Messages in this thread | | | Subject | Re: [PATCH] serial: imx: enable IMX21_UCR3_RXDMUXSEL for non-dte-mode | From | Chris Ruehl <> | Date | Thu, 3 May 2018 14:13:53 +0800 |
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Hi Greg,
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@gtsys.com.hk> >> --- >> 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 >
The IMX serial driver is broken in the 4.9.x tree since 4.9.89. Uwe's patch
6df765dca378bddf994cfd2044acafa501bd800f
please apply to clear the situation.
I know you very busy! -
Chris
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