linux-kernel - [PATCH 3.10 36/41] ARC: [nsimosci] Unbork console

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Date:	Fri, 11 Apr 2014 09:10:07 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Vineet Gupta <vgupta@...opsys.com>,
	Francois Bedard <Francois.Bedard@...opsys.com>
Subject: [PATCH 3.10 36/41] ARC: [nsimosci] Unbork console

3.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Vineet Gupta <vgupta@...opsys.com>

commit 61fb4bfc010b0d2940f7fd87acbce6a0f03217cb upstream.

Despite the switch to right UART driver (prev patch), serial console
still doesn't work due to missing CONFIG_SERIAL_OF_PLATFORM

Also fix the default cmdline in DT to not refer to out-of-tree
ARC framebuffer driver for console.

Signed-off-by: Vineet Gupta <vgupta@...opsys.com>
Cc: Francois Bedard <Francois.Bedard@...opsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/arc/boot/dts/nsimosci.dts      |    5 ++++-
 arch/arc/configs/nsimosci_defconfig |    1 +
 2 files changed, 5 insertions(+), 1 deletion(-)

--- a/arch/arc/boot/dts/nsimosci.dts
+++ b/arch/arc/boot/dts/nsimosci.dts
@@ -17,7 +17,10 @@
 	interrupt-parent = <&intc>;
 
 	chosen {
-		bootargs = "console=tty0 consoleblank=0";
+		/* this is for console on PGU */
+		/* bootargs = "console=tty0 consoleblank=0"; */
+		/* this is for console on serial */
+		bootargs = "earlycon=uart8250,mmio32,0xc0000000,115200n8 console=ttyS0,115200n8 consoleblank=0 debug";
 	};
 
 	aliases {
--- a/arch/arc/configs/nsimosci_defconfig
+++ b/arch/arc/configs/nsimosci_defconfig
@@ -54,6 +54,7 @@ CONFIG_SERIO_ARC_PS2=y
 CONFIG_SERIAL_8250=y
 CONFIG_SERIAL_8250_CONSOLE=y
 CONFIG_SERIAL_8250_DW=y
+CONFIG_SERIAL_OF_PLATFORM=y
 CONFIG_SERIAL_ARC=y
 CONFIG_SERIAL_ARC_CONSOLE=y
 # CONFIG_HW_RANDOM is not set


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