On Friday, April 20, 2018 02:13 PM, Uwe Kleine-König wrote:
Hello Chris,
On Fri, Apr 20, 2018 at 09:07:59AM +0800, Chris Ruehl wrote:
Fix a problem introduced with
commit e61c38d85b73 ("serial: imx: setup DCEDTE early and ensure DCD and RI irqs to be off")
result in non dte-mode imx-uart fail receive data.
By add back IMX21_UCR3_RXDMUXSEL the serial port works as expected.
Signed-off-by: Chris Ruehl <chris.ruehl@xxxxxxxxxxxx>
---
drivers/tty/serial/imx.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 91f3a1a..3d09933 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -1391,7 +1391,7 @@ static int imx_uart_startup(struct uart_port *port)
ucr3 = imx_uart_readl(sport, UCR3);
- ucr3 |= UCR3_DTRDEN | UCR3_RI | UCR3_DCD;
+ ucr3 |= IMX21_UCR3_RXDMUXSEL | UCR3_DTRDEN | UCR3_RI | UCR3_DCD;
if (sport->dte_mode)
/* disable broken interrupts */
Doesn't 6df765dca378bddf994cfd2044acafa501bd800f fix this for you?
Best regards
Uwe
Uwe,
the patch you point out would fix that problem from what I can see.
But it not yet at the linux-next and since the error persists for 4.9.89
to present I filed a patch simple patch which fix my system.
Let me apply your patch and see if all works well then I fine to drop my
one liner.
Chris
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