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.schnei...@leica-geosystems.com>
Reviewed-by: Peng Fan <peng....@nxp.com>
Reviewed-by: Fabio Estevam <feste...@denx.de>
---
(no changes since v1)
drivers/serial/serial_mxc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/serial/serial_mxc.c b/drivers/serial/serial_mxc.c
index ee17a960d4..af1fd1ea9b 100644
--- a/drivers/serial/serial_mxc.c
+++ b/drivers/serial/serial_mxc.c
@@ -311,7 +311,7 @@ static int mxc_serial_putc(struct udevice *dev, const char
ch)
struct mxc_serial_plat *plat = dev_get_plat(dev);
struct mxc_uart *const uart = plat->reg;
- if (!(readl(&uart->ts) & UTS_TXEMPTY))
+ if (readl(&uart->ts) & UTS_TXFULL)
return -EAGAIN;
writel(ch, &uart->txd);
--
2.25.1
