ibm,vas.txt

 1* IBM Powerpc Virtual Accelerator Switchboard (VAS)
 2
 3VAS is a hardware mechanism that allows kernel subsystems and user processes
 4to directly submit compression and other requests to Nest accelerators (NX)
 5or other coprocessors functions.
 6
 7Required properties:
 8- compatible : should be "ibm,vas".
 9- ibm,vas-id : A unique identifier for each instance of VAS in the system
10- reg : Should contain 4 pairs of 64-bit fields specifying the Hypervisor
11  window context start and length, OS/User window context start and length,
12  "Paste address" start and length, "Paste window id" start bit and number
13  of bits)
14
15Example:
16
17	vas@6019100000000 {
18		compatible = "ibm,vas", "ibm,power9-vas";
19		reg = <0x6019100000000 0x2000000 0x6019000000000 0x100000000 0x8000000000000 0x100000000 0x20 0x10>;
20		name = "vas";
21		ibm,vas-id = <0x1>;
22	};