target/linux/starfive/patches-6.1/0111-dt-bindings-dma-snps-dw-axi-dmac-constrain-the-items.patch

   1 From c2f59eeeee68bb66a3db8555474fe94e73b65b02 Mon Sep 17 00:00:00 2001
   2 From: Walker Chen <walker.chen@starfivetech.com>
   3 Date: Wed, 22 Mar 2023 17:48:17 +0800
   4 Subject: [PATCH 111/122] dt-bindings: dma: snps,dw-axi-dmac: constrain the
   5  items of resets for JH7110 dma
   6
   7 The DMA controller needs two reset items to work properly on JH7110 SoC,
   8 so there is need to constrain the items' value to 2, other platforms
   9 have 1 reset item at most.
  10
  11 Reviewed-by: Rob Herring <robh@kernel.org>
  12 Signed-off-by: Walker Chen <walker.chen@starfivetech.com>
  13 ---
  14  .../bindings/dma/snps,dw-axi-dmac.yaml        | 23 ++++++++++++++++++-
  15  1 file changed, 22 insertions(+), 1 deletion(-)
  16
  17 --- a/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml
  18 +++ b/Documentation/devicetree/bindings/dma/snps,dw-axi-dmac.yaml
  19 @@ -21,6 +21,7 @@ properties:
  20      enum:
  21        - snps,axi-dma-1.01a
  22        - intel,kmb-axi-dma
  23 +      - starfive,jh7110-axi-dma
  24
  25    reg:
  26      minItems: 1
  27 @@ -59,7 +60,8 @@ properties:
  28      maximum: 8
  29
  30    resets:
  31 -    maxItems: 1
  32 +    minItems: 1
  33 +    maxItems: 2
  34
  35    snps,dma-masters:
  36      description: |
  37 @@ -110,6 +112,25 @@ required:
  38    - snps,priority
  39    - snps,block-size
  40
  41 +if:
  42 +  properties:
  43 +    compatible:
  44 +      contains:
  45 +        enum:
  46 +          - starfive,jh7110-axi-dma
  47 +then:
  48 +  properties:
  49 +    resets:
  50 +      minItems: 2
  51 +      items:
  52 +        - description: AXI reset line
  53 +        - description: AHB reset line
  54 +        - description: module reset
  55 +else:
  56 +  properties:
  57 +    resets:
  58 +      maxItems: 1
  59 +
  60  additionalProperties: false
  61
  62  examples: