linux-kernel - [PATCH 1/3] dt-bindings: cpufreq: qcom-cpufreq-nvmem: make cpr bindings optional

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Date:   Sat, 21 Jan 2023 01:01:44 +0100
From:   Christian Marangi <ansuelsmth@...il.com>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Ilia Lin <ilia.lin@...nel.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Nishanth Menon <nm@...com>, Stephen Boyd <sboyd@...nel.org>,
        Yassine Oudjana <y.oudjana@...tonmail.com>,
        linux-arm-msm@...r.kernel.org, linux-pm@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Christian Marangi <ansuelsmth@...il.com>
Subject: [PATCH 1/3] dt-bindings: cpufreq: qcom-cpufreq-nvmem: make cpr bindings optional

The qcom-cpufreq-nvmem driver also supports legacy devices pre-cpr that
doesn't have power-domains. When the schema was introduced, it was
wrongly set to always require these binding but this is not the case for
legacy device that base everything on nvmem cells and multiple microvolt
binding providing values based on speedbin, psv and version.

Make the power-domain optional and set them required only for qcs404
based devices.

Fixes: ec24d1d55469 ("dt-bindings: opp: Convert qcom-nvmem-cpufreq to DT schema")
Signed-off-by: Christian Marangi <ansuelsmth@...il.com>
---
 .../bindings/cpufreq/qcom-cpufreq-nvmem.yaml  | 78 +++++++++++++------
 1 file changed, 54 insertions(+), 24 deletions(-)

diff --git a/Documentation/devicetree/bindings/cpufreq/qcom-cpufreq-nvmem.yaml b/Documentation/devicetree/bindings/cpufreq/qcom-cpufreq-nvmem.yaml
index 9c086eac6ca7..04aac634d7fc 100644
--- a/Documentation/devicetree/bindings/cpufreq/qcom-cpufreq-nvmem.yaml
+++ b/Documentation/devicetree/bindings/cpufreq/qcom-cpufreq-nvmem.yaml
@@ -17,6 +17,9 @@ description: |
   on the CPU OPP in use. The CPUFreq driver sets the CPR power domain level
   according to the required OPPs defined in the CPU OPP tables.
 
+  For old implementation efuses are parsed to select the correct opp table and
+  voltage and CPR is not supported/used.
+
 select:
   properties:
     compatible:
@@ -33,37 +36,64 @@ select:
   required:
     - compatible
 
-properties:
-  cpus:
-    type: object
+if:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - qcom,qcs404
 
-    patternProperties:
-      '^cpu@[0-9a-f]+$':
-        type: object
+then:
+  properties:
+    cpus:
+      type: object
 
-        properties:
-          power-domains:
-            maxItems: 1
+      patternProperties:
+        '^cpu@[0-9a-f]+$':
+          type: object
+
+          properties:
+            power-domains:
+              maxItems: 1
 
-          power-domain-names:
-            items:
-              - const: cpr
+            power-domain-names:
+              items:
+                - const: cpr
 
-        required:
-          - power-domains
-          - power-domain-names
+          required:
+            - power-domains
+            - power-domain-names
+
+  patternProperties:
+    '^opp-table(-[a-z0-9]+)?$':
+      if:
+        properties:
+          compatible:
+            const: operating-points-v2-kryo-cpu
+      then:
+        patternProperties:
+          '^opp-?[0-9]+$':
+            required:
+              - required-opps
 
 patternProperties:
   '^opp-table(-[a-z0-9]+)?$':
-    if:
-      properties:
-        compatible:
-          const: operating-points-v2-kryo-cpu
-    then:
-      patternProperties:
-        '^opp-?[0-9]+$':
-          required:
-            - required-opps
+    allOf:
+      - if:
+          properties:
+            compatible:
+              const: operating-points-v2-kryo-cpu
+        then:
+          $ref: /schemas/opp/opp-v2-kryo-cpu.yaml#
+
+      - if:
+          properties:
+            compatible:
+              const: operating-points-v2-qcom-level
+        then:
+          $ref: /schemas/opp/opp-v2-qcom-level.yaml#
+
+    unevaluatedProperties: false
 
 additionalProperties: true
 
-- 
2.38.1