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    一图看懂 MIPI LCD 的初始化序列

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    • YuzukiTsuru
      柚木 鉉 LV 9 最后由 编辑

      abaf53b0-ba3b-4d0c-aa76-931a7b8d0e91-ac07aab78e5da1998ddb7890b666831.png

      屏厂一般会给这样的一个init code资料

      {DSICMD_CMD,0x01}, 
{CMDDELAY_MS,120}, 
  
{DSICMD_CMD,0x11},
{CMDDELAY_MS,120}, 
         
{DSICMD_CMD,0xFF}, 
{DSICMD_DATA,0x77},  
{DSICMD_DATA,0x01},  
{DSICMD_DATA,0x00},  
{DSICMD_DATA,0x00},  
{DSICMD_DATA,0x11}, 
 
{DSICMD_CMD,0xD1},
{DSICMD_DATA,0x11}, 

{DSICMD_CMD,0x55},
{DSICMD_DATA,0xb0},  // 80 90 b0

              
{DSICMD_CMD,0xFF},
{DSICMD_DATA,0x77},  
{DSICMD_DATA,0x01},  
{DSICMD_DATA,0x00},  
{DSICMD_DATA,0x00},  
{DSICMD_DATA,0x10},  


{DSICMD_CMD,0xC0}, 
{DSICMD_DATA,0x63},  
{DSICMD_DATA,0x00},  

{DSICMD_CMD,0xC1},  
{DSICMD_DATA,0x09},
{DSICMD_DATA,0x02},  

{DSICMD_CMD,0xC2},   
{DSICMD_DATA,0x37},  
{DSICMD_DATA,0x08},


{DSICMD_CMD,0xC7},//x-dir
{DSICMD_DATA,0x04},  //  rotate 0 : 0x00     rotate 180 :0x04

{DSICMD_CMD,0xCC},    
{DSICMD_DATA,0x38},

{DSICMD_CMD,0xB0},
{DSICMD_DATA,0x00},  
{DSICMD_DATA,0x11},  
{DSICMD_DATA,0x19},  
{DSICMD_DATA,0x0C},  
{DSICMD_DATA,0x10},  
{DSICMD_DATA,0x06},  
{DSICMD_DATA,0x07},  
{DSICMD_DATA,0x0A},  
{DSICMD_DATA,0x09},  
{DSICMD_DATA,0x22},  
{DSICMD_DATA,0x04},  
{DSICMD_DATA,0x10},  
{DSICMD_DATA,0x0E},  
{DSICMD_DATA,0x28},  
{DSICMD_DATA,0x30},  
{DSICMD_DATA,0x1C}, 
 
{DSICMD_CMD,0xB1},
{DSICMD_DATA,0x00},  
{DSICMD_DATA,0x12},  
{DSICMD_DATA,0x19},  
{DSICMD_DATA,0x0D},  
{DSICMD_DATA,0x10},  
{DSICMD_DATA,0x04},  
{DSICMD_DATA,0x06},  
{DSICMD_DATA,0x07},  
{DSICMD_DATA,0x08},  
{DSICMD_DATA,0x23},  
{DSICMD_DATA,0x04},  
{DSICMD_DATA,0x12},  
{DSICMD_DATA,0x11},  
{DSICMD_DATA,0x28},  
{DSICMD_DATA,0x30},  
{DSICMD_DATA,0x1C},  


{DSICMD_CMD,0xFF},
{DSICMD_DATA,0x77},  
{DSICMD_DATA,0x01},  
{DSICMD_DATA,0x00},  
{DSICMD_DATA,0x00},  
{DSICMD_DATA,0x11},    // enable  bk fun of  command 2  BK1


{DSICMD_CMD,0xB0},
{DSICMD_DATA,0x4D},  

{DSICMD_CMD,0xB1}, 
{DSICMD_DATA,0x60}, //0x56  0x4a  0x5b


{DSICMD_CMD,0xB2},  
{DSICMD_DATA,0x07},  
{DSICMD_CMD,0xB3},  
{DSICMD_DATA,0x80},  
{DSICMD_CMD,0xB5},  
{DSICMD_DATA,0x47},  
{DSICMD_CMD,0xB7},
{DSICMD_DATA,0x8A},  
{DSICMD_CMD,0xB8}, 
{DSICMD_DATA,0x21},  
{DSICMD_CMD,0xC1},
{DSICMD_DATA,0x78},  

{DSICMD_CMD,0xC2},  
{DSICMD_DATA,0x78},  
{DSICMD_CMD,0xD0},
{DSICMD_DATA,0x88},  
{CMDDELAY_MS,100}, 


{DSICMD_CMD,0xE0}, 
{DSICMD_DATA,0x00},  
{DSICMD_DATA,0x00},  
{DSICMD_DATA,0x02},
 
{DSICMD_CMD,0xE1},
{DSICMD_DATA,0x01},
{DSICMD_DATA,0xA0},
{DSICMD_DATA,0x03},
{DSICMD_DATA,0xA0},  
{DSICMD_DATA,0x02},
{DSICMD_DATA,0xA0},
{DSICMD_DATA,0x04},
{DSICMD_DATA,0xA0},
{DSICMD_DATA,0x00},
{DSICMD_DATA,0x44},
{DSICMD_DATA,0x44},
  
