1*4882a593Smuzhiyun# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2*4882a593Smuzhiyun%YAML 1.2 3*4882a593Smuzhiyun--- 4*4882a593Smuzhiyun$id: http://devicetree.org/schemas/sound/nvidia,tegra186-dspk.yaml# 5*4882a593Smuzhiyun$schema: http://devicetree.org/meta-schemas/core.yaml# 6*4882a593Smuzhiyun 7*4882a593Smuzhiyuntitle: Tegra186 DSPK Controller Device Tree Bindings 8*4882a593Smuzhiyun 9*4882a593Smuzhiyundescription: | 10*4882a593Smuzhiyun The Digital Speaker Controller (DSPK) can be viewed as a Pulse 11*4882a593Smuzhiyun Density Modulation (PDM) transmitter that up-samples the input to 12*4882a593Smuzhiyun the desired sampling rate by interpolation and then converts the 13*4882a593Smuzhiyun over sampled Pulse Code Modulation (PCM) input to the desired 1-bit 14*4882a593Smuzhiyun output via Delta Sigma Modulation (DSM). 15*4882a593Smuzhiyun 16*4882a593Smuzhiyunmaintainers: 17*4882a593Smuzhiyun - Jon Hunter <jonathanh@nvidia.com> 18*4882a593Smuzhiyun - Sameer Pujar <spujar@nvidia.com> 19*4882a593Smuzhiyun 20*4882a593Smuzhiyunproperties: 21*4882a593Smuzhiyun $nodename: 22*4882a593Smuzhiyun pattern: "^dspk@[0-9a-f]*$" 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun compatible: 25*4882a593Smuzhiyun oneOf: 26*4882a593Smuzhiyun - const: nvidia,tegra186-dspk 27*4882a593Smuzhiyun - items: 28*4882a593Smuzhiyun - const: nvidia,tegra194-dspk 29*4882a593Smuzhiyun - const: nvidia,tegra186-dspk 30*4882a593Smuzhiyun 31*4882a593Smuzhiyun reg: 32*4882a593Smuzhiyun maxItems: 1 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun clocks: 35*4882a593Smuzhiyun maxItems: 1 36*4882a593Smuzhiyun 37*4882a593Smuzhiyun clock-names: 38*4882a593Smuzhiyun const: dspk 39*4882a593Smuzhiyun 40*4882a593Smuzhiyun assigned-clocks: 41*4882a593Smuzhiyun maxItems: 1 42*4882a593Smuzhiyun 43*4882a593Smuzhiyun assigned-clock-parents: 44*4882a593Smuzhiyun maxItems: 1 45*4882a593Smuzhiyun 46*4882a593Smuzhiyun assigned-clock-rates: 47*4882a593Smuzhiyun maxItems: 1 48*4882a593Smuzhiyun 49*4882a593Smuzhiyun sound-name-prefix: 50*4882a593Smuzhiyun pattern: "^DSPK[1-9]$" 51*4882a593Smuzhiyun $ref: /schemas/types.yaml#/definitions/string 52*4882a593Smuzhiyun description: 53*4882a593Smuzhiyun Used as prefix for sink/source names of the component. Must be a 54*4882a593Smuzhiyun unique string among multiple instances of the same component. 55*4882a593Smuzhiyun The name can be "DSPK1" or "DSPKx", where x depends on the maximum 56*4882a593Smuzhiyun available instances on a Tegra SoC. 57*4882a593Smuzhiyun 58*4882a593Smuzhiyunrequired: 59*4882a593Smuzhiyun - compatible 60*4882a593Smuzhiyun - reg 61*4882a593Smuzhiyun - clocks 62*4882a593Smuzhiyun - clock-names 63*4882a593Smuzhiyun - assigned-clocks 64*4882a593Smuzhiyun - assigned-clock-parents 65*4882a593Smuzhiyun - sound-name-prefix 66*4882a593Smuzhiyun 67*4882a593SmuzhiyunadditionalProperties: false 68*4882a593Smuzhiyun 69*4882a593Smuzhiyunexamples: 70*4882a593Smuzhiyun - | 71*4882a593Smuzhiyun #include<dt-bindings/clock/tegra186-clock.h> 72*4882a593Smuzhiyun 73*4882a593Smuzhiyun dspk@2905000 { 74*4882a593Smuzhiyun compatible = "nvidia,tegra186-dspk"; 75*4882a593Smuzhiyun reg = <0x2905000 0x100>; 76*4882a593Smuzhiyun clocks = <&bpmp TEGRA186_CLK_DSPK1>; 77*4882a593Smuzhiyun clock-names = "dspk"; 78*4882a593Smuzhiyun assigned-clocks = <&bpmp TEGRA186_CLK_DSPK1>; 79*4882a593Smuzhiyun assigned-clock-parents = <&bpmp TEGRA186_CLK_PLL_A_OUT0>; 80*4882a593Smuzhiyun assigned-clock-rates = <12288000>; 81*4882a593Smuzhiyun sound-name-prefix = "DSPK1"; 82*4882a593Smuzhiyun }; 83*4882a593Smuzhiyun 84*4882a593Smuzhiyun... 85