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 = <®_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 };
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