tree e565625b28c6731e4f9d8a9adb1caca0b5534b00
parent 25b7ce32871f94b96385b31e4bd6b1fd830cccd7
author Johannes Schneider <johannes.schneider@leica-geosystems.com> 1662466504 +0200
committer Stefano Babic <sbabic@denx.de> 1663534570 +0200

serial: mxc: have putc use the TXFIFO

only waiting for TXEMPTY leads to corrupted messages going over the
wire - which is fixed by making use of the FIFO

this change is following the linux kernel uart driver
(drivers/tty/serial/imx.c), which also checks UTS_TXFULL
instead of UTS_TXEMPTY

Signed-off-by: Johannes Schneider <johannes.schneider@leica-geosystems.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Fabio Estevam <festevam@denx.de>