# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2 --- $id: http://devicetree.org/schemas/sound/ti,j721e-cpb-audio.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# title: Texas Instruments J721e Common Processor Board Audio Support maintainers: - Peter Ujfalusi description: | The audio support on the board is using pcm3168a codec connected to McASP10 serializers in parallel setup. The pcm3168a SCKI clock is sourced from j721e AUDIO_REFCLK2 pin. In order to support 48KHz and 44.1KHz family of sampling rates the parent clock for AUDIO_REFCLK2 needs to be changed between PLL4 (for 48KHz) and PLL15 (for 44.1KHz). The same PLLs are used for McASP10's AUXCLK clock via different HSDIVIDER. Clocking setup for j721e: 48KHz family: PLL4 ---> PLL4_HSDIV0 ---> MCASP10_AUXCLK ---> McASP10.auxclk |-> PLL4_HSDIV2 ---> AUDIO_REFCLK2 ---> pcm3168a.SCKI 44.1KHz family: PLL15 ---> PLL15_HSDIV0 ---> MCASP10_AUXCLK ---> McASP10.auxclk |-> PLL15_HSDIV2 ---> AUDIO_REFCLK2 ---> pcm3168a.SCKI Clocking setup for j7200: 48KHz family: PLL4 ---> PLL4_HSDIV0 ---> MCASP0_AUXCLK ---> McASP0.auxclk |-> PLL4_HSDIV2 ---> AUDIO_REFCLK2 ---> pcm3168a.SCKI properties: compatible: enum: - ti,j721e-cpb-audio - ti,j7200-cpb-audio model: $ref: /schemas/types.yaml#/definitions/string description: User specified audio sound card name ti,cpb-mcasp: description: phandle to McASP used on CPB $ref: /schemas/types.yaml#/definitions/phandle ti,cpb-codec: description: phandle to the pcm3168a codec used on the CPB $ref: /schemas/types.yaml#/definitions/phandle clocks: minItems: 4 maxItems: 6 clock-names: minItems: 4 maxItems: 6 required: - compatible - model - ti,cpb-mcasp - ti,cpb-codec - clocks - clock-names additionalProperties: false allOf: - if: properties: compatible: contains: const: ti,j721e-cpb-audio then: properties: clocks: minItems: 6 items: - description: AUXCLK clock for McASP used by CPB audio - description: Parent for CPB_McASP auxclk (for 48KHz) - description: Parent for CPB_McASP auxclk (for 44.1KHz) - description: SCKI clock for the pcm3168a codec on CPB - description: Parent for CPB_SCKI clock (for 48KHz) - description: Parent for CPB_SCKI clock (for 44.1KHz) clock-names: items: - const: cpb-mcasp-auxclk - const: cpb-mcasp-auxclk-48000 - const: cpb-mcasp-auxclk-44100 - const: cpb-codec-scki - const: cpb-codec-scki-48000 - const: cpb-codec-scki-44100 - if: properties: compatible: contains: const: ti,j7200-cpb-audio then: properties: clocks: maxItems: 4 items: - description: AUXCLK clock for McASP used by CPB audio - description: Parent for CPB_McASP auxclk (for 48KHz) - description: SCKI clock for the pcm3168a codec on CPB - description: Parent for CPB_SCKI clock (for 48KHz) clock-names: items: - const: cpb-mcasp-auxclk - const: cpb-mcasp-auxclk-48000 - const: cpb-codec-scki - const: cpb-codec-scki-48000 examples: - |+ sound { compatible = "ti,j721e-cpb-audio"; model = "j721e-cpb"; status = "okay"; ti,cpb-mcasp = <&mcasp10>; ti,cpb-codec = <&pcm3168a_1>; clocks = <&k3_clks 184 1>, <&k3_clks 184 2>, <&k3_clks 184 4>, <&k3_clks 157 371>, <&k3_clks 157 400>, <&k3_clks 157 401>; clock-names = "cpb-mcasp-auxclk", "cpb-mcasp-auxclk-48000", "cpb-mcasp-auxclk-44100", "cpb-codec-scki", "cpb-codec-scki-48000", "cpb-codec-scki-44100"; };