On Mon, Oct 21, 2024 at 01:17:55PM +0300, Ilpo Järvinen wrote: > On Mon, 21 Oct 2024, Inochi Amaoto wrote: > > On Mon, Oct 21, 2024 at 11:52:38AM +0300, Ilpo Järvinen wrote: > > > On Mon, 21 Oct 2024, Inochi Amaoto wrote: > > > > SG2044 relys on an internal divisor when calculating bitrate, which > > > > means a wrong clock for the most common bitrates. So add a quirk for > > > > this uart device to skip the set rate call and only relys on the > > > > internal UART divisor. > > > > > > > > Signed-off-by: Inochi Amaoto <inochiama@xxxxxxxxx> > > > > > > Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@xxxxxxxxxxxxxxx> > > > > > > I wonder though does this mean the numbers userspace can read from kernel > > > are bogus and if something can be done about that? > > > > I am not sure whether the clock rate can be read by the userspace. > > At least it report the right baud speed by using stty. > > Okay, I meant baud & other settings. Thanks for checking it. oBut there is clock rate for user space. I think Ilpo has a point. Documentation/ABI/testing/sysfs-tty:21:What: /sys/class/tty/ttyS<x>/uartclk -- With Best Regards, Andy Shevchenko
