[PATCH v4 6/7] dt-bindings: remoteproc: qcom,msm8916-mss-pil: Add MSM8953

[Stephan Gerhold <stephan.gerhold@kernkonzept.com>]

Add the compatible for MSS as found on the MSM8953 platform.

The situation is similar to the existing bindings for MSM8974: there is
an additional "mss" power domain that must be voted for while starting
up the remote processor. The difference is that on MSM8974 the power
domain is represented as a regulator (firmware expects specific voltage)
while on MSM8953 it is represented as power domain (firmware expects
performance state instead of voltage).

Handle this difference by adding the "mss" power domain as optional
third item, and then restrict it (and make it required) only when using
the MSM8953 compatible.

Co-developed-by: Sireesh Kodali <sireeshkodali1@gmail.com>
Signed-off-by: Sireesh Kodali <sireeshkodali1@gmail.com>
Signed-off-by: Stephan Gerhold <stephan.gerhold@kernkonzept.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
Changes in v4: Drop obvious comment, add Krzysztof's Reviewed-by
Changes in v3: Combine series with Sireesh's patches for MSM8953
---
 .../remoteproc/qcom,msm8916-mss-pil.yaml      | 26 +++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/Documentation/devicetree/bindings/remoteproc/qcom,msm8916-mss-pil.yaml b/Documentation/devicetree/bindings/remoteproc/qcom,msm8916-mss-pil.yaml
index 250bf4afab10..6e6e69ad9cd7 100644
--- a/Documentation/devicetree/bindings/remoteproc/qcom,msm8916-mss-pil.yaml
+++ b/Documentation/devicetree/bindings/remoteproc/qcom,msm8916-mss-pil.yaml
@@ -19,6 +19,7 @@ properties:
       - enum:
           - qcom,msm8909-mss-pil
           - qcom,msm8916-mss-pil
+          - qcom,msm8953-mss-pil
           - qcom,msm8974-mss-pil
 
       - const: qcom,q6v5-pil
@@ -69,11 +70,16 @@ properties:
     items:
       - description: CX proxy power domain (control handed over after startup)
       - description: MX proxy power domain (control handed over after startup)
+      - description: MSS proxy power domain (control handed over after startup)
+                     (only valid for qcom,msm8953-mss-pil)
+    minItems: 2
 
   power-domain-names:
     items:
       - const: cx
       - const: mx
+      - const: mss # only valid for qcom,msm8953-mss-pil
+    minItems: 2
 
   pll-supply:
     description: PLL proxy supply (control handed over after startup)
@@ -186,6 +192,26 @@ required:
   - smd-edge
 
 allOf:
+  - if:
+      properties:
+        compatible:
+          const: qcom,msm8953-mss-pil
+    then:
+      properties:
+        power-domains:
+          minItems: 3
+        power-domain-names:
+          minItems: 3
+      required:
+        - power-domains
+        - power-domain-names
+    else:
+      properties:
+        power-domains:
+          maxItems: 2
+        power-domain-names:
+          maxItems: 2
+
   - if:
       properties:
         compatible:
-- 
2.30.2