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+* IBM Powerpc Virtual Accelerator Switchboard (VAS)
+
+VAS is a hardware mechanism that allows kernel subsystems and user processes
+to directly submit compression and other requests to Nest accelerators (NX)
+or other coprocessors functions.
+
+Required properties:
+- compatible : should be "ibm,vas".
+- ibm,vas-id : A unique identifier for each instance of VAS in the system
+- reg : Should contain 4 pairs of 64-bit fields specifying the Hypervisor
+ window context start and length, OS/User window context start and length,
+ "Paste address" start and length, "Paste window id" start bit and number
+ of bits)
+
+Example:
+
+ vas@6019100000000 {
+ compatible = "ibm,vas", "ibm,power9-vas";
+ reg = <0x6019100000000 0x2000000 0x6019000000000 0x100000000 0x8000000000000 0x100000000 0x20 0x10>;
+ name = "vas";
+ ibm,vas-id = <0x1>;
+ };