18c2ecf20Sopenharmony_ci# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 28c2ecf20Sopenharmony_ci%YAML 1.2 38c2ecf20Sopenharmony_ci--- 48c2ecf20Sopenharmony_ci$id: http://devicetree.org/schemas/sound/nvidia,tegra186-dspk.yaml# 58c2ecf20Sopenharmony_ci$schema: http://devicetree.org/meta-schemas/core.yaml# 68c2ecf20Sopenharmony_ci 78c2ecf20Sopenharmony_cititle: Tegra186 DSPK Controller Device Tree Bindings 88c2ecf20Sopenharmony_ci 98c2ecf20Sopenharmony_cidescription: | 108c2ecf20Sopenharmony_ci The Digital Speaker Controller (DSPK) can be viewed as a Pulse 118c2ecf20Sopenharmony_ci Density Modulation (PDM) transmitter that up-samples the input to 128c2ecf20Sopenharmony_ci the desired sampling rate by interpolation and then converts the 138c2ecf20Sopenharmony_ci over sampled Pulse Code Modulation (PCM) input to the desired 1-bit 148c2ecf20Sopenharmony_ci output via Delta Sigma Modulation (DSM). 158c2ecf20Sopenharmony_ci 168c2ecf20Sopenharmony_cimaintainers: 178c2ecf20Sopenharmony_ci - Jon Hunter <jonathanh@nvidia.com> 188c2ecf20Sopenharmony_ci - Sameer Pujar <spujar@nvidia.com> 198c2ecf20Sopenharmony_ci 208c2ecf20Sopenharmony_ciproperties: 218c2ecf20Sopenharmony_ci $nodename: 228c2ecf20Sopenharmony_ci pattern: "^dspk@[0-9a-f]*$" 238c2ecf20Sopenharmony_ci 248c2ecf20Sopenharmony_ci compatible: 258c2ecf20Sopenharmony_ci oneOf: 268c2ecf20Sopenharmony_ci - const: nvidia,tegra186-dspk 278c2ecf20Sopenharmony_ci - items: 288c2ecf20Sopenharmony_ci - const: nvidia,tegra194-dspk 298c2ecf20Sopenharmony_ci - const: nvidia,tegra186-dspk 308c2ecf20Sopenharmony_ci 318c2ecf20Sopenharmony_ci reg: 328c2ecf20Sopenharmony_ci maxItems: 1 338c2ecf20Sopenharmony_ci 348c2ecf20Sopenharmony_ci clocks: 358c2ecf20Sopenharmony_ci maxItems: 1 368c2ecf20Sopenharmony_ci 378c2ecf20Sopenharmony_ci clock-names: 388c2ecf20Sopenharmony_ci const: dspk 398c2ecf20Sopenharmony_ci 408c2ecf20Sopenharmony_ci assigned-clocks: 418c2ecf20Sopenharmony_ci maxItems: 1 428c2ecf20Sopenharmony_ci 438c2ecf20Sopenharmony_ci assigned-clock-parents: 448c2ecf20Sopenharmony_ci maxItems: 1 458c2ecf20Sopenharmony_ci 468c2ecf20Sopenharmony_ci assigned-clock-rates: 478c2ecf20Sopenharmony_ci maxItems: 1 488c2ecf20Sopenharmony_ci 498c2ecf20Sopenharmony_ci sound-name-prefix: 508c2ecf20Sopenharmony_ci pattern: "^DSPK[1-9]$" 518c2ecf20Sopenharmony_ci $ref: /schemas/types.yaml#/definitions/string 528c2ecf20Sopenharmony_ci description: 538c2ecf20Sopenharmony_ci Used as prefix for sink/source names of the component. Must be a 548c2ecf20Sopenharmony_ci unique string among multiple instances of the same component. 558c2ecf20Sopenharmony_ci The name can be "DSPK1" or "DSPKx", where x depends on the maximum 568c2ecf20Sopenharmony_ci available instances on a Tegra SoC. 578c2ecf20Sopenharmony_ci 588c2ecf20Sopenharmony_cirequired: 598c2ecf20Sopenharmony_ci - compatible 608c2ecf20Sopenharmony_ci - reg 618c2ecf20Sopenharmony_ci - clocks 628c2ecf20Sopenharmony_ci - clock-names 638c2ecf20Sopenharmony_ci - assigned-clocks 648c2ecf20Sopenharmony_ci - assigned-clock-parents 658c2ecf20Sopenharmony_ci - sound-name-prefix 668c2ecf20Sopenharmony_ci 678c2ecf20Sopenharmony_ciadditionalProperties: false 688c2ecf20Sopenharmony_ci 698c2ecf20Sopenharmony_ciexamples: 708c2ecf20Sopenharmony_ci - | 718c2ecf20Sopenharmony_ci #include<dt-bindings/clock/tegra186-clock.h> 728c2ecf20Sopenharmony_ci 738c2ecf20Sopenharmony_ci dspk@2905000 { 748c2ecf20Sopenharmony_ci compatible = "nvidia,tegra186-dspk"; 758c2ecf20Sopenharmony_ci reg = <0x2905000 0x100>; 768c2ecf20Sopenharmony_ci clocks = <&bpmp TEGRA186_CLK_DSPK1>; 778c2ecf20Sopenharmony_ci clock-names = "dspk"; 788c2ecf20Sopenharmony_ci assigned-clocks = <&bpmp TEGRA186_CLK_DSPK1>; 798c2ecf20Sopenharmony_ci assigned-clock-parents = <&bpmp TEGRA186_CLK_PLL_A_OUT0>; 808c2ecf20Sopenharmony_ci assigned-clock-rates = <12288000>; 818c2ecf20Sopenharmony_ci sound-name-prefix = "DSPK1"; 828c2ecf20Sopenharmony_ci }; 838c2ecf20Sopenharmony_ci 848c2ecf20Sopenharmony_ci... 85