1// SPDX-License-Identifier: (GPL-2.0+ OR MIT) 2/* 3 * Google Trogdor dts fragment for the boards with Parade ps8640 edp bridge 4 * 5 * Copyright 2021 Google LLC. 6 */ 7 8#include <dt-bindings/gpio/gpio.h> 9 10/ { 11 pp3300_brij_ps8640: pp3300-brij-ps8640-regulator { 12 compatible = "regulator-fixed"; 13 status = "okay"; 14 regulator-name = "pp3300_brij_ps8640"; 15 16 regulator-min-microvolt = <3300000>; 17 regulator-max-microvolt = <3300000>; 18 19 gpio = <&tlmm 32 GPIO_ACTIVE_HIGH>; 20 enable-active-high; 21 22 pinctrl-names = "default"; 23 pinctrl-0 = <&en_pp3300_edp_brij_ps8640>; 24 25 vin-supply = <&pp3300_a>; 26 }; 27}; 28 29/* 30 * ADDITIONS TO FIXED REGULATORS DEFINED IN PARENT DEVICE TREE FILES 31 * 32 * Sort order matches the order in the parent files (parents before children). 33 */ 34 35&pp3300_dx_edp { 36 off-on-delay-us = <500000>; 37 38 /* 39 * It's nicer to start with this regulator enabled. The 40 * bootloader may have left it on and it's nice not to cause an 41 * extra power cycle of the touchscreen and eDP panel at bootup. 42 * This should help speed bootup because we have off-on-delay-us. 43 */ 44 regulator-boot-on; 45}; 46 47/* ADDITIONS TO NODES DEFINED IN PARENT DEVICE TREE FILES */ 48 49edp_brij_i2c: &i2c2 { 50 status = "okay"; 51 clock-frequency = <400000>; 52 53 ps8640_bridge: bridge@8 { 54 compatible = "parade,ps8640"; 55 reg = <0x8>; 56 57 powerdown-gpios = <&tlmm 104 GPIO_ACTIVE_LOW>; 58 reset-gpios = <&tlmm 11 GPIO_ACTIVE_LOW>; 59 60 pinctrl-names = "default"; 61 pinctrl-0 = <&edp_brij_en>, <&edp_brij_ps8640_rst>; 62 63 vdd12-supply = <&pp1200_brij>; 64 vdd33-supply = <&pp3300_brij_ps8640>; 65 66 ports { 67 #address-cells = <1>; 68 #size-cells = <0>; 69 70 port@0 { 71 reg = <0>; 72 ps8640_in: endpoint { 73 remote-endpoint = <&mdss_dsi0_out>; 74 }; 75 }; 76 77 port@1 { 78 reg = <1>; 79 ps8640_out: endpoint { 80 remote-endpoint = <&panel_in_edp>; 81 }; 82 }; 83 }; 84 85 aux-bus { 86 panel: panel { 87 /* Compatible will be filled in per-board */ 88 power-supply = <&pp3300_dx_edp>; 89 backlight = <&backlight>; 90 91 port { 92 panel_in_edp: endpoint { 93 remote-endpoint = <&ps8640_out>; 94 }; 95 }; 96 }; 97 }; 98 }; 99}; 100 101&mdss_dsi0_out { 102 remote-endpoint = <&ps8640_in>; 103}; 104 105&tlmm { 106 edp_brij_ps8640_rst: edp-brij-ps8640-rst-state { 107 pins = "gpio11"; 108 function = "gpio"; 109 drive-strength = <2>; 110 bias-disable; 111 }; 112 113 en_pp3300_edp_brij_ps8640: en-pp3300-edp-brij-ps8640-state { 114 pins = "gpio32"; 115 function = "gpio"; 116 drive-strength = <2>; 117 bias-disable; 118 }; 119}; 120