一. 簡介

mipi屏調(diào)試一般都要在RK平臺的dts中配置屏幕上電初始化時序：panel-init-sequence和下電初始化時序：panel-exit-sequence。本文講解如何配置屏幕的這些初始化時序。
專欄總目錄

二. 數(shù)據(jù)類型：Data Type

2.1 常見數(shù)據(jù)類型 1 ：DCS Write

注意：這里的parameter并不是指數(shù)據(jù)字節(jié)個數(shù)

0x05 命令類型: 單字節(jié)數(shù)據(jù)    (DCS Short Write, no parameters)
0x15 命令類型: 雙字節(jié)數(shù)據(jù)    (DCS Short Write, 1 parameter)


0x39 命令類型: 多字節(jié)數(shù)據(jù)    (DCS Long Write, n parameters n > 2)

0x05 命令類型：(DCS Short Write, no parameters)

05 95 01 11
05 95 01 29

0x15 命令類型：(DCS Short Write, 1 parameter)

15 00 02 80 77
|  |  | |  |
|  |  | |  數(shù)據(jù)
|  |  | | 寄存器地址
|  |  數(shù)據(jù)長度
|  延時
命令類型（0x05: 單字節(jié)數(shù)據(jù) 0x15: 雙字節(jié)數(shù)據(jù) 0x39: 多字節(jié)數(shù)據(jù)）
	
解析：
Data Type：0x15       ( 0x15格式的數(shù)據(jù)類型 DCS Short Write, 1 parameter)
Delay：0x00           ( 延時，表示當前 Packet 發(fā)送完成之后，需要延時多少 ms，再開始發(fā)送下一條命令 )
Payload Length：0x02  ( Packet 的有效負載長度為2 Bytes，數(shù)據(jù)字節(jié)個數(shù)為2 )
Payload: 0x80 0x77    ( Payload 數(shù)據(jù) )

0x39 命令類型是帶多個參數(shù),大于兩個參數(shù) (DCS Long Write / write_LUT Command Packet)

39 00 06 FF 77 01 00 00 10
39 00 03 C0 63 00
39 00 03 C1 11 02

2.2 常見數(shù)據(jù)類型 2 ：Generic Write

注意：這里的parameter并不是指數(shù)據(jù)字節(jié)個數(shù)

0x03 命令類型：  單字節(jié)數(shù)據(jù) (Generic Short Write, no parameters)
0x13 命令類型：  雙字節(jié)數(shù)據(jù) (Generic Short Write, 1 parameter)


0x23 命令類型：  三字節(jié)數(shù)據(jù) (Generic Short Write, 2 parameters)


0x29 命令類型：  多字節(jié)數(shù)據(jù) (Generic Long Write, n parameters n > 2)

三. RK平臺上電初始化時序配置

屏廠給的MIPI屏初始化代碼：

params- >dsi.vertical_sync_active=2
params- >dsi.vertical_backporch=10
params- >dsi.vertical_frontporch=14
params- >dsi.horizontal_sync_active=24
params- >dsi.horizontal_backporch=80
params- >dsi.horizontal_frontporch=60
params- >dsi.PLL_CLOCK=478
 
LCD_nReset=1;
Delayms(5);
LCD_nReset=0;
Delayms(20);//10
LCD_nReset=1;
Delayms(200);//120

