i.MX7 MIPI-DSI failed, due to lack of Data ID in the packet header.

[toshiharu_shimi]

Hi,
My producs has LCD whch is drived through MIPI-DSI. 
Some products failed display the LCD due to lack of header packet  "Data ID" on the MIPI data lane.
Although I store the correct data to the "Packet Header FIFO Register(MIPI_DSI_PKTHDR)" .
This problem is more likely to occur at higher temperatures.
Is there any workaround?

[joanxie]

could you reproduce this on nxp imx7d board? if yes, pls tell me how to reproduce this

[toshiharu_shimi]

Thank you for your reply.

I think it is diffficult to reproduce on nxp imx7d board, because this issue does't occur with all products.

I have already produced our products over a thousand units,  but only 4 products have this problem. 

I found that this ploblem depend on the timing of enabling  'CLK_LPCG_MIPI_MEM_PHY'.

So that I will check the clock route tree of MIPI and LCD modules.

Can you think of any reasons?

[joanxie]

I didn't find this issue before, if couldn't reproduce this issue on nxp board, it's hard to tell the reason