Documentation/devicetree/bindings/sound/nvidia,tegra210-peq.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/sound/nvidia,tegra210-peq.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Tegra210 PEQ
   8
   9 description:
  10   The Parametric Equalizer (PEQ) is a cascade of biquad filters with
  11   each filter tuned based on certain parameters. It can be used to
  12   equalize the irregularities in the speaker frequency response.
  13   PEQ sits inside Output Processing Engine (OPE) which interfaces
  14   with Audio Hub (AHUB) via Audio Client Interface (ACIF).
  15
  16 maintainers:
  17   - Jon Hunter <jonathanh@nvidia.com>
  18   - Mohan Kumar <mkumard@nvidia.com>
  19   - Sameer Pujar <spujar@nvidia.com>
  20
  21 properties:
  22   compatible:
  23     oneOf:
  24       - const: nvidia,tegra210-peq
  25       - items:
  26           - enum:
  27               - nvidia,tegra234-peq
  28               - nvidia,tegra194-peq
  29               - nvidia,tegra186-peq
  30           - const: nvidia,tegra210-peq
  31
  32   reg:
  33     maxItems: 1
  34
  35 required:
  36   - compatible
  37   - reg
  38
  39 additionalProperties: false
  40
  41 examples:
  42   - |
  43     equalizer@702d8100 {
  44         compatible = "nvidia,tegra210-peq";
  45         reg = <0x702d8100 0x100>;
  46     };
  47
  48 ...