[3.11.y.z extended stable] Patch "ARC: [nsimosci] Change .dts to use generic 8250 UART" has been added to staging queue

[Luis Henriques]

This is a note to let you know that I have just added a patch titled

    ARC: [nsimosci] Change .dts to use generic 8250 UART

to the linux-3.11.y-queue branch of the 3.11.y.z extended stable tree 
which can be found at:

 http://kernel.ubuntu.com/git?p=ubuntu/linux.git;a=shortlog;h=refs/heads/linux-3.11.y-queue

If you, or anyone else, feels it should not be added to this tree, please 
reply to this email.

For more information about the 3.11.y.z tree, see
https://wiki.ubuntu.com/Kernel/Dev/ExtendedStable

Thanks.
-Luis

------

>From c12ce075a98bdd77a58e966e42d079b49e7b068d Mon Sep 17 00:00:00 2001
From: Mischa Jonker <mjonker at synopsys.com>
Date: Thu, 16 May 2013 19:36:08 +0200
Subject: ARC: [nsimosci] Change .dts to use generic 8250 UART

commit 6eda477b3c54b8236868c8784e5e042ff14244f0 upstream.

The Synopsys APB DW UART has a couple of special features that are not
in the System C model. In 3.8, the 8250_dw driver didn't really use these
features, but from 3.9 onwards, the 8250_dw driver has become incompatible
with our model.

Signed-off-by: Mischa Jonker <mjonker at synopsys.com>
Signed-off-by: Vineet Gupta <vgupta at synopsys.com>
Cc: Francois Bedard <Francois.Bedard at synopsys.com>
Signed-off-by: Luis Henriques <luis.henriques at canonical.com>
---
 arch/arc/boot/dts/nsimosci.dts | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/arch/arc/boot/dts/nsimosci.dts b/arch/arc/boot/dts/nsimosci.dts
index ea16d78..8bd238c 100644
--- a/arch/arc/boot/dts/nsimosci.dts
+++ b/arch/arc/boot/dts/nsimosci.dts
@@ -11,7 +11,7 @@

 / {
 	compatible = "snps,nsimosci";
-	clock-frequency = <80000000>;	/* 80 MHZ */
+	clock-frequency = <20000000>;	/* 20 MHZ */
 	#address-cells = <1>;
 	#size-cells = <1>;
 	interrupt-parent = <&intc>;
@@ -44,15 +44,14 @@
 		};

 		uart0: serial at c0000000 {
-			compatible = "snps,dw-apb-uart";
+			compatible = "ns8250";
 			reg = <0xc0000000 0x2000>;
 			interrupts = <11>;
-			#clock-frequency = <80000000>;
 			clock-frequency = <3686400>;
 			baud = <115200>;
 			reg-shift = <2>;
 			reg-io-width = <4>;
-			status = "okay";
+			no-loopback-test = <1>;
 		};

 		pgu0: pgu at c9000000 {
--
1.9.1