基于RK3568 对接 10.1寸mipi屏调试

最新推荐文章于 2025-03-04 15:12:33 发布

big-shark

最新推荐文章于 2025-03-04 15:12:33 发布

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文章标签： android 嵌入式硬件

本文链接：https://blog.youkuaiyun.com/m0_58553975/article/details/144349808

版权

2、 panel-init-sequence 初始化时序

3、时序

四、总结

五，dts文件

一、基本信息

硬件平台： RK3568
系统: Android 11
SDK版本：rk_android11.0_sdk_231020.tgz （官方提供）

参考资料：Rockchip_Developer_Guide_Android11_SDK_V1.1.6_CN.pdf

LCD屏：10.1寸 mipi接口 1200x1920 竖屏

二、硬件电路

三、DTS配置

参考资料：RK3588_MIPI_DSI2_Developer_Guide_CN.pdf

dts 几个关键点：基本都和LCD屏有关，需要厂家提供资料

1、配置延时，如下图

2、 panel-init-sequence 初始化时序

厂家很可能提供多种配置格式，最终转换为rk要求的格式

如提供：

Generic_Long_Write_3P(0xFF,98,81,03);
//GIP_1
Generic_Short_Write_1P(0x01,0x00);
Generic_Short_Write_1P(0x02,0x00);
Generic_Short_Write_1P(0x03,0x73);
Generic_Short_Write_1P(0x04,0x00);
Generic_Short_Write_1P(0x05,0x00);
Generic_Short_Write_1P(0x06,0x08);
Generic_Short_Write_1P(0x07,0x00);
Generic_Short_Write_1P(0x08,0x00);
Generic_Short_Write_1P(0x09,0x00);

需要进行转换，请看另一篇文章《RK3568-MIPI屏幕调试笔记: LCD上电初始化时序》。

3、时序

其中clock-frequency 通过计算得到，方法如上图。

四、总结

mipi屏的调试，重点几个方面

1、硬件保证联通，mipi线，背光电路，电源控制电路，第一步保证硬件正常

2、dts配置，采用rk的默认配置，重点修改目录三的项目，关键点是初始化系列命令

该命令必须从厂家获取，如果是rk格式的直接使用，如果不是需要转换为rk格式的。

五，dts文件

完整的DTS如下
/ {
/* MIPI DSI0 Backlight*/
backlight: backlight {
status = "okay";
compatible = "pwm-backlight";
enable-gpios = <&gpio0 RK_PC3 GPIO_ACTIVE_HIGH>; //背光使能GPIO
pwms = <&pwm4 0 50000 1>;
brightness-levels = <
60 60 60 61 61 61 62 62
...
248 249 250 251 252 253 254 255
>;
default-brightness-level = <128>;
};
};

/* Config MIPI DSI0 Video Port ,Panel, TP */
&route_dsi0 {
status = "okay";
//logo,rotation = <270>; //support rotation 90,180,270
connect = <&vp1_out_dsi0>;
};

&video_phy0 {
status = "okay";
};

&dsi0_in_vp0 {
status = "disabled";
};

&dsi0_in_vp1 {
status = "okay";
};

/*
* mipi_dphy0 needs to be enabled
* when dsi0 is enabled
*/
&dsi0 {
status = "okay";
//rockchip,lane-rate = <1000>;
dsi0_panel: panel@0 {
status = "okay";
compatible = "simple-panel-dsi";
reg = <0>;
backlight = <&backlight>;

enable-gpios = <&gpio0 RK_PC7 GPIO_ACTIVE_HIGH>; // 电源使能GPIO
reset-gpios = <&gpio3 RK_PB5 GPIO_ACTIVE_LOW>; //

enable-delay-ms = <35>;
prepare-delay-ms = <6>;
reset-delay-ms = <25>;
init-delay-ms = <55>;
unprepare-delay-ms = <0>;
disable-delay-ms = <20>;
mipi-data-delay-ms = <200>;
size,width = <120>;
size,height = <170>;
dsi,flags = <(MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_LPM | MIPI_DSI_MODE_EOT_PACKET)>;
dsi,format = <MIPI_DSI_FMT_RGB888>;
dsi,lanes = <4>;

