i.MX ProcessorsのトピックRe: The mipi output problem

The mipi output problem

pingyuchen — Tue, 18 Dec 2018 09:43:50 GMT

Hi，

Now I use the imx8mq evk board to test the mipi output. I use boot-imx8mq-mipi-panel.img and can measure the mipi signal when the board is booted. But I find the mipi signal isn't output when the board is resumed from the suspend mode by ON/OFF button. Where can I modify to fix this problem?

Best Regards,

Re: The mipi output problem

igorpadykov — Tue, 18 Dec 2018 23:19:05 GMT

Hi pingyu

this issue is described in Table 13. Known issues and workarounds for i.MX 8MQuad

attached Release Notes.

Best regards
igor
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Re: The mipi output problem

pingyuchen — Wed, 19 Dec 2018 01:44:09 GMT

Hi Igor,

Thank you for your response. By the way, is there a scheduler for the new release? And can this issue be solved in the new release if we need the system suspending and resuming?

Re: The mipi output problem

igorpadykov — Thu, 20 Dec 2018 03:27:45 GMT

Hi pingyu

one can try attached patch and Linux L4.9.123

linux-imx - i.MX Linux kernel

Best regards
igor

Re: The mipi output problem

pingyuchen — Thu, 20 Dec 2018 08:20:45 GMT

Hi igor,

I used the patch and this issue is fixed.

Thank you very much!