[PATCH v2 03/17] dt-bindings: soc/microchip: make systemcontroller a mfd

[<conor.dooley@xxxxxxxxxxxxx>]

From: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>

Make the system controller on the Polarfire SoC
a "simple,mfd" so that the services can be child
nodes of the system controller node.

Signed-off-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
---
 .../microchip,mpfs-sys-controller.yaml        | 33 +++++++++++++++++--
 1 file changed, 30 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/soc/microchip/microchip,mpfs-sys-controller.yaml b/Documentation/devicetree/bindings/soc/microchip/microchip,mpfs-sys-controller.yaml
index f699772fedf3..014cb44b8f31 100644
--- a/Documentation/devicetree/bindings/soc/microchip/microchip,mpfs-sys-controller.yaml
+++ b/Documentation/devicetree/bindings/soc/microchip/microchip,mpfs-sys-controller.yaml
@@ -13,13 +13,34 @@ description: |
   The PolarFire SoC system controller is communicated with via a mailbox.
   This document describes the bindings for the client portion of that mailbox.
 
-
 properties:
   mboxes:
     maxItems: 1
 
   compatible:
-    const: microchip,mpfs-sys-controller
+    items:
+      - const: microchip,mpfs-sys-controller
+      - const: simple-mfd
+
+  hwrandom:
+    type: object
+
+    properties:
+      compatible:
+        const: microchip,mpfs-rng
+
+    required:
+      - compatible
+
+  sysserv:
+    type: object
+
+    properties:
+      compatible:
+        const: microchip,mpfs-generic-service
+
+    required:
+      - compatible
 
 required:
   - compatible
@@ -30,6 +51,12 @@ additionalProperties: false
 examples:
   - |
     syscontroller: syscontroller {
-      compatible = "microchip,mpfs-sys-controller";
+      compatible = "microchip,mpfs-sys-controller", "simple-mfd";
       mboxes = <&mbox 0>;
+      hwrandom: hwrandom {
+        compatible = "microchip,mpfs-rng";
+      };
+      sysserv: sysserv {
+        compatible = "microchip,mpfs-generic-service";
+      };
     };
-- 
2.33.1