i2c_designware: controller timed out when DSI LCD is plugged in about linux

[6by9]

You already have a discussion going on the forums over this - https://forums.raspberrypi.com/viewtopic.php?t=366281.

Please don't duplicate issues between the forums and Github, and certainly not without providing a link to the other discussion, otherwise you just waste other people's time.

[mozcelikors]

Problem is fixed when Linux kernel is downgraded to 6.1.63 (official Bookworm kernel version that worked). I guess the fixes in i2c_designware that was introduced after 6.1.63 doesn't really get along with some of the devices.

[Tiger0215]

Problem is fixed when Linux kernel is downgraded to 6.1.63 (official Bookworm kernel version that worked). I guess the fixes in i2c_designware that was introduced after 6.1.63 doesn't really get along with some of the devices.

I encountered the same issue as you, and when I ran the fix by @pelwell, the problem was perfectly resolved:
"There's a PR (#6050) that may help with this issue. Similar failures are seen when the device fails to ACK data in time, and the PR changes the mark/space ratio on SCL to give the device longer to respond at any given clock speed.

You can install a trial, beta kernel containing the fix by running sudo rpi-update pulls/6050. Take care to back up any important data in your image before updating in case there is a regression."