[PATCH v2 08/11] dt-bindings: firmware: arm,scmi: Extend bindings for protocol at 13

[Ulf Hansson]

The protocol at 13 node is describing the performance scaling option for the
ARM SCMI interface, as a clock provider. This is unnecessary limiting, as
performance scaling is in many cases not limited to switching a clock's
frequency.

Therefore, let's extend the binding so the interface can be modelled as a
generic performance domaintoo. The common way to describe this, is to use
the "power-domain" DT bindings, so let's use that.

Cc: Rob Herring <robh+dt at kernel.org>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt at linaro.org>
Cc: Conor Dooley <conor+dt at kernel.org>
Cc: devicetree at vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson at linaro.org>
---

Changes in v2:
	- Updated the DT binding to require "oneOf" #power-domain-cells or
	#clock-cells.

---
 .../devicetree/bindings/firmware/arm,scmi.yaml        | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
index b138f3d23df8..563a87dfb31a 100644
--- a/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
+++ b/Documentation/devicetree/bindings/firmware/arm,scmi.yaml
@@ -149,8 +149,15 @@ properties:
       '#clock-cells':
         const: 1
 
-    required:
-      - '#clock-cells'
+      '#power-domain-cells':
+        const: 1
+
+    oneOf:
+      - required:
+          - '#clock-cells'
+
+      - required:
+          - '#power-domain-cells'
 
   protocol at 14:
     $ref: '#/$defs/protocol-node'
-- 
2.34.1