git.openwrt.org Git - openwrt/openwrt.git/blob

   1 From 17689aafb793599a862617a127429dd3d6f675c9 Mon Sep 17 00:00:00 2001
   2 From: Jonas Jelonek <jelonek.jonas@gmail.com>
   3 Date: Sat, 27 Sep 2025 10:19:30 +0000
   4 Subject: [PATCH] dt-bindings: i2c: realtek,rtl9301-i2c: extend for RTL9310
   5  support
   6
   7 Adjust the regex for child-node address to account for the fact that
   8 RTL9310 supports 12 instead of only 8 SDA lines. Also, narrow this per
   9 variant.
  10
  11 Add a vendor-specific property to explicitly specify the SCL line number
  12 of the defined I2C controller/master. This is required, in particular
  13 for RTL9310, to operate on the correct SCL for each controller. Require
  14 this property to be specified for RTL9310.
  15
  16 Add compatibles for known SoC variants RTL9311, RTL9312 and RTL9313.
  17
  18 Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>
  19 Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
  20 Reviewed-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
  21 Tested-by: Markus Stockhausen <markus.stockhausen@gmx.de>
  22 Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
  23 Link: https://lore.kernel.org/r/20250927101931.71575-9-jelonek.jonas@gmail.com
  24
  25 diff --git a/Documentation/devicetree/bindings/i2c/realtek,rtl9301-i2c.yaml b/Documentation/devicetree/bindings/i2c/realtek,rtl9301-i2c.yaml
  26 index 274e2ab8b612..17ce39c19ab1 100644
  27 --- a/Documentation/devicetree/bindings/i2c/realtek,rtl9301-i2c.yaml
  28 +++ b/Documentation/devicetree/bindings/i2c/realtek,rtl9301-i2c.yaml
  29 @@ -13,6 +13,8 @@ description:
  30    RTL9300 SoCs have two I2C controllers. Each of these has an SCL line (which
  31    if not-used for SCL can be a GPIO). There are 8 common SDA lines that can be
  32    assigned to either I2C controller.
  33 +  RTL9310 SoCs have equal capabilities but support 12 common SDA lines which
  34 +  can be assigned to either I2C controller.
  35
  36  properties:
  37    compatible:
  38 @@ -23,7 +25,15 @@ properties:
  39                - realtek,rtl9302c-i2c
  40                - realtek,rtl9303-i2c
  41            - const: realtek,rtl9301-i2c
  42 -      - const: realtek,rtl9301-i2c
  43 +      - items:
  44 +          - enum:
  45 +              - realtek,rtl9311-i2c
  46 +              - realtek,rtl9312-i2c
  47 +              - realtek,rtl9313-i2c
  48 +          - const: realtek,rtl9310-i2c
  49 +      - enum:
  50 +          - realtek,rtl9301-i2c
  51 +          - realtek,rtl9310-i2c
  52
  53    reg:
  54      items:
  55 @@ -35,8 +45,14 @@ properties:
  56    "#size-cells":
  57      const: 0
  58
  59 +  realtek,scl:
  60 +    $ref: /schemas/types.yaml#/definitions/uint32
  61 +    description:
  62 +      The SCL line number of this I2C controller.
  63 +    enum: [ 0, 1 ]
  64 +
  65  patternProperties:
  66 -  '^i2c@[0-7]$':
  67 +  '^i2c@[0-9ab]$':
  68      $ref: /schemas/i2c/i2c-controller.yaml
  69      unevaluatedProperties: false
  70
  71 @@ -48,6 +64,25 @@ patternProperties:
  72      required:
  73        - reg
  74
  75 +
  76 +allOf:
  77 +  - if:
  78 +      properties:
  79 +        compatible:
  80 +          contains:
  81 +            const: realtek,rtl9310-i2c
  82 +    then:
  83 +      required:
  84 +        - realtek,scl
  85 +  - if:
  86 +      properties:
  87 +        compatible:
  88 +          contains:
  89 +            const: realtek,rtl9301-i2c
  90 +    then:
  91 +      patternProperties:
  92 +        '^i2c@[89ab]$': false
  93 +
  94  required:
  95    - compatible
  96    - reg
  97 --
  98 2.48.1
  99