1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/sound/ti,j721e-cpb-ivi-audio.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Texas Instruments J721e Common Processor Board Audio Support
8
9maintainers:
10  - Peter Ujfalusi <peter.ujfalusi@ti.com>
11
12description: |
13  The Infotainment board plugs into the Common Processor Board, the support of the
14  extension board is extending the CPB audio support, decribed in:
15  sound/ti,j721e-cpb-audio.txt
16
17  The audio support on the Infotainment Expansion Board consists of McASP0
18  connected to two pcm3168a codecs with dedicated set of serializers to each.
19  The SCKI for pcm3168a is sourced from j721e AUDIO_REFCLK0 pin.
20
21  In order to support 48KHz and 44.1KHz family of sampling rates the parent clock
22  for AUDIO_REFCLK0 needs to be changed between PLL4 (for 48KHz) and PLL15 (for
23  44.1KHz). The same PLLs are used for McASP0's AUXCLK clock via different
24  HSDIVIDER.
25
26  Note: the same PLL4 and PLL15 is used by the audio support on the CPB!
27
28  Clocking setup for 48KHz family:
29  PLL4 ---> PLL4_HSDIV0 ---> MCASP10_AUXCLK ---> McASP10.auxclk
30        |                |-> MCASP0_AUXCLK  ---> McASP0.auxclk
31        |
32        |-> PLL4_HSDIV2 ---> AUDIO_REFCLK2  ---> pcm3168a.SCKI
33                         |-> AUDIO_REFCLK0  ---> pcm3168a_a/b.SCKI
34
35  Clocking setup for 44.1KHz family:
36  PLL15 ---> PLL15_HSDIV0 ---> MCASP10_AUXCLK ---> McASP10.auxclk
37        |                  |-> MCASP0_AUXCLK  ---> McASP0.auxclk
38        |
39        |-> PLL15_HSDIV2 ---> AUDIO_REFCLK2   ---> pcm3168a.SCKI
40                          |-> AUDIO_REFCLK0   ---> pcm3168a_a/b.SCKI
41
42properties:
43  compatible:
44    items:
45      - const: ti,j721e-cpb-ivi-audio
46
47  model:
48    $ref: /schemas/types.yaml#/definitions/string
49    description: User specified audio sound card name
50
51  ti,cpb-mcasp:
52    description: phandle to McASP used on CPB
53    $ref: /schemas/types.yaml#/definitions/phandle
54
55  ti,cpb-codec:
56    description: phandle to the pcm3168a codec used on the CPB
57    $ref: /schemas/types.yaml#/definitions/phandle
58
59  ti,ivi-mcasp:
60    description: phandle to McASP used on IVI
61    $ref: /schemas/types.yaml#/definitions/phandle
62
63  ti,ivi-codec-a:
64    description: phandle to the pcm3168a-A codec on the expansion board
65    $ref: /schemas/types.yaml#/definitions/phandle
66
67  ti,ivi-codec-b:
68    description: phandle to the pcm3168a-B codec on the expansion board
69    $ref: /schemas/types.yaml#/definitions/phandle
70
71  clocks:
72    items:
73      - description: AUXCLK clock for McASP used by CPB audio
74      - description: Parent for CPB_McASP auxclk (for 48KHz)
75      - description: Parent for CPB_McASP auxclk (for 44.1KHz)
76      - description: SCKI clock for the pcm3168a codec on CPB
77      - description: Parent for CPB_SCKI clock (for 48KHz)
78      - description: Parent for CPB_SCKI clock (for 44.1KHz)
79      - description: AUXCLK clock for McASP used by IVI audio
80      - description: Parent for IVI_McASP auxclk (for 48KHz)
81      - description: Parent for IVI_McASP auxclk (for 44.1KHz)
82      - description: SCKI clock for the pcm3168a codec on IVI
83      - description: Parent for IVI_SCKI clock (for 48KHz)
84      - description: Parent for IVI_SCKI clock (for 44.1KHz)
85
86  clock-names:
87    items:
88      - const: cpb-mcasp-auxclk
89      - const: cpb-mcasp-auxclk-48000
90      - const: cpb-mcasp-auxclk-44100
91      - const: cpb-codec-scki
92      - const: cpb-codec-scki-48000
93      - const: cpb-codec-scki-44100
94      - const: ivi-mcasp-auxclk
95      - const: ivi-mcasp-auxclk-48000
96      - const: ivi-mcasp-auxclk-44100
97      - const: ivi-codec-scki
98      - const: ivi-codec-scki-48000
99      - const: ivi-codec-scki-44100
100
101required:
102  - compatible
103  - model
104  - ti,cpb-mcasp
105  - ti,cpb-codec
106  - ti,ivi-mcasp
107  - ti,ivi-codec-a
108  - ti,ivi-codec-b
109  - clocks
110  - clock-names
111
112additionalProperties: false
113
114examples:
115  - |+
116    sound {
117        compatible = "ti,j721e-cpb-ivi-audio";
118        model = "j721e-cpb-ivi";
119
120        status = "okay";
121
122        ti,cpb-mcasp = <&mcasp10>;
123        ti,cpb-codec = <&pcm3168a_1>;
124
125        ti,ivi-mcasp = <&mcasp0>;
126        ti,ivi-codec-a = <&pcm3168a_a>;
127        ti,ivi-codec-b = <&pcm3168a_b>;
128
129        clocks = <&k3_clks 184 1>,
130                 <&k3_clks 184 2>, <&k3_clks 184 4>,
131                 <&k3_clks 157 371>,
132                 <&k3_clks 157 400>, <&k3_clks 157 401>,
133                 <&k3_clks 174 1>,
134                 <&k3_clks 174 2>, <&k3_clks 174 4>,
135                 <&k3_clks 157 301>,
136                 <&k3_clks 157 330>, <&k3_clks 157 331>;
137        clock-names = "cpb-mcasp-auxclk",
138                      "cpb-mcasp-auxclk-48000", "cpb-mcasp-auxclk-44100",
139                      "cpb-codec-scki",
140                      "cpb-codec-scki-48000", "cpb-codec-scki-44100",
141                      "ivi-mcasp-auxclk",
142                      "ivi-mcasp-auxclk-48000", "ivi-mcasp-auxclk-44100",
143                      "ivi-codec-scki",
144                      "ivi-codec-scki-48000", "ivi-codec-scki-44100";
145    };
146