panel-init-sequence = [
29 00 04 FF 98 81 03
//GIP_1
13 00 02 01 00
13 00 02 02 00
13 00 02 03 73
13 00 02 04 00
13 00 02 05 00
13 00 02 06 08
13 00 02 07 00
13 00 02 08 00
13 00 02 09 00
13 00 02 0A 01
13 00 02 0B 01
13 00 02 0C 00
13 00 02 0D 01
13 00 02 0E 01
13 00 02 0F 00
13 00 02 10 00
13 00 02 11 00
13 00 02 12 00
13 00 02 13 02 //00
13 00 02 14 00
13 00 02 15 00
13 00 02 16 00
13 00 02 17 00
13 00 02 18 00
13 00 02 19 00
13 00 02 1A 00
13 00 02 1B 00
13 00 02 1C 00
13 00 02 1D 00
13 00 02 1E 40
13 00 02 1F C0
13 00 02 20 06
13 00 02 21 01
13 00 02 22 06
13 00 02 23 01
13 00 02 24 88
13 00 02 25 88
13 00 02 26 00
13 00 02 27 00
13 00 02 28 3B
13 00 02 29 03
13 00 02 2A 00
13 00 02 2B 00
13 00 02 2C 00
13 00 02 2D 00
13 00 02 2E 00
13 00 02 2F 00
13 00 02 30 00
13 00 02 31 00
13 00 02 32 00
13 00 02 33 00
13 00 02 34 00 // GPWR1/2 non overlap time 2.62us
13 00 02 35 00
13 00 02 36 00
13 00 02 37 00
13 00 02 38 00
13 00 02 39 00
13 00 02 3A 00
13 00 02 3B 00
13 00 02 3C 00
13 00 02 3D 00
13 00 02 3E 00
13 00 02 3F 00
13 00 02 40 00
13 00 02 41 00
13 00 02 42 00
13 00 02 43 00
13 00 02 44 00
//GIP_2
                       13 00 02 50 01
                       13 00 02 51 23
                       13 00 02 52 45
                       13 00 02 53 67
                       13 00 02 54 89
                       13 00 02 55 AB
                       13 00 02 56 01
                       13 00 02 57 23
                       13 00 02 58 45
                       13 00 02 59 67
                       13 00 02 5A 89
                       13 00 02 5B AB
                       13 00 02 5C CD
                       13 00 02 5D EF
                       //GIP_3
                       13 00 02 5E 00
                       13 00 02 5F 01
                       13 00 02 60 01
                       13 00 02 61 06
                       13 00 02 62 06
                       13 00 02 63 07
                       13 00 02 64 07
                       13 00 02 65 00
                       13 00 02 66 00
                       13 00 02 67 02
                       13 00 02 68 02
                       13 00 02 69 05
                       13 00 02 6A 05
                       13 00 02 6B 02
                       13 00 02 6C 0D
                       13 00 02 6D 0D
                       13 00 02 6E 0C
                       13 00 02 6F 0C
                       13 00 02 70 0F
                       13 00 02 71 0F
                       13 00 02 72 0E
                       13 00 02 73 0E
                       13 00 02 74 02
                       13 00 02 75 01
                       13 00 02 76 01
                       13 00 02 77 06
                       13 00 02 78 06
                       13 00 02 79 07
                       13 00 02 7A 07
                       13 00 02 7B 00
                       13 00 02 7C 00
                       13 00 02 7D 02
                       13 00 02 7E 02
                       13 00 02 7F 05
                       13 00 02 80 05
                       13 00 02 81 02
                       13 00 02 82 0D
                       13 00 02 83 0D
                       13 00 02 84 0C
                       13 00 02 85 0C
                       13 00 02 86 0F
                       13 00 02 87 0F
                       13 00 02 88 0E
                       13 00 02 89 0E
                       13 00 02 8A 02
//Page 4 command;
29 00 04 FF 98 81 04
                       13 00 02 3B C0 // ILI4003D sel
                       13 00 02 6C 15 //Set VCORE voltage =1.5V
