1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/clock/fsl,sai-clock.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Freescale SAI bitclock-as-a-clock
8
9 maintainers:
10 - Michael Walle <michael@walle.cc>
11
12 description: |
13 It is possible to use the BCLK pin of a SAI module as a generic clock
14 output. Some SoC are very constrained in their pin multiplexer
15 configuration. Eg. pins can only be changed groups. For example, on the
16 LS1028A SoC you can only enable SAIs in pairs. If you use only one SAI,
17 the second pins are wasted. Using this binding it is possible to use the
18 clock of the second SAI as a MCLK clock for an audio codec, for example.
19
20 This is a composite of a gated clock and a divider clock.
21
22 properties:
23 compatible:
24 const: fsl,vf610-sai-clock
25
26 reg:
27 maxItems: 1
28
29 clocks:
30 maxItems: 1
31
32 '#clock-cells':
33 const: 0
34
35 required:
36 - compatible
37 - reg
38 - clocks
39 - '#clock-cells'
40
41 additionalProperties: false
42
43 examples:
44 - |
45 soc {
46 #address-cells = <2>;
47 #size-cells = <2>;
48
49 mclk: clock-mclk@f130080 {
50 compatible = "fsl,vf610-sai-clock";
51 reg = <0x0 0xf130080 0x0 0x80>;
52 #clock-cells = <0>;
53 clocks = <&parentclk>;
54 };
55 };
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