From fc1c1760de38823edbdc2cdd9606dff938a07f6e Mon Sep 17 00:00:00 2001
From: Fabio Estevam <festevam@denx.de>
Date: Tue, 8 Nov 2022 08:39:33 -0300
Subject: [PATCH] Revert "serial: mxc: have putc use the TXFIFO"
This reverts commit c7878a0483c59c48a730123bc0f4659fd40921bf.
Since commit c7878a0483c5 ("serial: mxc: have putc use the TXFIFO"),
serial console corruption can be seen when priting inside board_init().
Revert it to avoid the regression.
Reported-by: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Fabio Estevam <festevam@denx.de>
Acked-by: Tim Harvey <tharvey@gateworks.com>
---
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 4cf79c1ca2..82c0d84628 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_TXFULL)
+ if (!(readl(&uart->ts) & UTS_TXEMPTY))
return -EAGAIN;
writel(ch, &uart->txd);
--
2.39.5