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

[Afzal Mohammed <afzal@ti.com>]

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@ti.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