1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 # Copyright (C) 2020 Texas Instruments Incorporated
3 # Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
6 $id: http://devicetree.org/schemas/sound/ti,j721e-cpb-audio.yaml#
7 $schema: http://devicetree.org/meta-schemas/core.yaml#
9 title: Texas Instruments J721e Common Processor Board Audio Support
12 - Peter Ujfalusi <peter.ujfalusi@gmail.com>
15 The audio support on the board is using pcm3168a codec connected to McASP10
16 serializers in parallel setup.
17 The pcm3168a SCKI clock is sourced from j721e AUDIO_REFCLK2 pin.
18 In order to support 48KHz and 44.1KHz family of sampling rates the parent
19 clock for AUDIO_REFCLK2 needs to be changed between PLL4 (for 48KHz) and
20 PLL15 (for 44.1KHz). The same PLLs are used for McASP10's AUXCLK clock via
23 Clocking setup for j721e:
25 PLL4 ---> PLL4_HSDIV0 ---> MCASP10_AUXCLK ---> McASP10.auxclk
26 |-> PLL4_HSDIV2 ---> AUDIO_REFCLK2 ---> pcm3168a.SCKI
29 PLL15 ---> PLL15_HSDIV0 ---> MCASP10_AUXCLK ---> McASP10.auxclk
30 |-> PLL15_HSDIV2 ---> AUDIO_REFCLK2 ---> pcm3168a.SCKI
32 Clocking setup for j7200:
34 PLL4 ---> PLL4_HSDIV0 ---> MCASP0_AUXCLK ---> McASP0.auxclk
35 |-> PLL4_HSDIV2 ---> AUDIO_REFCLK2 ---> pcm3168a.SCKI
44 $ref: /schemas/types.yaml#/definitions/string
45 description: User specified audio sound card name
48 description: phandle to McASP used on CPB
49 $ref: /schemas/types.yaml#/definitions/phandle
52 description: phandle to the pcm3168a codec used on the CPB
53 $ref: /schemas/types.yaml#/definitions/phandle
71 additionalProperties: false
78 const: ti,j721e-cpb-audio
85 - description: AUXCLK clock for McASP used by CPB audio
86 - description: Parent for CPB_McASP auxclk (for 48KHz)
87 - description: Parent for CPB_McASP auxclk (for 44.1KHz)
88 - description: SCKI clock for the pcm3168a codec on CPB
89 - description: Parent for CPB_SCKI clock (for 48KHz)
90 - description: Parent for CPB_SCKI clock (for 44.1KHz)
94 - const: cpb-mcasp-auxclk
95 - const: cpb-mcasp-auxclk-48000
96 - const: cpb-mcasp-auxclk-44100
97 - const: cpb-codec-scki
98 - const: cpb-codec-scki-48000
99 - const: cpb-codec-scki-44100
105 const: ti,j7200-cpb-audio
112 - description: AUXCLK clock for McASP used by CPB audio
113 - description: Parent for CPB_McASP auxclk (for 48KHz)
114 - description: SCKI clock for the pcm3168a codec on CPB
115 - description: Parent for CPB_SCKI clock (for 48KHz)
119 - const: cpb-mcasp-auxclk
120 - const: cpb-mcasp-auxclk-48000
121 - const: cpb-codec-scki
122 - const: cpb-codec-scki-48000
127 compatible = "ti,j721e-cpb-audio";
132 ti,cpb-mcasp = <&mcasp10>;
133 ti,cpb-codec = <&pcm3168a_1>;
135 clocks = <&k3_clks 184 1>,
136 <&k3_clks 184 2>, <&k3_clks 184 4>,
138 <&k3_clks 157 400>, <&k3_clks 157 401>;
139 clock-names = "cpb-mcasp-auxclk",
140 "cpb-mcasp-auxclk-48000", "cpb-mcasp-auxclk-44100",
142 "cpb-codec-scki-48000", "cpb-codec-scki-44100";