[U-Boot] [PATCH 1/2] serial: mxc: support DTE mode

[Ryan Harkin]

Add DTE mode support via Kconfig on the MXC uart.

Signed-off-by: Ryan Harkin <ryan.harkin at linaro.org>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue at linaro.org>
---
 drivers/serial/Kconfig      |  7 +++++++
 drivers/serial/serial_mxc.c | 10 ++++++++--
 2 files changed, 15 insertions(+), 2 deletions(-)

diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 122b8e7..0df57c0 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -597,4 +597,11 @@ config SYS_SDMR
 	depends on MPC8XX_CONS
 	default 0
 
+config SERIAL_MXC_DTE_MODE
+	bool "Use DTE mode for the MXC UART"
+	default n
+	help
+	  This is used to set DTE mode on the serial console controlled by
+	  serial_mxc.c.
+
 endmenu
diff --git a/drivers/serial/serial_mxc.c b/drivers/serial/serial_mxc.c
index cce80a8..e7ea30c 100644
--- a/drivers/serial/serial_mxc.c
+++ b/drivers/serial/serial_mxc.c
@@ -111,6 +111,12 @@
 #define TXTL		2  /* reset default */
 #define RXTL		1  /* reset default */
 
+#ifdef CONFIG_SERIAL_MXC_DTE_MODE
+#define MXC_DTE_MODE	true
+#else
+#define MXC_DTE_MODE	false
+#endif
+
 DECLARE_GLOBAL_DATA_PTR;
 
 struct mxc_uart {
@@ -189,7 +195,7 @@ static void mxc_serial_setbrg(void)
 	if (!gd->baudrate)
 		gd->baudrate = CONFIG_BAUDRATE;
 
-	_mxc_serial_setbrg(mxc_base, clk, gd->baudrate, false);
+	_mxc_serial_setbrg(mxc_base, clk, gd->baudrate, MXC_DTE_MODE);
 }
 
 static int mxc_serial_getc(void)
@@ -367,7 +373,7 @@ static inline void _debug_uart_init(void)
 
 	_mxc_serial_init(base);
 	_mxc_serial_setbrg(base, CONFIG_DEBUG_UART_CLOCK,
-			   CONFIG_BAUDRATE, false);
+			   CONFIG_BAUDRATE, MXC_DTE_MODE);
 }
 
 static inline void _debug_uart_putc(int ch)
-- 
2.7.4