Phil Elwell

I still say that using a powered hub, rather than expecting the Pi to route sufficient power out of its USB ports, would probably solve your problems.

This is only measuring the voltage at one place. It helps to picture the voltage in the system as the depth of water in a bath, etc., as multiple plugs...

In case anyone thinks it's simply a matter of removing the error return, the missing interrupt would need to be replaced with a timer that polls for events - it...

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...

> Is there workaround for an existing released kernel? Not really, no, other than to run it slower. You may be able to improve matters by forcing an internal pull-down...

We are not dropping support for Pi Zero. Did you reboot after the update?

> the website says that Raspberry Pi OS legacy is still on kernel version 6.1 Indeed it does.

I think it's worse than you describe, because aren't the `UU`s in `70: UU -- -- -- UU -- -- --` the PCF9548s themselves?

> Addresses used on the parent bus will also be reserved on all child buses. I guess that is required, otherwise there would be no way to say "I want...

I've merged #6040 and rebased #6038 on top of it. As usual, it will take about 45 minutes for the auto-builds to complete, then `sudo rpi-update pulls/6038` again. (If you...