Hi,
the commit for 4.9.89
index 521a6e4..f575a33 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
removes the
- temp |= IMX21_UCR3_RXDMUXSEL ...
and only enable it back if the serial port is in dte_mode at later code
this result in the error that a 'non dte' serial port can't receive, no RXDMUXEL.
The fix is to add IMX21_UCR3_RXDMUXSEL .
--- linux-4.9/drivers/tty/serial/imx.c.orig 2018-04-19 12:19:58.512000000 +0800
+++ linux-4.9/drivers/tty/serial/imx.c 2018-04-19 12:07:26.344000000 +0800
@@ -1316,7 +1316,7 @@
if (!is_imx1_uart(sport)) {
temp = readl(sport->port.membase + UCR3);
- temp |= UCR3_DTRDEN | UCR3_RI | UCR3_DCD;
+ temp |= IMX21_UCR3_RXDMUXSEL | UCR3_DTRDEN | UCR3_RI | UCR3_DCD;
if (sport->dte_mode)
/* disable broken interrupts */
Tested on a IMX6DL
Please consider to add this patch for me. I do not have a actual linux-next tree
to create a patch-set from git.
Regards
Chris
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