ipmi: Add device tree bindings information

Signed-off-by: Corey Minyard <cminyard@mvista.com>

diff --git a/Documentation/devicetree/bindings/ipmi.txt b/Documentation/devicetree/bindings/ipmi.txt
new file mode 100644 (file)
index 0000000..d5f1a87
--- /dev/null
+++ b/Documentation/devicetree/bindings/ipmi.txt
@@ -0,0 +1,25 @@
+IPMI device
+
+Required properties:
+- compatible: should be one of ipmi-kcs, ipmi-smic, or ipmi-bt
+- device_type: should be ipmi
+- reg: Address and length of the register set for the device
+
+Optional properties:
+- interrupts: The interrupt for the device.  Without this the interface
+       is polled.
+- reg-size - The size of the register.  Defaults to 1
+- reg-spacing - The number of bytes between register starts.  Defaults to 1
+- reg-shift - The amount to shift the registers to the right to get the data
+       into bit zero.
+
+Example:
+
+smic@fff3a000 {
+       compatible = "ipmi-smic";
+       device_type = "ipmi";
+       reg = <0xfff3a000 0x1000>;
+       interrupts = <0 24 4>;
+       reg-size = <4>;
+       reg-spacing = <4>;
+};