Part Number: AM62P
kernel version “Linux am62pxx-evm 6.18.13”
yocto sdk 12.00.00.07
dss1 to dsi0 dtso file :
// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
/**
* DT Overlay for RPi 7inch touchscreen panel interfaced with DSI on
* AM62P5-SK EVM.
*
* RPi DSI Panel: www.raspberrypi.com/.../
*
* Copyright (C) 2024 Texas Instruments Incorporated - https://www.ti.com/
*/
/dts-v1/;
/plugin/;
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>
#include "k3-pinctrl.h"
&{/} {
dsi_backlight: dsi_backlight {
compatible = "pwm-backlight";
brightness-levels = <
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39
40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59
60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79
80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99
100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119
120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139
140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159
160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179
180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199
200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219
220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239
240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255>;
default-brightness-level = <230>;
pwms = <&epwm1 1 100000 0>;
};
};
&dphy_tx0 {
status = "okay";
};
&main_i2c2 {
#address-cells = <1>;
#size-cells = <0>;
touch-controller@5d {
compatible = "goodix,gt911";
reg = <0x5d>;
touchscreen-size-x = < 800 >;
touchscreen-size-y = < 1280 >;
//vcc-supply = <&display_reg>;
pinctrl-0 = <&dsi_tp_default>;
interrupt-parent = <&main_gpio0>;
interrupts = <63 IRQ_TYPE_EDGE_RISING>;
irq-gpios = <&main_gpio0 63 GPIO_ACTIVE_HIGH>;
reset-gpios = <&main_gpio0 64 GPIO_ACTIVE_LOW>;
//touchscreen-inverted-x;
//touchscreen-inverted-y;
status = "okay";
};
};
&dss1 {
status = "okay";
};
&dss1_ports {
status = "okay";
#address-cells = <1>;
#size-cells = <0>;
/* DSS1-VP1: DSI Output */
port@1 {
reg = <1>;
dss1_dpi1_out: endpoint {
remote-endpoint = <&dsi0_in>;
};
};
};
&dsi0 {
status = "okay";
#address-cells = <1>;
#size-cells = <0>;
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
dsi0_out: endpoint {
remote-endpoint = <&panel_in>;
};
};
port@1 {
reg = <1>;
dsi0_in: endpoint {
remote-endpoint = <&dss1_dpi1_out>;
};
};
};
panel@0 {
status = "okay";
compatible = "debix,TD080B";
reg = <0>;
backlight = <&dsi_backlight>;
pinctrl-0 = <&dsi_en_pins_default>;
reset-gpio = <&main_gpio0 62 GPIO_ACTIVE_HIGH>;
dsi-lanes = <4>;
video-mode = <2>; /* 0: burst mode
* 1: non-burst mode with sync event
* 2: non-burst mode with sync pulse
*/
panel-width-mm = <107>;
panel-height-mm = <172>;
port {
panel_in: endpoint {
remote-endpoint = <&dsi0_out>;
};
};
};
};
&epwm1 {
pinctrl-names = "default";
pinctrl-0 = <&main_epwm1_pins_default>;
status = "okay";
};
&main_pmx0 {
dsi_tp_default: dsi-tp-default-pins {
pinctrl-single,pins = <
AM62PX_IOPAD(0x0100, PIN_INPUT, 7) /* (W20) VOUT0_VSYNC.GPIO0_63 */
AM62PX_IOPAD(0x0104, PIN_INPUT, 7) /* (Y21) VOUT0_PCLK.GPIO0_64 */
>;
};
main_epwm1_pins_default: main-epwm1-default-pins {
pinctrl-single,pins = <
AM62PX_IOPAD(0x01a0, PIN_INPUT, 6) /* (F23) MCASP0_AXR0.EHRPWM1_B */
>;
};
dsi_en_pins_default: dsi-en-pins-default-pins {
pinctrl-single,pins = <
AM62PX_IOPAD(0x00fc, PIN_INPUT, 7) /* (W21) VOUT0_DE.GPIO0_62 */
>;
};
};
drivers/gpu/drm/panel/panel-td080b.c
kmsprint
root@am62pxx-evm:~# kmsprint
Connector 0 (42) DSI-1 (connected)
Encoder 0 (41) NONE
Crtc 0 (40) 800x1280@44.32 50.000 800/30/8/4/- 1280/20/20/20/- 44 (44.32) P|D
Plane 0 (33) fb-id: 51 (crtcs: 0) 0,0 800x1280 -> 0,0 800x1280 (AR12 AB12 RA12 RG16 BG16 AR15 AB15 AR24 AB24 RA24 BA24 RG24 BG24 AR30 AB30 XR12 XB12 RX12 XR15 XB15 XR24 XB24 RX24 BX24 XR30 XB30 YUYV UYVY NV12)
FB 51 800x1280 XR24
kmsprint displays the correct resolution, and there are no errors reported for tidss 30200000.dss. However, there is no signal output from the DSI interface.
DSI output schematic diagram:
How can I configure to enable DSI output signal?