Generic_Short_Write_1P(0xB0,0x01);	
Generic_Short_Write_1P(0xC0,0x26);	
Generic_Short_Write_1P(0xC1,0x10);	
Generic_Short_Write_1P(0xC2,0x0E);	
Generic_Short_Write_1P(0xC3,0x00);	
Generic_Short_Write_1P(0xC4,0x00);	
Generic_Short_Write_1P(0xC5,0x23);	
Generic_Short_Write_1P(0xC6,0x11);	
Generic_Short_Write_1P(0xC7,0x22);	
Generic_Short_Write_1P(0xC8,0x20);	
Generic_Short_Write_1P(0xC9,0x1E);	
Generic_Short_Write_1P(0xCA,0x1C);	
Generic_Short_Write_1P(0xCB,0x0C);	
Generic_Short_Write_1P(0xCC,0x0A);	
Generic_Short_Write_1P(0xCD,0x08);	
Generic_Short_Write_1P(0xCE,0x06);	
Generic_Short_Write_1P(0xCF,0x18);	
Generic_Short_Write_1P(0xD0,0x02);	
Generic_Short_Write_1P(0xD1,0x00);	
Generic_Short_Write_1P(0xD2,0x00);	
Generic_Short_Write_1P(0xD3,0x00);	
Generic_Short_Write_1P(0xD4,0x26);	
Generic_Short_Write_1P(0xD5,0x0F);	
Generic_Short_Write_1P(0xD6,0x0D);	
Generic_Short_Write_1P(0xD7,0x00);	
Generic_Short_Write_1P(0xD8,0x00);	
Generic_Short_Write_1P(0xD9,0x23);	
Generic_Short_Write_1P(0xDA,0x11);	
Generic_Short_Write_1P(0xDB,0x21);	
Generic_Short_Write_1P(0xDC,0x1F);	
Generic_Short_Write_1P(0xDD,0x1D);	
Generic_Short_Write_1P(0xDE,0x1B);	
Generic_Short_Write_1P(0xDF,0x0B);	
Generic_Short_Write_1P(0xE0,0x09);	
Generic_Short_Write_1P(0xE1,0x07);	
Generic_Short_Write_1P(0xE2,0x05);	
Generic_Short_Write_1P(0xE3,0x17);	
Generic_Short_Write_1P(0xE4,0x01);	
Generic_Short_Write_1P(0xE5,0x00);	
Generic_Short_Write_1P(0xE6,0x00);	
Generic_Short_Write_1P(0xE7,0x00);	
Generic_Short_Write_1P(0xB0,0x03);	
Generic_Short_Write_1P(0xBE,0x04);	
Generic_Short_Write_1P(0xB9,0x40);	
Generic_Short_Write_1P(0xCC,0x88);	
Generic_Short_Write_1P(0xC8,0x0C);	
Generic_Short_Write_1P(0xC9,0x07);	
Generic_Short_Write_1P(0xCD,0x01);	
Generic_Short_Write_1P(0xCA,0x40);	
Generic_Short_Write_1P(0xCE,0x1A);	
Generic_Short_Write_1P(0xCF,0x60);	
Generic_Short_Write_1P(0xD2,0x08);	
Generic_Short_Write_1P(0xD3,0x08);	
Generic_Short_Write_1P(0xDB,0x01);	
Generic_Short_Write_1P(0xD9,0x06);	
Generic_Short_Write_1P(0xD4,0x00);	
Generic_Short_Write_1P(0xD5,0x01);	
Generic_Short_Write_1P(0xD6,0x04);	
Generic_Short_Write_1P(0xD7,0x03);	
Generic_Short_Write_1P(0xC2,0x00);	
Generic_Short_Write_1P(0xC3,0x0E);	
Generic_Short_Write_1P(0xC4,0x00);	
Generic_Short_Write_1P(0xC5,0x0E);	
Generic_Short_Write_1P(0xDD,0x00);	
Generic_Short_Write_1P(0xDE,0x0E);	
Generic_Short_Write_1P(0xE6,0x00);	
Generic_Short_Write_1P(0xE7,0x0E);	
Generic_Short_Write_1P(0xC2,0x00);	
Generic_Short_Write_1P(0xC3,0x0E);	
Generic_Short_Write_1P(0xC4,0x00);	
Generic_Short_Write_1P(0xC5,0x0E);	
Generic_Short_Write_1P(0xDD,0x00);	
Generic_Short_Write_1P(0xDE,0x0E);	
Generic_Short_Write_1P(0xE6,0x00);	
Generic_Short_Write_1P(0xE7,0x0E);	
Generic_Short_Write_1P(0xB0,0x06);	
Generic_Short_Write_1P(0xC0,0xA5);	
Generic_Short_Write_1P(0xD5,0x1C);	
Generic_Short_Write_1P(0xC0,0x00);	
Generic_Short_Write_1P(0xB0,0x00);
Generic_Short_Write_1P(0xBD,0x30);//VCOM	  37
	
Generic_Short_Write_1P(0xF9,0x5C);	
Generic_Short_Write_1P(0xC2,0x14);	
Generic_Short_Write_1P(0xC4,0x14);	
Generic_Short_Write_1P(0xBF,0x15);	
Generic_Short_Write_1P(0xC0,0x0C);	


Generic_Short_Write_1P(0xB0,0x00);
Generic_Short_Write_1P(0xB1,0x79);
Generic_Short_Write_1P(0xBA,0x8F);//

     DCS_Short_Write_NP(0x11);	
     Delay(200);
     DCS_Short_Write_NP(0x29);
     Delay(50);

3.1 分析客戶給的mipi屏初始化代碼：

Generic_Short_Write_1P(0xBA,0x8F);

Generic_Short_Write_1P表示：發(fā)送Generic命令，帶1個參數(shù)，數(shù)據(jù)字節(jié)個數(shù)為2(Generic Short Write, 1 parameter)
0xBA：寄存器地址
0x8F：數(shù)據(jù)1為0x8F

