From: Sascha Hauer <s.hauer@pengutronix.de>
To: Barebox List <barebox@lists.infradead.org>
Subject: [PATCH] serial: imx: Support DTE mode
Date: Thu, 25 Feb 2016 07:50:35 +0100 [thread overview]
Message-ID: <1456383035-28145-1-git-send-email-s.hauer@pengutronix.de> (raw)
Based on Kernel commit 20ff2fe60a: serial: imx: add support for DTE mode
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
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@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox
reply other threads:[~2016-02-25 6:50 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1456383035-28145-1-git-send-email-s.hauer@pengutronix.de \
--to=s.hauer@pengutronix.de \
--cc=barebox@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox