1*45c6c5e0SSameer Pujar# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2*45c6c5e0SSameer Pujar%YAML 1.2 3*45c6c5e0SSameer Pujar--- 4*45c6c5e0SSameer Pujar$id: http://devicetree.org/schemas/sound/nvidia,tegra210-peq.yaml# 5*45c6c5e0SSameer Pujar$schema: http://devicetree.org/meta-schemas/core.yaml# 6*45c6c5e0SSameer Pujar 7*45c6c5e0SSameer Pujartitle: Tegra210 PEQ 8*45c6c5e0SSameer Pujar 9*45c6c5e0SSameer Pujardescription: 10*45c6c5e0SSameer Pujar The Parametric Equalizer (PEQ) is a cascade of biquad filters with 11*45c6c5e0SSameer Pujar each filter tuned based on certain parameters. It can be used to 12*45c6c5e0SSameer Pujar equalize the irregularities in the speaker frequency response. 13*45c6c5e0SSameer Pujar PEQ sits inside Output Processing Engine (OPE) which interfaces 14*45c6c5e0SSameer Pujar with Audio Hub (AHUB) via Audio Client Interface (ACIF). 15*45c6c5e0SSameer Pujar 16*45c6c5e0SSameer Pujarmaintainers: 17*45c6c5e0SSameer Pujar - Jon Hunter <jonathanh@nvidia.com> 18*45c6c5e0SSameer Pujar - Mohan Kumar <mkumard@nvidia.com> 19*45c6c5e0SSameer Pujar - Sameer Pujar <spujar@nvidia.com> 20*45c6c5e0SSameer Pujar 21*45c6c5e0SSameer Pujarproperties: 22*45c6c5e0SSameer Pujar compatible: 23*45c6c5e0SSameer Pujar oneOf: 24*45c6c5e0SSameer Pujar - const: nvidia,tegra210-peq 25*45c6c5e0SSameer Pujar - items: 26*45c6c5e0SSameer Pujar - enum: 27*45c6c5e0SSameer Pujar - nvidia,tegra234-peq 28*45c6c5e0SSameer Pujar - nvidia,tegra194-peq 29*45c6c5e0SSameer Pujar - nvidia,tegra186-peq 30*45c6c5e0SSameer Pujar - const: nvidia,tegra210-peq 31*45c6c5e0SSameer Pujar 32*45c6c5e0SSameer Pujar reg: 33*45c6c5e0SSameer Pujar maxItems: 1 34*45c6c5e0SSameer Pujar 35*45c6c5e0SSameer Pujarrequired: 36*45c6c5e0SSameer Pujar - compatible 37*45c6c5e0SSameer Pujar - reg 38*45c6c5e0SSameer Pujar 39*45c6c5e0SSameer PujaradditionalProperties: false 40*45c6c5e0SSameer Pujar 41*45c6c5e0SSameer Pujarexamples: 42*45c6c5e0SSameer Pujar - | 43*45c6c5e0SSameer Pujar equalizer@702d8100 { 44*45c6c5e0SSameer Pujar compatible = "nvidia,tegra210-peq"; 45*45c6c5e0SSameer Pujar reg = <0x702d8100 0x100>; 46*45c6c5e0SSameer Pujar }; 47*45c6c5e0SSameer Pujar 48*45c6c5e0SSameer Pujar... 49