fdt: add initial device tree files for Tegra2

These files are from the device tree mailing list. So far they
are very basic.

BUG=chromium-os:11623
TEST=(none, this just adds files)

Change-Id: I201110f58bf63e4b2d0728355cdfceb68455f0f0
Reviewed-on: http://gerrit.chromium.org/gerrit/618
Reviewed-by: Doug Anderson <dianders@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>

3 files changed, 167 insertions, 0 deletions

diff --git a/arch/arm/cpu/armv7/tegra2/tegra250.dtsi b/arch/arm/cpu/armv7/tegra2/tegra250.dtsi
new file mode 100644
index 0000000000..1b6d5b6740
--- /dev/null
+++ b/arch/arm/cpu/armv7/tegra2/tegra250.dtsi
@@ -0,0 +1,99 @@
+/include/ "../../../../../dts/skeleton.dtsi"
+
+/ {
+	model = "NVIDIA Tegra 250";
+	compatible = "nvidia,tegra250";
+	interrupt-parent = <&intc>;
+
+	amba {
+		compatible = "simple-bus";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		intc: interrupt-controller@50041000 {
+			compatible = "nvidia,tegra250-gic", "arm,gic";
+			interrupt-controller;
+			#interrupt-cells = <1>;
+			reg = < 0x50041000 0x1000 >,
+			      < 0x50040100 0x0100 >;
+		};
+	};
+
+	gpio: gpio@6000d000 {
+		compatible = "nvidia,tegra250-gpio", "ns16550";
+		reg = < 0x6000d000 0x1000 >;
+		interrupts = < 64 65 66 67 87 119 121 >;
+		#gpio-cells = <2>;
+		gpio-controller;
+	};
+
+	serial@70006000 {
+		compatible = "nvidia,tegra250-uart", "ns16550";
+		reg = <0x70006000 0x40>;
+		reg-shift = <2>;
+		interrupts = < 68 >;
+		status = "disabled";
+	};
+
+	serial@70006040 {
+		compatible = "nvidia,tegra250-uart", "ns16550";
+		reg = <0x70006040 0x40>;
+		reg-shift = <2>;
+		interrupts = < 69 >;
+		status = "disabled";
+	};
+
+	serial@70006200 {
+		compatible = "nvidia,tegra250-uart", "ns16550";
+		reg = <0x70006200 0x100>;
+		reg-shift = <2>;
+		interrupts = < 78 >;
+		status = "disabled";
+	};
+
+	serial@70006300 {
+		compatible = "nvidia,tegra250-uart", "ns16550";
+		reg = <0x70006300 0x100>;
+		reg-shift = <2>;
+		interrupts = < 122 >;
+		status = "disabled";
+	};
+
+	serial@70006400 {
+		compatible = "nvidia,tegra250-uart", "ns16550";
+		reg = <0x70006400 0x100>;
+		reg-shift = <2>;
+		interrupts = < 123 >;
+		status = "disabled";
+	};
+
+	sdhci@c8000000 {
+		compatible = "nvidia,tegra250-sdhci";
+		reg = <0xc8000000 0x200>;
+		interrupts = < 46 >;
+		status = "disabled";
+	};
+
+	sdhci@c8000200 {
+		compatible = "nvidia,tegra250-sdhci";
+		reg = <0xc8000200 0x200>;
+		interrupts = < 47 >;
+		status = "disabled";
+	};
+
+	sdhci@c8000400 {
+		compatible = "nvidia,tegra250-sdhci";
+		reg = <0xc8000400 0x200>;
+		interrupts = < 51 >;
+		status = "disabled";
+	};
+
+	sdhci@c8000600 {
+		compatible = "nvidia,tegra250-sdhci";
+		reg = <0xc8000600 0x200>;
+		interrupts = < 63 >;
+		status = "disabled";
+	};
+};
+
diff --git a/board/nvidia/seaboard/tegra2-seaboard.dts b/board/nvidia/seaboard/tegra2-seaboard.dts
new file mode 100644
index 0000000000..0663da2886
--- /dev/null
+++ b/board/nvidia/seaboard/tegra2-seaboard.dts
@@ -0,0 +1,55 @@
+/dts-v1/;
+
+/memreserve/ 0x1c000000 0x04000000;
+/include/ "../../../arch/arm/cpu/armv7/tegra2/tegra250.dtsi"
+
+/ {
+	model = "NVIDIA Seaboard";
+	compatible = "nvidia,seaboard", "nvidia,tegra250";
+
+	aliases {
+		console = "/serial@70006300";
+
+		/*
+		 * Number the serial ports so the U-Boot NS16550 driver can
+		 * maintain an output buffer for each.
+		 */
+		serial3 = "/serial@70006300";
+	};
+
+	chosen {
+		bootargs = "";
+	};
+
+	memory {
+		device_type = "memory";
+		reg = < 0x00000000 0x40000000 >;
+	};
+
+	serial@70006300 {
+		status = "ok";
+		clock-frequency = < 216000000 >;
+	};
+
+	/*
+	 * Seaboard has a switch on GPIO67 which affects this UART. Until
+	 * pinmux support is added it is not clear how to do this, so this
+	 * is a stop-gap.
+	 */
+	switch {
+		compatible = "nvidia,spi-uart-switch";
+		uart = "serial3";
+		gpios = <&gpio 67 0>; /* Port I = 8 bit = 3: 8 * 8 + 3 */
+	};
+
+	sdhci@c8000400 {
+		status = "ok";
+		gpios = <&gpio 69 0>, /* cd, gpio PI5 */
+			<&gpio 57 0>, /* wp, gpio PH1 */
+			<&gpio 70 0>; /* power, gpio PI6 */
+	};
+
+	sdhci@c8000600 {
+		status = "ok";
+	};
+};
diff --git a/dts/skeleton.dtsi b/dts/skeleton.dtsi
new file mode 100644
index 0000000000..b41d241de2
--- /dev/null
+++ b/dts/skeleton.dtsi
@@ -0,0 +1,13 @@
+/*
+ * Skeleton device tree; the bare minimum needed to boot; just include and
+ * add a compatible value.  The bootloader will typically populate the memory
+ * node.
+ */
+
+/ {
+	#address-cells = <1>;
+	#size-cells = <1>;
+	chosen { };
+	aliases { };
+	memory { device_type = "memory"; reg = <0 0>; };
+};