linux-kernel - [PATCH] media: dt-bindings: mediatek: Constrain iommus

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Message-ID: <20250525051639.68753-2-krzysztof.kozlowski@linaro.org>
Date: Sun, 25 May 2025 07:16:40 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Chun-Kuang Hu <chunkuang.hu@...nel.org>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	David Airlie <airlied@...il.com>,
	Simona Vetter <simona@...ll.ch>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	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>,
	dri-devel@...ts.freedesktop.org,
	linux-mediatek@...ts.infradead.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH] media: dt-bindings: mediatek: Constrain iommus

Lists should have fixed constraints, because binding must be specific in
respect to hardware.  Add missing constraints to number of iommus in
Mediatek media devices.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 .../bindings/display/mediatek/mediatek,ovl-2l.yaml           | 5 ++---
 .../devicetree/bindings/display/mediatek/mediatek,ovl.yaml   | 5 ++---
 .../devicetree/bindings/display/mediatek/mediatek,rdma.yaml  | 4 +---
 .../devicetree/bindings/display/mediatek/mediatek,wdma.yaml  | 4 +---
 4 files changed, 6 insertions(+), 12 deletions(-)

diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,ovl-2l.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,ovl-2l.yaml
index bacdfe7d08a6..ac0d924a451b 100644
--- a/Documentation/devicetree/bindings/display/mediatek/mediatek,ovl-2l.yaml
+++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,ovl-2l.yaml
@@ -45,9 +45,8 @@ properties:
       - description: OVL-2L Clock
 
   iommus:
-    description:
-      This property should point to the respective IOMMU block with master port as argument,
-      see Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml for details.
+    minItems: 1
+    maxItems: 2
 
   mediatek,gce-client-reg:
     description: The register of client driver can be configured by gce with
diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,ovl.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,ovl.yaml
index 4f110635afb6..c0fd0a91c4d8 100644
--- a/Documentation/devicetree/bindings/display/mediatek/mediatek,ovl.yaml
+++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,ovl.yaml
@@ -65,9 +65,8 @@ properties:
       - description: OVL Clock
 
   iommus:
-    description:
-      This property should point to the respective IOMMU block with master port as argument,
-      see Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml for details.
+    minItems: 1
+    maxItems: 2
 
   mediatek,gce-client-reg:
     description: The register of client driver can be configured by gce with
diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,rdma.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,rdma.yaml
index 878f676b581f..7e5234def39a 100644
--- a/Documentation/devicetree/bindings/display/mediatek/mediatek,rdma.yaml
+++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,rdma.yaml
@@ -64,9 +64,7 @@ properties:
       - description: RDMA Clock
 
   iommus:
-    description:
-      This property should point to the respective IOMMU block with master port as argument,
-      see Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml for details.
+    maxItems: 1
 
   mediatek,rdma-fifo-size:
     description:
diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,wdma.yaml b/Documentation/devicetree/bindings/display/mediatek/mediatek,wdma.yaml
index a3a2b71a4523..276868c0fde7 100644
--- a/Documentation/devicetree/bindings/display/mediatek/mediatek,wdma.yaml
+++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,wdma.yaml
@@ -43,9 +43,7 @@ properties:
       - description: WDMA Clock
 
   iommus:
-    description:
-      This property should point to the respective IOMMU block with master port as argument,
-      see Documentation/devicetree/bindings/iommu/mediatek,iommu.yaml for details.
+    maxItems: 1
 
   mediatek,gce-client-reg:
     description: The register of client driver can be configured by gce with
-- 
2.45.2