linux-kernel - [PATCH 2/2] serial: atmel: add support for new UART version

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Message-ID: <93f5f783fd232d9dfe99e7d6f1fdc6c92adb7c46.1453743308.git.nicolas.ferre@atmel.com>
Date:	Mon, 25 Jan 2016 18:38:02 +0100
From:	Nicolas Ferre <nicolas.ferre@...el.com>
To:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	<linux-arm-kernel@...ts.infradead.org>
CC:	<linux-kernel@...r.kernel.org>, <linux-serial@...r.kernel.org>,
	<jslaby@...e.com>, <davidm@...uge.net>,
	Nicolas Ferre <nicolas.ferre@...el.com>
Subject: [PATCH 2/2] serial: atmel: add support for new UART version

Starting with sama5d2, the new UART revision has an hardware timer. So, add it
to the IP detection code and set the "has_hw_timer" property for it.

Signed-off-by: Nicolas Ferre <nicolas.ferre@...el.com>
Reported-by: David Mosberger <davidm@...uge.net>
---
 drivers/tty/serial/atmel_serial.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/tty/serial/atmel_serial.c b/drivers/tty/serial/atmel_serial.c
index de5d32c31179..fab135824679 100644
--- a/drivers/tty/serial/atmel_serial.c
+++ b/drivers/tty/serial/atmel_serial.c
@@ -1714,11 +1714,12 @@ static void atmel_get_ip_name(struct uart_port *port)
 	/* ASCII decoding for IP version */
 	usart = 0x55534152;	/* USAR(T) */
 	dbgu_uart = 0x44424755;	/* DBGU */
+	new_uart = 0x55415254;	/* UART */
 
 	atmel_port->has_hw_timer = false;
 
-	if (name == usart) {
-		dev_dbg(port->dev, "Usart with hw timer\n");
+	if (name == usart || name == new_uart) {
+		dev_dbg(port->dev, "Usart or uart with hw timer\n");
 		atmel_port->has_hw_timer = true;
 	} else if (name == dbgu_uart) {
 		dev_dbg(port->dev, "Dbgu or uart without hw timer\n");
-- 
2.1.3