{DSICMD_CMD,0xE2}, 
{DSICMD_DATA,0x00},
{DSICMD_DATA,0x00},
{DSICMD_DATA,0x00},
{DSICMD_DATA,0x00},
{DSICMD_DATA,0x00},
{DSICMD_DATA,0x00},
{DSICMD_DATA,0x00}, 
{DSICMD_DATA,0x00},
{DSICMD_DATA,0x00}, 
{DSICMD_DATA,0x00},
{DSICMD_DATA,0x00},
{DSICMD_DATA,0x00},
  
{DSICMD_CMD,0xE3},
{DSICMD_DATA,0x00},
{DSICMD_DATA,0x00}, 
{DSICMD_DATA,0x33},
{DSICMD_DATA,0x33},
 
{DSICMD_CMD,0xE4},
{DSICMD_DATA,0x44},
{DSICMD_DATA,0x44},
 
{DSICMD_CMD,0xE5},
{DSICMD_DATA,0x01},
{DSICMD_DATA,0x26},
{DSICMD_DATA,0xA0},  
{DSICMD_DATA,0xA0}, 
{DSICMD_DATA,0x03},
{DSICMD_DATA,0x28},
{DSICMD_DATA,0xA0},
{DSICMD_DATA,0xA0}, 
{DSICMD_DATA,0x05},
{DSICMD_DATA,0x2A}, 
{DSICMD_DATA,0xA0}, 
{DSICMD_DATA,0xA0}, 
{DSICMD_DATA,0x07},
{DSICMD_DATA,0x2C},
{DSICMD_DATA,0xA0},
{DSICMD_DATA,0xA0},
  
{DSICMD_CMD,0xE6},
{DSICMD_DATA,0x00},
{DSICMD_DATA,0x00},
{DSICMD_DATA,0x33},
{DSICMD_DATA,0x33},
 
{DSICMD_CMD,0xE7},
{DSICMD_DATA,0x44},
{DSICMD_DATA,0x44},
 
{DSICMD_CMD,0xE8},
{DSICMD_DATA,0x02}, 
{DSICMD_DATA,0x26}, 
{DSICMD_DATA,0xA0}, 
{DSICMD_DATA,0xA0},
{DSICMD_DATA,0x04},
{DSICMD_DATA,0x28},
{DSICMD_DATA,0xA0}, 
{DSICMD_DATA,0xA0}, 
{DSICMD_DATA,0x06},
{DSICMD_DATA,0x2A}, 
{DSICMD_DATA,0xA0}, 
{DSICMD_DATA,0xA0}, 
{DSICMD_DATA,0x08},
{DSICMD_DATA,0x2C},
{DSICMD_DATA,0xA0},
{DSICMD_DATA,0xA0}, 
 
{DSICMD_CMD,0xEB}, 
{DSICMD_DATA,0x00},
{DSICMD_DATA,0x01},
{DSICMD_DATA,0xE4},
{DSICMD_DATA,0xE4},
{DSICMD_DATA,0x44},
{DSICMD_DATA,0x00}, 
{DSICMD_DATA,0x40},  

{DSICMD_CMD,0xED},
{DSICMD_DATA,0xFF},
{DSICMD_DATA,0xF7},  
{DSICMD_DATA,0x65},
{DSICMD_DATA,0x4F}, 
{DSICMD_DATA,0x0B},
{DSICMD_DATA,0xA1},
{DSICMD_DATA,0xCF},
{DSICMD_DATA,0xFF},
{DSICMD_DATA,0xFF},
{DSICMD_DATA,0xFC},
{DSICMD_DATA,0x1A},
{DSICMD_DATA,0xB0},
{DSICMD_DATA,0xF4},
{DSICMD_DATA,0x56},
{DSICMD_DATA,0x7F},
{DSICMD_DATA,0xFF},


{DSICMD_CMD,0xFF},  
{DSICMD_DATA,0x77},  
{DSICMD_DATA,0x01},  
{DSICMD_DATA,0x00},  
{DSICMD_DATA,0x00},  
{DSICMD_DATA,0x00},

{DSICMD_CMD,0x36},  // //U&D  Y-DIR
{DSICMD_DATA,0x10},   //rotate 0: 0x00 : rotate 180 :0x10

{DSICMD_CMD,0x3A},  
{DSICMD_DATA,0x55},


{DSICMD_CMD,0x29},

      对应的初始化序列

      	{0x01, 1, {0x00} },
	{REGFLAG_DELAY, REGFLAG_DELAY, {120} },

	{0x11, 1, {0x00} },
	{REGFLAG_DELAY, REGFLAG_DELAY, {120} },

	{0xff, 5, {0x77, 0x01, 0x00, 0x00, 0x11} },
	{0xd1, 1, {0x11} },
	{0x55, 1, {0xb0} },

