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+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/sound/nvidia,tegra210-peq.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Tegra210 PEQ
+
+description:
+ The Parametric Equalizer (PEQ) is a cascade of biquad filters with
+ each filter tuned based on certain parameters. It can be used to
+ equalize the irregularities in the speaker frequency response.
+ PEQ sits inside Output Processing Engine (OPE) which interfaces
+ with Audio Hub (AHUB) via Audio Client Interface (ACIF).
+
+maintainers:
+ - Jon Hunter <jonathanh@nvidia.com>
+ - Mohan Kumar <mkumard@nvidia.com>
+ - Sameer Pujar <spujar@nvidia.com>
+
+properties:
+ compatible:
+ oneOf:
+ - const: nvidia,tegra210-peq
+ - items:
+ - enum:
+ - nvidia,tegra234-peq
+ - nvidia,tegra194-peq
+ - nvidia,tegra186-peq
+ - const: nvidia,tegra210-peq
+
+ reg:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ equalizer@702d8100 {
+ compatible = "nvidia,tegra210-peq";
+ reg = <0x702d8100 0x100>;
+ };
+
+...