LT9611 MIPI to HDMI chip, mature solution, provide technical support

9611 Debugging Instructions

After transplanting the provided 9611 Xintang MCU code, if the HDMI terminal cannot output the signal normally, you can use the following

2 aspects to rule out configuration problems:

1. Whether the resolution timing structure in the program corresponds exactly to the input MIPI signal:

2 . The settle parameter in the MIPI D-PHY parameter is used for 9611 to collect and analyze information such as the resolution of the input signal, and

The stable wake-up of PCR pixel information recovery is said to be very important. The registers in the figure below are different for 1080P60 resolution

The MIPI signal of the platform is generally configured with 0x08-0x10 , and you need to try it out. For other smaller resolutions, this parameter configuration

It should also be appropriately reduced:

void LT9611_Dphy_debug(void)
{ //The main thing is to get whether the positive and negative input is connected correctly, whether the sot of each lane is normal, if you can’t read any value, maybe the input A/B Port configuration is wrong // If you can’t extract it to distinguish The rate can be added to print, and the resolution can be extracted so you don’t need to look at the status of this part    #ifdef _mipi_Dphy_debug_    u8 temp;    HDMI_WriteI2C_Byte(0xff,0x83);    temp = HDMI_ReadI2C_Byte(0xbc);    if(temp == 0x55)    printf("\r\nport A lane PN is right");    else    printf("\r\nport A lane PN error 0x83bc = 0x%bx",temp);    temp = HDMI_ReadI2C_Byte(0x99);    if(temp == 0xb8)    printf("\r\ nport A lane 0 sot right ");    else    printf("\r\nport A lane 0 sot error = 0x%bx",temp);

   temp = HDMI_ReadI2C_Byte(0x9b);
   if(temp == 0xb8)
   printf("\r\nport A lane 1 sot right ");
   else
   printf("\r\nport A lane 1 sot error = 0x%bx",temp);

   temp = HDMI_ReadI2C_Byte(0x9d);
   if(temp == 0xb8)
   printf("\r\nport A lane 2 sot right ");
   else
   printf("\r\nport A lane 2 sot error = 0x%bx",temp);

   temp = HDMI_ReadI2C_Byte(0x9f);
   if(temp == 0xb8)
   printf("\r\nport A lane 3 sot right ");
   else
   printf("\r\nport A lane 3 sot error = 0x%bx",temp);

   printf("\r\nport A lane 0 settle = 0x%bx",HDMI_ReadI2C_Byte(0x98));
   printf("\r\nport A lane 1 settle = 0x%bx",HDMI_ReadI2C_Byte(0x9a));
    printf("\r\nport A lane 2 settle = 0x%bx",HDMI_ReadI2C_Byte(0x9c));
    printf("\r\nport A lane 3 settle = 0x%bx",HDMI_ReadI2C_Byte(0x9e));

#endif
}
void LT9611_Video_Check(void)
{ //Mainly to obtain whether the resolution resolved by mipi is normal, if not, you can check the configuration of settle and whether the channel is normal u8 mipi_video_format=0x00; u16 h_act, h_act_a ,h_act_b, v_act, v_tal; u16 h_total_sysclk;

   HDMI_WriteI2C_Byte(0xff,0x82); // top video check module
   h_total_sysclk = HDMI_ReadI2C_Byte(0x86);
   h_total_sysclk = (h_total_sysclk<<8) + HDMI_ReadI2C_Byte(0x87);
   printf("\33[32m");
   printf("\n-----------------------------------------------------------------------------");
   printf("\nLT9611_Video_Check: h_total_sysclk = %d",h_total_sysclk);

   v_act=HDMI_ReadI2C_Byte(0x82);
   v_act=(v_act<<8)+HDMI_ReadI2C_Byte(0x83);
   v_tal=HDMI_ReadI2C_Byte(0x6c);
   v_tal=(v_tal<<8)+HDMI_ReadI2C_Byte(0x6d);

   HDMI_WriteI2C_Byte(0xff,0x83);
   h_act_a = HDMI_ReadI2C_Byte(0x82);
   h_act_a = (h_act_a<<8)+HDMI_ReadI2C_Byte(0x83);

   h_act_b = HDMI_ReadI2C_Byte(0x86);
   h_act_b =(h_act_b<<8)+HDMI_ReadI2C_Byte(0x87);

   if(lt9611.input_color_space==YUV422)
   {
       printf("\nLT9611_Video_Check: lt9611.input_color_space = YUV422");
       h_act_a /= 2;
       h_act_b /= 2;
   }
   if(lt9611.input_color_space==RGB565)
   {
       printf("\nLT9611_Video_Check: lt9611.input_color_space = RGB565");
       h_act_a /= 2;
       h_act_b /= 2;
   }
   else if(lt9611.input_color_space==RGB888)
   {
       printf("\nLT9611_Video_Check: lt9611.input_color_space = RGB888");
      h_act_a /= 3;
           h_act_b /= 3;
   }

mipi_video_format=HDMI_ReadI2C_Byte(0x88);

   printf("\nLT9611_Video_Check: h_act_a, h_act_b, v_act, v_tal: %d, %d, %d, %d, ",h_act_a, h_act_b, v_act, v_tal);
   printf("\nLT9611_Video_Check: mipi_video_format: 0x%bx",mipi_video_format);

if(lt9611.mipi_port_cnt==dual_port_mipi)//if(0)//(P10 == 0) //dual port.
   h_act = h_act_a + h_act_b;
   else
   h_act = h_act_a;

printf("\r\nLT9611_Video_Check: Video_Format =");

LT9611 MIPI to HDMI chip, mature solution, provide technical support

Guess you like