On Thu, Jan 12, 2023 at 2:19 PM Loic Poulain <[email protected]> wrote: > > The u-boot console may show some corrupted characters when > printing in board_init() due to reset or baudrate change > of the UART (probe) before the TX FIFO has been completely > drained. > > To fix this issue, and in case UART is still running, we now > try to flush the FIFO before proceeding to UART reinitialization. > For this we're waiting for Transmitter Complete bit, indicating > that the FIFO and the shift register are empty. > > flushing has a 4ms timeout guard, which is normally more than > enough to consume the FIFO @ low baudrate (9600bps). > > Signed-off-by: Loic Poulain <[email protected]> > Tested-by: Lothar Waßmann <[email protected]>
Reviewed-by: Fabio Estevam <[email protected]>
