From b077160f57872420f807169cdc67ab144b6b9e02 Mon Sep 17 00:00:00 2001
From: Walker Chen <walker.chen@starfivetech.com>
Date: Wed, 22 Mar 2023 17:48:17 +0800
Subject: 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.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Walker Chen <walker.chen@starfivetech.com>
---
 .../devicetree/bindings/dma/snps,dw-axi-dmac.yaml  | 23 +++++++++++++++++++++-
 1 file changed, 22 insertions(+), 1 deletion(-)

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:
-- 
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