[PATCH v4 1/3] dt-bindings: remoteproc: Move iommus constraint to SoC-specific bindings

[Komal Bajaj]

The `iommus` property constraint in qcom,pas-common.yaml is too
restrictive with `maxItems: 1`, preventing SoCs that require multiple
IOMMU entries from being properly described.

Remove `iommus` constraint from qcom,pas-common.yaml and add it to
SoC-specific binding files that have EL2 support and require IOMMU
configuration:

- qcom,sa8775p-pas.yaml: Add `iommus: maxItems: 1` for all sa8775p
  and qcs8300 remoteproc compatibles (lemans-el2, monaco-el2)

- qcom,sm8150-pas.yaml: Add `iommus: maxItems: 1` for qcs615
  remoteproc compatibles (talos-el2)

- qcom,sm8550-pas.yaml: Add `iommus: maxItems: 1` for x1e80100
  remoteproc compatibles (x1-el2)

This allows each SoC to define its own IOMMU requirements while
maintaining backward compatibility.

Signed-off-by: Komal Bajaj <komal.bajaj@xxxxxxxxxxxxxxxx>
---
 .../devicetree/bindings/remoteproc/qcom,pas-common.yaml      |  3 ---
 .../devicetree/bindings/remoteproc/qcom,sa8775p-pas.yaml     |  6 ++++++
 .../devicetree/bindings/remoteproc/qcom,sm8150-pas.yaml      | 12 ++++++++++++
 .../devicetree/bindings/remoteproc/qcom,sm8550-pas.yaml      | 12 ++++++++++++
 4 files changed, 30 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/remoteproc/qcom,pas-common.yaml b/Documentation/devicetree/bindings/remoteproc/qcom,pas-common.yaml
index f75cab6b4ed9..4662fe4cff62 100644
--- a/Documentation/devicetree/bindings/remoteproc/qcom,pas-common.yaml
+++ b/Documentation/devicetree/bindings/remoteproc/qcom,pas-common.yaml
@@ -32,9 +32,6 @@ properties:
     minItems: 5
     maxItems: 6
 
-  iommus:
-    maxItems: 1
-
   power-domains:
     minItems: 1
     maxItems: 3
diff --git a/Documentation/devicetree/bindings/remoteproc/qcom,sa8775p-pas.yaml b/Documentation/devicetree/bindings/remoteproc/qcom,sa8775p-pas.yaml
index dda2d144b720..711c2f723b17 100644
--- a/Documentation/devicetree/bindings/remoteproc/qcom,sa8775p-pas.yaml
+++ b/Documentation/devicetree/bindings/remoteproc/qcom,sa8775p-pas.yaml
@@ -106,6 +106,8 @@ allOf:
           items:
             - const: lcx
             - const: lmx
+        iommus:
+          maxItems: 1
 
   - if:
       properties:
@@ -126,6 +128,8 @@ allOf:
             - const: cx
             - const: mxc
             - const: nsp
+        iommus:
+          maxItems: 1
 
   - if:
       properties:
@@ -144,6 +148,8 @@ allOf:
           items:
             - const: cx
             - const: mxc
+        iommus:
+          maxItems: 1
 
 unevaluatedProperties: false
 
diff --git a/Documentation/devicetree/bindings/remoteproc/qcom,sm8150-pas.yaml b/Documentation/devicetree/bindings/remoteproc/qcom,sm8150-pas.yaml
index 5a7c5f8c92d1..e643e44a4739 100644
--- a/Documentation/devicetree/bindings/remoteproc/qcom,sm8150-pas.yaml
+++ b/Documentation/devicetree/bindings/remoteproc/qcom,sm8150-pas.yaml
@@ -178,6 +178,18 @@ allOf:
             - const: lcx
             - const: lmx
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,qcs615-adsp-pas
+              - qcom,qcs615-cdsp-pas
+    then:
+      properties:
+        iommus:
+          maxItems: 1
+
 unevaluatedProperties: false
 
 examples:
diff --git a/Documentation/devicetree/bindings/remoteproc/qcom,sm8550-pas.yaml b/Documentation/devicetree/bindings/remoteproc/qcom,sm8550-pas.yaml
index 99e9aeeb4f62..dd81ecdb8dc4 100644
--- a/Documentation/devicetree/bindings/remoteproc/qcom,sm8550-pas.yaml
+++ b/Documentation/devicetree/bindings/remoteproc/qcom,sm8550-pas.yaml
@@ -317,6 +317,18 @@ allOf:
             - const: mx
             - const: nsp
 
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - qcom,x1e80100-adsp-pas
+              - qcom,x1e80100-cdsp-pas
+    then:
+      properties:
+        iommus:
+          maxItems: 1
+
 unevaluatedProperties: false
 
 examples:

-- 
2.34.1