linux-kernel - [PATCH 9/9] serial/arc: Add DT based earlycon support

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Date:	Thu, 12 Jun 2014 16:01:39 +0530
From:	Vineet Gupta <Vineet.Gupta1@...opsys.com>
To:	Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>,
	"Mark Rutland" <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jslaby@...e.cz>, Paul Bolle <pebolle@...cali.nl>
CC:	<devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<linux-serial@...r.kernel.org>, <Francois.Bedard@...opsys.com>,
	Vineet Gupta <Vineet.Gupta1@...opsys.com>
Subject: [PATCH 9/9] serial/arc: Add DT based earlycon support

Signed-off-by: Vineet Gupta <vgupta@...opsys.com>
---
 arch/arc/boot/dts/angel4.dts  | 3 ++-
 drivers/tty/serial/arc_uart.c | 1 +
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/arc/boot/dts/angel4.dts b/arch/arc/boot/dts/angel4.dts
index 6b57475967a6..e9fc270d1e0b 100644
--- a/arch/arc/boot/dts/angel4.dts
+++ b/arch/arc/boot/dts/angel4.dts
@@ -17,7 +17,8 @@
 	interrupt-parent = <&intc>;
 
 	chosen {
-		bootargs = "earlycon=arc_uart,mmio32,0xc0fc1000,115200n8 console=ttyARC0,115200n8";
+		bootargs = "earlycon console=ttyARC0,115200n8";
+		stdout-path = &arcuart0;
 	};
 
 	aliases {
diff --git a/drivers/tty/serial/arc_uart.c b/drivers/tty/serial/arc_uart.c
index 435de4f2af3b..d9900cb3e7b6 100644
--- a/drivers/tty/serial/arc_uart.c
+++ b/drivers/tty/serial/arc_uart.c
@@ -579,6 +579,7 @@ static int __init arc_early_console_setup(struct earlycon_device *dev,
 	return 0;
 }
 EARLYCON_DECLARE(arc_uart, arc_early_console_setup);
+OF_EARLYCON_DECLARE(arc_uart, "snps,arc-uart", arc_early_console_setup);
 
 #endif	/* CONFIG_SERIAL_ARC_CONSOLE */
 
-- 
1.8.3.2

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