1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
2 /*
3 * Google Trogdor dts fragment for the boards with TI sn65dsi86 edp bridge
4 *
5 * Copyright 2021 Google LLC.
6 */
7
8 #include <dt-bindings/gpio/gpio.h>
9
10 /*
11 * ADDITIONS TO FIXED REGULATORS DEFINED IN PARENT DEVICE TREE FILES
12 *
13 * Sort order matches the order in the parent files (parents before children).
14 */
15
16 &pp3300_dx_edp {
17 off-on-delay-us = <500000>;
18
19 /*
20 * It's nicer to start with this regulator enabled. The
21 * bootloader may have left it on and it's nice not to cause an
22 * extra power cycle of the touchscreen and eDP panel at bootup.
23 * This should help speed bootup because we have off-on-delay-us.
24 */
25 regulator-boot-on;
26 };
27
28 /* ADDITIONS TO NODES DEFINED IN PARENT DEVICE TREE FILES */
29
30 edp_brij_i2c: &i2c2 {
31 status = "okay";
32 clock-frequency = <400000>;
33
34 sn65dsi86_bridge: bridge@2d {
35 compatible = "ti,sn65dsi86";
36 reg = <0x2d>;
37 pinctrl-names = "default";
38 pinctrl-0 = <&edp_brij_en>, <&edp_brij_irq>;
39 gpio-controller;
40 #gpio-cells = <2>;
41
42 interrupt-parent = <&tlmm>;
43 interrupts = <11 IRQ_TYPE_LEVEL_HIGH>;
44
45 enable-gpios = <&tlmm 104 GPIO_ACTIVE_HIGH>;
46
47 vpll-supply = <&pp1800_edp_vpll>;
48 vccio-supply = <&pp1800_brij_vccio>;
49 vcca-supply = <&pp1200_brij>;
50 vcc-supply = <&pp1200_brij>;
51
52 clocks = <&rpmhcc RPMH_LN_BB_CLK3>;
53 clock-names = "refclk";
54
55 no-hpd;
56
57 ports {
58 #address-cells = <1>;
59 #size-cells = <0>;
60
61 port@0 {
62 reg = <0>;
63 sn65dsi86_in: endpoint {
64 remote-endpoint = <&mdss_dsi0_out>;
65 };
66 };
67
68 port@1 {
69 reg = <1>;
70 sn65dsi86_out: endpoint {
71 data-lanes = <0 1>;
72 remote-endpoint = <&panel_in_edp>;
73 };
74 };
75 };
76
77 aux-bus {
78 panel: panel {
79 /* Compatible will be filled in per-board */
80 power-supply = <&pp3300_dx_edp>;
81 backlight = <&backlight>;
82 hpd-gpios = <&sn65dsi86_bridge 2 GPIO_ACTIVE_HIGH>;
83
84 port {
85 panel_in_edp: endpoint {
86 remote-endpoint = <&sn65dsi86_out>;
87 };
88 };
89 };
90 };
91 };
92 };
93
94 &mdss_dsi0_out {
95 remote-endpoint = <&sn65dsi86_in>;
96 };
97
98 &tlmm {
99 edp_brij_irq: edp-brij-irq-state {
100 pins = "gpio11";
101 function = "gpio";
102 drive-strength = <2>;
103 bias-pull-down;
104 };
105 };
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