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     1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/sound/wlf,wm8978.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: Wolfson WM8978 Codec Device Tree Bindings
    8 
    9 maintainers:
   10   - patches@opensource.cirrus.com
   11 
   12 properties:
   13   '#sound-dai-cells':
   14     const: 0
   15 
   16   compatible:
   17     const: wlf,wm8978
   18 
   19   reg:
   20     maxItems: 1
   21 
   22   spi-max-frequency:
   23     maximum: 526000
   24 
   25 required:
   26   - '#sound-dai-cells'
   27   - compatible
   28   - reg
   29 
   30 additionalProperties: false
   31 
   32 examples:
   33   - |
   34     spi {
   35         #address-cells = <1>;
   36         #size-cells = <0>;
   37 
   38         codec@0 {
   39             #sound-dai-cells = <0>;
   40             compatible = "wlf,wm8978";
   41             reg = <0>;
   42             spi-max-frequency = <500000>;
   43         };
   44     };
   45 
   46   - |
   47     i2c {
   48         #address-cells = <1>;
   49         #size-cells = <0>;
   50 
   51         codec@1a {
   52             #sound-dai-cells = <0>;
   53             compatible = "wlf,wm8978";
   54             reg = <0x1a>;
   55         };
   56     };
   57 
   58 ...
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