> 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]> > Acked-by: Pali Rohár <[email protected]> > Reviewed-by: Fabio Estevam <[email protected]> Applied to u-boot-imx, master, thanks !
Best regards, Stefano Babic -- ===================================================================== DENX Software Engineering GmbH, Managing Director: Erika Unter HRB 165235 Munich, Office: Kirchenstr.5, 82194 Groebenzell, Germany Phone: +49-8142-66989-53 Fax: +49-8142-66989-80 Email: [email protected] =====================================================================
