linux-kernel - [RFC 8/8] ARM: dts: am43-pre-silicon support

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Message-ID: <e344f74da47579c11db68d9f6efe25259ed7f25d.1361166003.git.afzal@ti.com>
Date:	Mon, 18 Feb 2013 12:00:46 +0530
From:	Afzal Mohammed <afzal@...com>
To:	<linux-omap@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<devicetree-discuss@...ts.ozlabs.org>, <linux-doc@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
CC:	Russell King <linux@....linux.org.uk>,
	Tony Lindgren <tony@...mide.com>,
	Marc Zyngier <marc.zyngier@....com>,
	Nicolas Pitre <nico@...aro.org>,
	Santosh Shilimkar <santosh.shilimkar@...com>,
	Will Deacon <will.deacon@....com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Rob Herring <rob.herring@...xeda.com>,
	Grant Likely <grant.likely@...retlab.ca>,
	Rob Landley <rob@...dley.net>, Sekhar Nori <nsekhar@...com>,
	Syed Mohammed Khasim <khasim@...com>
Subject: [RFC 8/8] ARM: dts: am43-pre-silicon support

AM43 SoC is in pre-silicon stage, meanwhile it has been modelled in
a pre-silicon platform. To validate and boot Linux in pre-silicon
platform that emulates an AM43 SoC, add DT build support.

As bootloader is not used, bootargs is passed through DT.

Note: This would be replaced by an original board support.

Signed-off-by: Afzal Mohammed <afzal@...com>
---
 arch/arm/boot/dts/Makefile             |  3 ++-
 arch/arm/boot/dts/am43-pre-silicon.dts | 31 +++++++++++++++++++++++++++++++
 2 files changed, 33 insertions(+), 1 deletion(-)
 create mode 100644 arch/arm/boot/dts/am43-pre-silicon.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 94d88b9..b434344 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -124,7 +124,8 @@ dtb-$(CONFIG_ARCH_OMAP2PLUS) += omap2420-h4.dtb \
 	omap5-evm.dtb \
 	am335x-evm.dtb \
 	am335x-evmsk.dtb \
-	am335x-bone.dtb
+	am335x-bone.dtb \
+	am43-pre-silicon.dtb
 dtb-$(CONFIG_ARCH_ORION5X) += orion5x-lacie-ethernet-disk-mini-v2.dtb
 dtb-$(CONFIG_ARCH_PRIMA2) += prima2-evb.dtb
 dtb-$(CONFIG_ARCH_U8500) += snowball.dtb \
diff --git a/arch/arm/boot/dts/am43-pre-silicon.dts b/arch/arm/boot/dts/am43-pre-silicon.dts
new file mode 100644
index 0000000..b9c6297
--- /dev/null
+++ b/arch/arm/boot/dts/am43-pre-silicon.dts
@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+/* AM43 Pre Silicon */
+
+/dts-v1/;
+
+/include/ "am4372.dtsi"
+
+/ {
+	model = "TI AM43 Pre Silicon";
+	compatible = "ti,am43-pre-silicon","ti,am4372","ti,am43";
+
+	memory {
+		device_type = "memory";
+		reg = <0x80000000 0x10000000>; /* 256 MB */
+	};
+
+	chosen {
+		bootargs = "console=ttyO0,115200n8 root=/dev/ram rw initrd=0x82000000,32MB earlyprintk";
+	};
+};
+
+&twd1 {
+	clock-frequency = <300000000>;
+};
-- 
1.7.12

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