在DTS上轉成RK上的mipi屏初始化格式

13 00 02 BA 8F

解析：
13 表示0x13數(shù)據(jù)類型的指令
00 表示沒有延時
02 表示兩個數(shù)據(jù)長度 ：0xBA,0x8F
BA 表示寄存器地址0xBA
8F 表示0x8F這個數(shù)據(jù)

分析客戶給的mipi屏初始化代碼：

DCS_Short_Write_NP(0x11);	
 Delay(200);
 DCS_Short_Write_NP(0x29);
 Delay(50);
 
 解析：
 DCS_Short_Write_NP表示：只發(fā)送DCS命令，不帶參數(shù)，數(shù)據(jù)字節(jié)個數(shù)為1。(DCS Short Write, no parameters)
 0x11：數(shù)據(jù)1為0x11
 Delay(200)：延遲為200

在DTS上轉成RK上的mipi屏初始化格式

05 C8 01 11
05 32 01 29

解析：
05 表示0x05數(shù)據(jù)類型的指令
C8 表示延時為200 轉換成16進制為0xC8
01 表示1個數(shù)據(jù)長度 ：0x11
11 表示數(shù)據(jù)：0x11

3.2 將屏廠的初始化代碼轉換成RK平臺的屏幕上電初始化時序DTS配置：

panel-init-sequence = [
			13 00 02 B0 01
			13 00 02 C0 26
			13 00 02 C1 10
			13 00 02 C2 0E
			13 00 02 C3 00
			13 00 02 C4 00
			13 00 02 C5 23
			13 00 02 C6 11
			13 00 02 C7 22
			13 00 02 C8 20
			13 00 02 C9 1E
			13 00 02 CA 1C
			13 00 02 CB 0C
			13 00 02 CC 0A
			13 00 02 CD 08
			13 00 02 CE 06
			13 00 02 CF 18
			13 00 02 D0 02
			13 00 02 D1 00
			13 00 02 D2 00
			13 00 02 D3 00
			13 00 02 D4 26
			13 00 02 D5 0F
			13 00 02 D6 0D
			13 00 02 D7 00
			13 00 02 D8 00
			13 00 02 D9 23
			13 00 02 DA 11
			13 00 02 DB 21
			13 00 02 DC 1F
			13 00 02 DD 1D
			13 00 02 DE 1B
			13 00 02 DF 0B
			13 00 02 E0 09
			13 00 02 E1 07
			13 00 02 E2 05
			13 00 02 E3 17
			13 00 02 E4 01
			13 00 02 E5 00
			13 00 02 E6 00
			13 00 02 E7 00
			13 00 02 B0 03
			13 00 02 BE 04
			13 00 02 B9 40
			13 00 02 CC 88
			13 00 02 C8 0C
			13 00 02 C9 07
			13 00 02 CD 01
			13 00 02 CA 40
			13 00 02 CE 1A
			13 00 02 CF 60
			13 00 02 D2 08
			13 00 02 D3 08
			13 00 02 DB 01
			13 00 02 D9 06
			13 00 02 D4 00
			13 00 02 D5 01
			13 00 02 D6 04
			13 00 02 D7 03
			13 00 02 C2 00
			13 00 02 C3 0E
			13 00 02 C4 00
			13 00 02 C5 0E
			13 00 02 DD 00
			13 00 02 DE 0E
			13 00 02 E6 00
			13 00 02 E7 0E
			13 00 02 C2 00
			13 00 02 C3 0E
			13 00 02 C4 00
			13 00 02 C5 0E
			13 00 02 DD 00
			13 00 02 DE 0E
			13 00 02 E6 00
			13 00 02 E7 0E
			13 00 02 B0 06
			13 00 02 C0 A5
			13 00 02 D5 1C
			13 00 02 C0 00
			13 00 02 B0 00
			13 00 02 BD 30

			13 00 02 F9 5C
			13 00 02 C2 14
			13 00 02 C4 14
			13 00 02 BF 15
			13 00 02 C0 0C


			13 00 02 B0 00
			13 00 02 B1 79
			13 00 02 BA 8F

			05 C8 01 11
			05 32 01 29
		];

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

審核編輯：湯梓紅

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RK3588-MIPI屏幕調(diào)試筆記:RK3588-MIPI-DSI之LCD上電初始化時序

一. 簡介

二. 數(shù)據(jù)類型：Data Type

2.1 常見數(shù)據(jù)類型 1 ：DCS Write

2.2 常見數(shù)據(jù)類型 2 ：Generic Write

三. RK平臺上電初始化時序配置

3.1 分析客戶給的mipi屏初始化代碼：

3.2 將屏廠的初始化代碼轉換成RK平臺的屏幕上電初始化時序DTS配置：

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