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Jerome Brunet372401e2018-05-22 18:34:56 +02001* Amlogic AXG Audio Clock Controllers
2
3The Amlogic AXG audio clock controller generates and supplies clock to the
4other elements of the audio subsystem, such as fifos, i2s, spdif and pdm
5devices.
6
7Required Properties:
8
Jerome Brunet85549262019-03-29 17:06:46 +01009- compatible : should be "amlogic,axg-audio-clkc" for the A113X and A113D,
Jerome Brunet0ea0a182019-10-02 11:15:23 +020010 "amlogic,g12a-audio-clkc" for G12A,
11 "amlogic,sm1-audio-clkc" for S905X3.
Jerome Brunet372401e2018-05-22 18:34:56 +020012- reg : physical base address of the clock controller and length of
13 memory mapped region.
14- clocks : a list of phandle + clock-specifier pairs for the clocks listed
15 in clock-names.
16- clock-names : must contain the following:
17 * "pclk" - Main peripheral bus clock
18 may contain the following:
19 * "mst_in[0-7]" - 8 input plls to generate clock signals
20 * "slv_sclk[0-9]" - 10 slave bit clocks provided by external
21 components.
22 * "slv_lrclk[0-9]" - 10 slave sample clocks provided by external
23 components.
24- resets : phandle of the internal reset line
25- #clock-cells : should be 1.
Jerome Brunet06885872019-08-12 14:32:52 +020026- #reset-cells : should be 1 on the g12a (and following) soc family
Jerome Brunet372401e2018-05-22 18:34:56 +020027
28Each clock is assigned an identifier and client nodes can use this identifier
29to specify the clock which they consume. All available clocks are defined as
30preprocessor macros in the dt-bindings/clock/axg-audio-clkc.h header and can be
31used in device tree sources.
32
33Example:
34
35clkc_audio: clock-controller@0 {
36 compatible = "amlogic,axg-audio-clkc";
37 reg = <0x0 0x0 0x0 0xb4>;
38 #clock-cells = <1>;
39
40 clocks = <&clkc CLKID_AUDIO>,
41 <&clkc CLKID_MPLL0>,
42 <&clkc CLKID_MPLL1>,
43 <&clkc CLKID_MPLL2>,
44 <&clkc CLKID_MPLL3>,
45 <&clkc CLKID_HIFI_PLL>,
46 <&clkc CLKID_FCLK_DIV3>,
47 <&clkc CLKID_FCLK_DIV4>,
48 <&clkc CLKID_GP0_PLL>;
49 clock-names = "pclk",
50 "mst_in0",
51 "mst_in1",
52 "mst_in2",
53 "mst_in3",
54 "mst_in4",
55 "mst_in5",
56 "mst_in6",
57 "mst_in7";
58 resets = <&reset RESET_AUDIO>;
59};