arm/dt: tegra devicetree support

Everything required to populate NVIDIA Tegra devices from the device
tree.  This patch adds a new DT_MACHINE_DESC() which matches against
a tegra20 device tree.  So far it only registers the on-chip devices,
but it will be refined in follow on patches to configure clocks and
pin IO from the device tree also.

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

1 files changed, 28 insertions, 0 deletions

diff --git a/arch/arm/boot/dts/tegra-seaboard.dts b/arch/arm/boot/dts/tegra-seaboard.dts
new file mode 100644
index 000000000000..1940cae00748
--- /dev/null
+++ b/arch/arm/boot/dts/tegra-seaboard.dts
@@ -0,0 +1,28 @@
+/dts-v1/;
+
+/memreserve/ 0x1c000000 0x04000000;
+/include/ "tegra20.dtsi"
+
+/ {
+        model = "NVIDIA Seaboard";
+        compatible = "nvidia,seaboard", "nvidia,tegra20";
+
+        chosen {
+                bootargs = "vmalloc=192M video=tegrafb console=ttyS0,115200n8 root=/dev/mmcblk1p3 rw rootwait";
+        };
+
+        memory {
+                device_type = "memory";
+                reg = < 0x00000000 0x40000000 >;
+        };
+
+        serial@70006300 {
+                clock-frequency = < 216000000 >;
+        };
+
+        sdhci@c8000400 {
+                gpios = <&gpio 69 0>, /* cd, gpio PI5 */
+                        <&gpio 57 0>, /* wp, gpio PH1 */
+                        <&gpio 70 0>; /* power, gpio PI6 */
+        };
+};