	{0xff, 5, {0x77, 0x01, 0x00, 0x00, 0x10} },
	{0xc0, 2, {0x63, 0x00} }, // SCNL = (0x63 + 1) * 8 = 800
	{0xc1, 2, {0x09, 0x02} }, // VFB=0x09  VBF=0x02
	{0xc2, 2, {0x37, 0x08} }, // PCLK= 512 + (0x08 * 16) = 640

	{0xc7, 1, {0x00} }, // x-dir  rotate 0 : 0x00     rotate 180 :0x04

	{0xcc, 1, {0x38} },

	{0xb0, 16, {0x00, 0x11, 0x19, 0x0c, 0x10, 0x06, 0x07, 0x0a, 0x09, 0x22,
		   0x04, 0x10, 0x0e, 0x28, 0x30, 0x1c} },

	{0xb1, 16, {0x00, 0x12, 0x19, 0x0d, 0x10, 0x04, 0x06, 0x07, 0x08, 0x23,
		    0x04, 0x12, 0x11, 0x28, 0x30, 0x1c} },

	{0xff, 5, {0x77, 0x01, 0x00, 0x00, 0x11} }, //  enable  bk fun of  command 2  BK1
	{0xb0, 1, {0x4d} },
	{0xb1, 1, {0x5b} }, // 0x56  0x4a  0x5b
	{0xb2, 1, {0x07} },
	{0xb3, 1, {0x80} },
	{0xb5, 1, {0x47} },
	{0xb7, 1, {0x8a} },
	{0xb8, 1, {0x21} },
	{0xc1, 1, {0x78} },
	{0xc2, 1, {0x78} },
	{0xd0, 1, {0x88} },
	{REGFLAG_DELAY, REGFLAG_DELAY, {100} },

	{0xe0, 3, {0x00, 0x00, 0x02} },
	{0xe1, 11, {0x01, 0xa0, 0x03, 0xa0, 0x02, 0xa0, 0x04, 0xa0, 0x00, 0x44,
		    0x44} },
	{0xe2, 12, {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
		    0x00, 0x00} },
	{0xe3, 4, {0x00, 0x00, 0x33, 0x33} },
	{0xe4, 2, {0x44, 0x44} },
	{0xe5, 16, {0x01, 0x26, 0xa0, 0xa0, 0x03, 0x28, 0xa0, 0xa0, 0x05, 0x2a,
		    0xa0, 0xa0, 0x07, 0x2c, 0xa0, 0xa0} },
	{0xe6, 4, {0x00, 0x00, 0x33, 0x33} },
	{0xe7, 2, {0x44, 0x44} },
	{0xe8, 16, {0x02, 0x26, 0xa0, 0xa0, 0x04, 0x28, 0xa0, 0xa0, 0x06, 0x2a,
		    0xa0, 0xa0, 0x08, 0x2c, 0xa0, 0xa0} },
	{0xeb, 7, {0x00, 0x01, 0xe4, 0xe4, 0x44, 0x00, 0x40} },
	{0xed, 16, {0xff, 0xf7, 0x65, 0x4f, 0x0b, 0xa1, 0xcf, 0xff, 0xff, 0xfc,
		    0x1a, 0xb0, 0xf4, 0x56, 0x7f, 0xff} },

	{0xff, 5, {0x77, 0x01, 0x00, 0x00, 0x00} },
	{0x36, 1, {0x00} }, // U&D  Y-DIR  rotate 0: 0x00 : rotate 180 :0x10
	{0x3a, 1, {0x55} },
	{0x29, 1, {0x00} },
	{REGFLAG_END_OF_TABLE, REGFLAG_END_OF_TABLE, {} }
      1 条回复 最后回复 回复 引用 分享 1
      • aozima
        aozima LV 7 最后由 编辑

        如果不通，一般怎么调呢？

        有什么爬坑经验吗？

        YuzukiTsuru R 2 条回复 最后回复 回复 引用 分享 0
        • YuzukiTsuru
          柚木 鉉 LV 9 @aozima 最后由 编辑

          @aozima 玄学（（有些时候改了一个参数他就好了hhhh

          1 条回复 最后回复 回复 引用 分享 0
          • R
            Readme0 LV 5 @aozima 最后由 编辑

            @aozima
            之前踩过一点坑，这种dsi初始化一般是低速信号，可以用逻辑分析仪抓一下dsi协议，看看配置有没有问题。一般来说配置对了屏可以点亮，可以输出一些纯色信号进行验证；配置严格按照要求来了还点不亮的话就难搞了

            U 1 条回复 最后回复 回复 引用 分享 1
            • U
              uuuuid LV 6 @Readme0 最后由 编辑

              @readme0
              请问什么逻辑分析仪可以抓DSI数据？

              R 1 条回复 最后回复 回复 引用 分享 0
              • R
                Readme0 LV 5 @uuuuid 最后由 编辑

                @uuuuid
                之前用的是屏厂的一款分析仪抓的，我看了下我的这款也有mipi dsi
                26feb2b2-9725-4e09-9149-cfdab9d9a55f-image.png

                https://dreamsourcelab.cn/product/dslogic-series/

                1 条回复 最后回复 回复 引用 分享 0
                • Referenced by  KunYi KunYi 
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