[PATCH] dt-bindings: remoteproc: Fix MT8188 SCP regs

[Rob Herring (Arm)]

Allow single-register MT8188 SCP dual nodes with only the cfg
region. Keep two-register and three-register requirements for the
other MediaTek SCP variants that need SRAM and L1TCM regions.

Assisted-by: LLM
Signed-off-by: Rob Herring (Arm) <robh at kernel.org>
---
 .../bindings/remoteproc/mtk,scp.yaml          | 22 ++++++++++++++++---
 1 file changed, 19 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/remoteproc/mtk,scp.yaml b/Documentation/devicetree/bindings/remoteproc/mtk,scp.yaml
index bdbb12118da4..2f0a28c7a24c 100644
--- a/Documentation/devicetree/bindings/remoteproc/mtk,scp.yaml
+++ b/Documentation/devicetree/bindings/remoteproc/mtk,scp.yaml
@@ -28,11 +28,11 @@ properties:
     description:
       Should contain the address ranges for memory regions SRAM, CFG, and,
       on some platforms, L1TCM.
-    minItems: 2
+    minItems: 1
     maxItems: 3
 
   reg-names:
-    minItems: 2
+    minItems: 1
     maxItems: 3
 
   clocks:
@@ -171,6 +171,7 @@ allOf:
     then:
       properties:
         reg:
+          minItems: 2
           maxItems: 2
         reg-names:
           items:
@@ -185,6 +186,7 @@ allOf:
     then:
       properties:
         reg:
+          minItems: 3
           maxItems: 3
         reg-names:
           items:
@@ -195,17 +197,31 @@ allOf:
       properties:
         compatible:
           enum:
-            - mediatek,mt8188-scp-dual
             - mediatek,mt8195-scp-dual
     then:
       properties:
         reg:
+          minItems: 2
           maxItems: 2
         reg-names:
           items:
             - const: cfg
             - const: l1tcm
 
+  - if:
+      properties:
+        compatible:
+          enum:
+            - mediatek,mt8188-scp-dual
+    then:
+      properties:
+        reg:
+          minItems: 1
+          maxItems: 1
+        reg-names:
+          items:
+            - const: cfg
+
 additionalProperties: false
 
 examples:
-- 
2.53.0