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+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>;
+};