linux-kernel - [PATCH v3 1/1] dt-bindings: fsl-qdma: allow compatible string fallback to fsl,ls1021a-qdma

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Message-Id: <20240704020802.3371203-1-Frank.Li@nxp.com>
Date: Wed,  3 Jul 2024 22:08:02 -0400
From: Frank Li <Frank.Li@....com>
To: Vinod Koul <vkoul@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	dmaengine@...r.kernel.org (open list:DMA GENERIC OFFLOAD ENGINE SUBSYSTEM),
	devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS),
	linux-kernel@...r.kernel.org (open list)
Cc: imx@...ts.linux.dev
Subject: [PATCH v3 1/1] dt-bindings: fsl-qdma: allow compatible string fallback to fsl,ls1021a-qdma

The IP of QDMA ls1028/ls1043/ls1046/ is same as ls1021. So allow compatible
string fallback to fsl,ls1021a-qdma.

The difference is that ls1021a-qdma have 3 irqs, and other have 5 irqs.

Fix below CHECK_DTB warning.
arch/arm64/boot/dts/freescale/fsl-ls1046a-rdb.dtb: dma-controller@...0000: compatible: ['fsl,ls1046a-qdma', 'fsl,ls1021a-qdma'] is too long

Signed-off-by: Frank Li <Frank.Li@....com>
---
Change from v2 to v3
- previous patch missed a dependent change.
 https://lore.kernel.org/imx/20240701195717.1843041-1-Frank.Li@nxp.com/T/#u
- Combine depedent change to one patch.

Change from v1 to v2
- Change  maxItems: 5 to minItems: 5. because maxItems: 5 already restrict
at top

interrupts:
    minItems: 2
    maxItems: 5
---
---
 .../devicetree/bindings/dma/fsl-qdma.yaml     | 23 ++++++++++++++-----
 1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/Documentation/devicetree/bindings/dma/fsl-qdma.yaml b/Documentation/devicetree/bindings/dma/fsl-qdma.yaml
index 1b689a2529c87..9401b1f6300d4 100644
--- a/Documentation/devicetree/bindings/dma/fsl-qdma.yaml
+++ b/Documentation/devicetree/bindings/dma/fsl-qdma.yaml
@@ -11,11 +11,14 @@ maintainers:
 
 properties:
   compatible:
-    enum:
-      - fsl,ls1021a-qdma
-      - fsl,ls1028a-qdma
-      - fsl,ls1043a-qdma
-      - fsl,ls1046a-qdma
+    oneOf:
+      - const: fsl,ls1021a-qdma
+      - items:
+          - enum:
+              - fsl,ls1028a-qdma
+              - fsl,ls1043a-qdma
+              - fsl,ls1046a-qdma
+          - const: fsl,ls1021a-qdma
 
   reg:
     items:
@@ -89,8 +92,16 @@ allOf:
         compatible:
           contains:
             enum:
-              - fsl,ls1021a-qdma
+              - fsl,ls1028a-qdma
+              - fsl,ls1043a-qdma
+              - fsl,ls1046a-qdma
     then:
+      properties:
+        interrupts:
+          minItems: 5
+        interrupt-names:
+          minItems: 5
+    else:
       properties:
         interrupts:
           maxItems: 3
-- 
2.34.1