                       13 00 02 6E 2A //di_pwr_reg=0 for power mode 2A //VGH clamp 18V
                       13 00 02 6F 33 //45 //pumping ratio VGH=5x VGL=-3x
                       13 00 02 8D 1B //VGL clamp -10V
                       13 00 02 87 BA //ESD
                       13 00 02 3A 24 //POWER SAVING
                       13 00 02 26 76
                       13 00 02 B2 D1
                       // Page 1 command
                       29 00 04 FF 98 81 01
                       13 00 02 22 0A //BGR, SS
                       13 00 02 31 00 //Zigzag type3 inversion
                       13 00 02 40 53 // ILI4003D sel
                       13 00 02 43 66
                       13 00 02 53 3f
                       13 00 02 50 87
                       13 00 02 51 82
                       13 00 02 60 15
                       13 00 02 61 01
                       13 00 02 62 0C
                       13 00 02 63 00
                       // Gamma P
                       13 00 02 A0 00
                       13 00 02 A1 13 //VP251
                       13 00 02 A2 23 //VP247
                       13 00 02 A3 14 //VP243
                       13 00 02 A4 16 //VP239
                       13 00 02 A5 29 //VP231
                       13 00 02 A6 1E //VP219
                       13 00 02 A7 1D //VP203
                       13 00 02 A8 86 //VP175
                       13 00 02 A9 1E //VP144
                       13 00 02 AA 29 //VP111
                       13 00 02 AB 74 //VP80
                       13 00 02 AC 19 //VP52
                       13 00 02 AD 17 //VP36
                       13 00 02 AE 4B //VP24
                       13 00 02 AF 20 //VP16
                       13 00 02 B0 26 //VP12
                       13 00 02 B1 4C //VP8
                       13 00 02 B2 5D //VP4
                       13 00 02 B3 3F //VP0
                       // Gamma N
                       13 00 02 C0 00 //VN255 GAMMA N
                       13 00 02 C1 13 //VN251
                       13 00 02 C2 23 //VN247
                       13 00 02 C3 14 //VN243
                       13 00 02 C4 16 //VN239
                       13 00 02 C5 29 //VN231
                       13 00 02 C6 1E //VN219
                       13 00 02 C7 1D //VN203
                       13 00 02 C8 86 //VN175
                       13 00 02 C9 1E //VN144
                       13 00 02 CA 29 //VN111
                       13 00 02 CB 74 //VN80
                       13 00 02 CC 19 //VN52
                       13 00 02 CD 17 //VN36
                       13 00 02 CE 4B //VN24
                       13 00 02 CF 20 //VN16
                       13 00 02 D0 26 //VN12
                       13 00 02 D1 4C //VN8
                       13 00 02 D2 5D //VN4
                       13 00 02 D3 3F //VN0
                       // Page 0 command
                       29 00 04 FF 98 81 00
                       05 C8 01 11
                       05 32 01 29
];

panel-exit-sequence = [
05 00 01 28
05 00 01 10
];

disp_timings0: display-timings {
native-mode = <&dsi0_timing0>;
dsi0_timing0: timing0 {

/*clk = (hactive +hfront+hsysnc+hback)x(vactive+vsync+vback)x60
   clk = (1200+16+16+48)x(1920+8+16+8)x60=(1280)x1952x60 = 149913600
*/
clock-frequency = <150000000>;
hactive = <1200>;
vactive = <1920>;
hsync-len = <16>;
hback-porch = <48>;
hfront-porch = <16>;
vsync-len = <8>;
vback-porch = <16>;
vfront-porch = <8>;
hsync-active = <0>;
vsync-active = <0>;
de-active = <0>;
pixelclk-active = <0>;
};

};