[PATCH 3/4] ARM: sunxi: Add sun4i and cubieboard support

[Stefan Roese]

This patch adds support for the Cubieboard based on the Allwinner
A10/sun4i SoC. Currently only UART is supported. Other devices
will eventually follow.

Signed-off-by: Stefan Roese <sr at denx.de>
Cc: Maxime Ripard <maxime.ripard at free-electrons.com>
Cc: Arnd Bergmann <arnd at arndb.de>
---
 arch/arm/boot/dts/Makefile             |  3 ++-
 arch/arm/boot/dts/sun4i-cubieboard.dts | 38 ++++++++++++++++++++++++++++++++++
 arch/arm/boot/dts/sunxi.dtsi           |  9 ++++++++
 arch/arm/mach-sunxi/sunxi.c            |  1 +
 4 files changed, 50 insertions(+), 1 deletion(-)
 create mode 100644 arch/arm/boot/dts/sun4i-cubieboard.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 9b2d3f0..4dd567b 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -84,7 +84,8 @@ dtb-$(CONFIG_ARCH_SPEAR3XX)+= spear300-evb.dtb \
 	spear310-evb.dtb \
 	spear320-evb.dtb
 dtb-$(CONFIG_ARCH_SPEAR6XX)+= spear600-evb.dtb
-dtb-$(CONFIG_ARCH_SUNXI) += sun5i-olinuxino.dtb
+dtb-$(CONFIG_ARCH_SUNXI) += sun4i-cubieboard.dtb \
+	sun5i-olinuxino.dtb
 dtb-$(CONFIG_ARCH_TEGRA) += tegra20-harmony.dtb \
 	tegra20-medcom-wide.dtb \
 	tegra20-paz00.dtb \
diff --git a/arch/arm/boot/dts/sun4i-cubieboard.dts b/arch/arm/boot/dts/sun4i-cubieboard.dts
new file mode 100644
index 0000000..f4ca126
--- /dev/null
+++ b/arch/arm/boot/dts/sun4i-cubieboard.dts
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2012 Stefan Roese
+ * Stefan Roese <sr at denx.de>
+ *
+ * The code contained herein is licensed under the GNU General Public
+ * License. You may obtain a copy of the GNU General Public License
+ * Version 2 or later at the following locations:
+ *
+ * http://www.opensource.org/licenses/gpl-license.html
+ * http://www.gnu.org/copyleft/gpl.html
+ */
+
+/dts-v1/;
+/include/ "sun4i.dtsi"
+
+/ {
+	model = "Cubietech Cubieboard";
+	compatible = "cubietech,cubieboard", "allwinner,sun4i";
+
+	aliases {
+		serial0 = &uart0;
+		serial1 = &uart1;
+	};
+
+	chosen {
+		bootargs = "earlyprintk console=ttyS0,115200";
+	};
+
+	soc {
+		uart0: uart at 01c28000 {
+			status = "okay";
+		};
+
+		uart1: uart at 01c28400 {
+			status = "okay";
+		};
+	};
+};
diff --git a/arch/arm/boot/dts/sunxi.dtsi b/arch/arm/boot/dts/sunxi.dtsi
index 9e476de..8284fbd 100644
--- a/arch/arm/boot/dts/sunxi.dtsi
+++ b/arch/arm/boot/dts/sunxi.dtsi
@@ -54,6 +54,15 @@
 			#interrupt-cells = <1>;
 		};
 
+		uart0: uart at 01c28000 {
+			compatible = "ns8250";
+			reg = <0x01c28000 0x400>;
+			interrupts = <1>;
+			reg-shift = <2>;
+			clock-frequency = <24000000>;
+			status = "disabled";
+		};
+
 		uart1: uart at 01c28400 {
 			compatible = "ns8250";
 			reg = <0x01c28400 0x400>;
diff --git a/arch/arm/mach-sunxi/sunxi.c b/arch/arm/mach-sunxi/sunxi.c
index 8f42df8..13d4d96 100644
--- a/arch/arm/mach-sunxi/sunxi.c
+++ b/arch/arm/mach-sunxi/sunxi.c
@@ -46,6 +46,7 @@ static void __init sunxi_dt_init(void)
 }
 
 static const char * const sunxi_board_dt_compat[] = {
+	"allwinner,sun4i",
 	"allwinner,sun5i",
 	NULL,
 };
-- 
1.8.0