--- /dev/null
+OLPC AP-SP serio interface
+
+Required properties:
+- compatible : "olpc,ap-sp"
+- reg : base address and length of SoC's WTM registers
+- interrupts : SP-AP interrupt
+
+Example:
+ ap-sp@d4290000 {
+ compatible = "olpc,ap-sp";
+ reg = <0xd4290000 0x1000>;
+ interrupts = <40>;
+ }