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Subject[PATCH v4 1/3] dt-bindings: dma: snps,dw-axi-dmac: constrain resets items for JH7110 dma
Date
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>
---
.../bindings/dma/snps,dw-axi-dmac.yaml | 24 +++++++++++++++----
1 file changed, 20 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml b/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml
index ad107a4d3b33..d8b5439f215c 100644
--- a/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml
+++ b/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml
@@ -12,14 +12,12 @@ maintainers:
description:
Synopsys DesignWare AXI DMA Controller DT Binding

-allOf:
- - $ref: "dma-controller.yaml#"
-
properties:
compatible:
enum:
- snps,axi-dma-1.01a
- intel,kmb-axi-dma
+ - starfive,jh7110-axi-dma

reg:
minItems: 1
@@ -58,7 +56,8 @@ properties:
maximum: 8

resets:
- maxItems: 1
+ minItems: 1
+ maxItems: 2

snps,dma-masters:
description: |
@@ -109,6 +108,23 @@ required:
- snps,priority
- snps,block-size

+allOf:
+ - $ref: "dma-controller.yaml#"
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - starfive,jh7110-axi-dma
+ then:
+ properties:
+ resets:
+ minItems: 2
+ else:
+ properties:
+ resets:
+ maxItems: 1
+
additionalProperties: false

examples:
--
2.17.1
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