linux-kernel - [PATCH 2/4] dt-bindings: remoteproc: mediatek: Remove l1tcm for dual-core MT8188 SCP

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Message-Id: <20250318-scp-dual-core-mt8390-v1-2-8733e192cc73@collabora.com>
Date: Tue, 18 Mar 2025 18:22:16 -0400
From: Nícolas F. R. A. Prado <nfraprado@...labora.com>
To: Bjorn Andersson <andersson@...nel.org>, 
 Mathieu Poirier <mathieu.poirier@...aro.org>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Matthias Brugger <matthias.bgg@...il.com>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, 
 Tinghan Shen <tinghan.shen@...iatek.com>, 
 Olivia Wen <olivia.wen@...iatek.com>
Cc: kernel@...labora.com, linux-remoteproc@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-arm-kernel@...ts.infradead.org, linux-mediatek@...ts.infradead.org, 
 Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>, 
 Nícolas F. R. A. Prado <nfraprado@...labora.com>
Subject: [PATCH 2/4] dt-bindings: remoteproc: mediatek: Remove l1tcm for
 dual-core MT8188 SCP

The SCP present on MT8188 does not have an L1TCM memory region, but the
binding incorrectly requires one for the dual-core description of the
MT8188 SCP. Remove that requirement. Also update the minimum number of
reg and reg-names to 1, since as this is a multi-core SCP with no
L1TCM memory, only the CFG memory region is present in the parent node.

Fixes: 91e0d560b9fd ("dt-bindings: remoteproc: mediatek: Support MT8188 dual-core SCP")
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>
---
 .../devicetree/bindings/remoteproc/mtk,scp.yaml       | 19 ++++++++++++++++---
 1 file changed, 16 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/remoteproc/mtk,scp.yaml b/Documentation/devicetree/bindings/remoteproc/mtk,scp.yaml
index ee33c233e44f3d51f0851b35697a24208c87f68a..04348cfcb0424dc78ff1ddd77665285a052925e9 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:
@@ -196,16 +197,28 @@ 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:
+          maxItems: 1
+        reg-names:
+          items:
+            - const: cfg

 additionalProperties: false

-- 
2.49.0