From: Walker Chen <walker.chen@starfivetech.com>
Date: Tue, 14 Mar 2023 08:35:35 +0000 (+0800)
Subject: dt-bindings: dma: snps,dw-axi-dmac: constrain the items of resets for JH7110 dma
X-Git-Tag: accepted/tizen/unified/riscv/20230718.024919~170
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=29533d693e0864d557e99066904f177639409795;p=platform%2Fkernel%2Flinux-starfive.git

dt-bindings: dma: snps,dw-axi-dmac: constrain the items of resets for JH7110 dma

The DMA controller needs two reset items to work properly on JH7110 SoC,
so there is need to constrain the items' value to 2, other platforms
have 1 reset item at most.

Signed-off-by: Walker Chen <walker.chen@starfivetech.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---

diff --git a/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml b/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml
index 67aa7bb6d36a..e1ec04f65279 100644
--- a/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml
+++ b/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml
@@ -21,6 +21,7 @@ properties:
     enum:
       - snps,axi-dma-1.01a
       - intel,kmb-axi-dma
+      - starfive,jh7110-axi-dma
 
   reg:
     minItems: 1
@@ -59,7 +60,8 @@ properties:
     maximum: 8
 
   resets:
-    maxItems: 1
+    minItems: 1
+    maxItems: 2
 
   snps,dma-masters:
     description: |
@@ -110,6 +112,25 @@ required:
   - snps,priority
   - snps,block-size
 
+if:
+  properties:
+    compatible:
+      contains:
+        enum:
+          - starfive,jh7110-axi-dma
+then:
+  properties:
+    resets:
+      minItems: 2
+      items:
+        - description: AXI reset line
+        - description: AHB reset line
+        - description: module reset
+else:
+  properties:
+    resets:
+      maxItems: 1
+
 additionalProperties: false
 
 examples: