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Yli.8
Yli.8
Associate III
April 2, 2020
Question

stm32mp157c HDMI

  • April 2, 2020
  • 1 reply
  • 1094 views

I designed a board based on the schematic of dk1, but I2C failed on HDMI output0693W000000VBcXQAW.png

This topic has been closed for replies.

1 reply

PatrickF
PatrickF
Technical Moderator
April 2, 2020

Seems very same issue than (unsolved) https://community.st.com/s/question/0D50X0000BmoRU0SQM/stm32mp157-sii9022-i2c-always-busy

Did you use latest v1.2.0 delivery ?

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Yli.8
Yli.8Author
Associate III
April 3, 2020

hi，

​ I feel your reply very much, but it seems that the problem has not been solved.

I am really describing the problem, I use HDMI direct connection monitor is good.But I get iic errors when I use HDMI to VGA.

I tested both the 4.19.9 kernel and the 4.19.94 kernel.

I also found some errors in the iic of dk1, see the following picture

0693W000000VHoeQAG.png

0693W000000VHotQAG.png

0693W000000VHp8QAG.png

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