ARM: sunxi: Add sun4i and cubieboard support

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@denx.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

4 files changed, 50 insertions, 1 deletions

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 9b2d3f061f13..4dd567b62d2a 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 000000000000..f4ca126ad994
--- /dev/null
+++ b/arch/arm/boot/dts/sun4i-cubieboard.dts
@@ -0,0 +1,38 @@
+/*
+ * Copyright 2012 Stefan Roese
+ * Stefan Roese <sr@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@01c28000 {
+                        status = "okay";
+                };
+
+                uart1: uart@01c28400 {
+                        status = "okay";
+                };
+        };
+};
diff --git a/arch/arm/boot/dts/sunxi.dtsi b/arch/arm/boot/dts/sunxi.dtsi
index 9e476deb8809..8284fbd7ddab 100644
--- a/arch/arm/boot/dts/sunxi.dtsi
+++ b/arch/arm/boot/dts/sunxi.dtsi
@@ -54,6 +54,15 @@
                         #interrupt-cells = <1>;
                 };
 
+                uart0: uart@01c28000 {
+                        compatible = "ns8250";
+                        reg = <0x01c28000 0x400>;
+                        interrupts = <1>;
+                        reg-shift = <2>;
+                        clock-frequency = <24000000>;
+                        status = "disabled";
+                };
+
                 uart1: uart@01c28400 {
                         compatible = "ns8250";
                         reg = <0x01c28400 0x400>;
diff --git a/arch/arm/mach-sunxi/sunxi.c b/arch/arm/mach-sunxi/sunxi.c
index 8f42df8af1da..13d4d96cbc85 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,
 };