On Thu, Nov 3, 2022 at 3:17 AM SCHNEIDER Johannes johannes.schneider@leica-geosystems.com wrote:
Hi all,
flushing and waiting... maybe you're onto something: what if one printf races another since it thinks considers its buffer handed to the FIFO as "done" a bit too soon?
might the below variation on "waiting for the fifo" solve the symptoms on imx6?
regards Johannes
diff --git a/drivers/serial/serial_mxc.c b/drivers/serial/serial_mxc.c index 4207650503..dfd7670f7e 100644 --- a/drivers/serial/serial_mxc.c +++ b/drivers/serial/serial_mxc.c @@ -329,8 +329,23 @@ static int mxc_serial_pending(struct udevice *dev, bool input) return sr2 & USR2_TXDC ? 0 : 1; }
+static ssize_t mxc_serial_puts(struct udevice *dev, const char *s, size_t len) +{
struct mxc_serial_plat *plat = dev_get_plat(dev);struct mxc_uart *const uart = plat->reg;while (*s)mcx_serial_putc(dev, *s++);
There is a typo here: it should be mxc_serial_putc() instead.
No, it does not fix the issue.
Not sure why you mentioned imx6. The issue can be reproduced on imx8mm as well.