Based on Kernel commit 20ff2fe60a: serial: imx: add support for DTE mode
Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
---
drivers/serial/serial_imx.c | 11 +++++++++--
include/serial/imx-uart.h | 1 +
2 files changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/serial/serial_imx.c b/drivers/serial/serial_imx.c
index 68b438b..563813a 100644
--- a/drivers/serial/serial_imx.c
+++ b/drivers/serial/serial_imx.c
@@ -55,6 +55,7 @@ static struct imx_serial_devtype_data imx21_data = {
struct imx_serial_priv {
struct console_device cdev;
int baudrate;
+ int dte_mode;
struct notifier_block notify;
void __iomem *regs;
struct clk *clk;
@@ -93,9 +94,12 @@ static int imx_serial_init_port(struct console_device *cdev)
writel(0, regs + UBMR);
writel(0, regs + priv->devtype->uts);
-
/* Configure FIFOs */
- writel(0xa81, regs + UFCR);
+ val = 0xa81;
+ if (priv->dte_mode)
+ val |= UFCR_DCEDTE;
+
+ writel(val, regs + UFCR);
if (priv->devtype->onems)
@@ -240,6 +244,9 @@ static int imx_serial_probe(struct device_d *dev)
}
}
+ if (of_property_read_bool(dev->device_node, "fsl,dte-mode"))
+ priv->dte_mode = 1;
+
imx_serial_init_port(cdev);
/* Enable UART */
diff --git a/include/serial/imx-uart.h b/include/serial/imx-uart.h
index 8faa12f..29b117c 100644
--- a/include/serial/imx-uart.h
+++ b/include/serial/imx-uart.h
@@ -84,6 +84,7 @@
#define UFCR_RFDIV2 (0b100<<7) /* Reference freq divider mask */
#define UFCR_RFDIV1 (0b101<<7) /* Reference freq divider mask */
#define UFCR_RFDIV7 (0b110<<7) /* Reference freq divider mask */
+#define UFCR_DCEDTE (1<<6) /* DCE/DTE mode select */
#define UFCR_TXTL_SHF 10 /* Transmitter trigger level shift */
#define USR1_PARITYERR (1<<15) /* Parity error interrupt flag */
#define USR1_RTSS (1<<14) /* RTS pin status */
--
2.7.0
_______________________________________________
barebox mailing list
barebox@xxxxxxxxxxxxxxxxxxx
http://lists.infradead.org/mailman/listinfo/barebox
