arm/dt: Tegra: Add pinmux node to tegra20.dtsi

Add a pinmux node to tegra20.dtsi in order to instantiate the future
pinmux device.

v2: Specify reg property precisely; don't just point at the whole APB_MISC
register range.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>

2 files changed, 13 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/pinmux/pinmux_nvidia.txt b/Documentation/devicetree/bindings/pinmux/pinmux_nvidia.txt
new file mode 100644
index 000000000000..36f82dbdd14d
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinmux/pinmux_nvidia.txt
@@ -0,0 +1,5 @@
+NVIDIA Tegra 2 pinmux controller
+
+Required properties:
+- compatible : "nvidia,tegra20-pinmux"
+
diff --git a/arch/arm/boot/dts/tegra20.dtsi b/arch/arm/boot/dts/tegra20.dtsi
index 5727595cde61..65d7e6a333eb 100644
--- a/arch/arm/boot/dts/tegra20.dtsi
+++ b/arch/arm/boot/dts/tegra20.dtsi
@@ -77,6 +77,14 @@
                 gpio-controller;
         };
 
+        pinmux: pinmux@70000000 {
+                compatible = "nvidia,tegra20-pinmux";
+                reg = < 0x70000014 0x10    /* Tri-state registers */
+                        0x70000080 0x20    /* Mux registers */
+                        0x700000a0 0x14    /* Pull-up/down registers */
+                        0x70000868 0xa8 >; /* Pad control registers */
+        };
+
         serial@70006000 {
                 compatible = "nvidia,tegra20-uart";
                 reg = <0x70006000 0x40>;