connector-en-hog {
72		gpio-hog;
73		gpios = <17 GPIO_ACTIVE_HIGH>;
74		output-low;
75		line-name = "lvds-connector-en-gpio";
76	};
77};
78
79&lvds0 {
80	ports {
81		port@1 {
82			lvds0_out: endpoint {
83				remote-endpoint = <&panel_in0>;
84			};
85		};
86	};
87};
88
89&lvds1 {
90	status = "okay";
91
92	clocks = <&cpg CPG_MOD 727>, <&x13_clk>, <&extal_clk>;
93	clock-names = "fck", "dclkin.0", "extal";
94
95	ports {
96		port@1 {
97			lvds1_out: endpoint {
98				remote-endpoint = <&panel_in1>;
99			};
100		};
101	};
102};
103
104&pfc {
105	pwm5_pins: pwm5 {
106		groups = "pwm5_a";
107		function = "pwm5";
108	};
109};
110
111&pwm5 {
112	pinctrl-0 = <&pwm5_pins>;
113	pinctrl-names = "default";
114
115	status = "okay";
116};
117