* [PATCH] serial/imx: disable hardware flow control at startup
@ 2013-05-30 13:47 Markus Pargmann
0 siblings, 0 replies; only message in thread
From: Markus Pargmann @ 2013-05-30 13:47 UTC (permalink / raw)
To: linux-arm-kernel
From: Lucas Stach <l.stach@pengutronix.de>
We only want to enable hardware flow control if RTS/CTS pins
are connected.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
---
drivers/tty/serial/imx.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 147c9e1..8cdfbd3 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -761,6 +761,8 @@ static int imx_startup(struct uart_port *port)
temp = readl(sport->port.membase + UCR2);
temp |= (UCR2_RXEN | UCR2_TXEN);
+ if (!sport->have_rtscts)
+ temp |= UCR2_IRTS;
writel(temp, sport->port.membase + UCR2);
if (USE_IRDA(sport)) {
--
1.8.2.1
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2013-05-30 13:47 [PATCH] serial/imx: disable hardware flow control at startup Markus Pargmann
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