Re: serial console on Pi Zero W

[Jason Thorpe <thorpej%me.com@localhost>]

> On Aug 23, 2021, at 10:10 AM, Brad Spencer <brad%anduin.eldar.org@localhost> wrote:
> 
> Speed shifting... due to the CPU speed changing...
> 
> If this is a "normal" install there may be a sysctl towards the end of
> the boot that changes the speed of the CPU ...  it used to be that this
> didn't matter, but more lately when this sysctl is done it messes with
> the baud rate of the serial port.  You can get your messages, but you
> have to remove that sysctl stuff (forgotten which.. might be in
> /etc/rc.local)...  I suspect that there may be way to use a dtb to use
> the full serial port and perhaps lose bluetooth or something, but it may
> be worth it depending on your use case.

Has someone filed a bug about this?  We need to have a way to update the serial driver's notion of the clock when this happens.

-- thorpej