Hi Bastien, On Fri, 5 Apr 2024 14:05:52 +0200 Bastien Curutchet <bastien.curutchet@xxxxxxxxxxx> wrote: > The UART's input clock rate can change at runtime but this is not > handled by the driver. > > Add a clock_notifier callback that updates the divisors when the input > clock is updated. The serial8250_update_uartclk() is used to do so. > PRE_RATE_CHANGE and ABORT_RATE_CHANGE notifications are ignored, only > the POST_RATE_CHANGE is used. Not using PRE_RATE_CHANGE notification can > result in a few corrupted bytes during frequency transitions but, IMHO, > it can be acceptable in many use cases. > > It has been tested on a DAVINCI/OMAP-L138 processor. > > Signed-off-by: Bastien Curutchet <bastien.curutchet@xxxxxxxxxxx> Reviewed-by: Herve Codina <herve.codina@xxxxxxxxxxx> Best regards, Hervé
