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Documentation / devicetree / bindings / mfd / arizona.txt




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Based on kernel version 4.1. Page generated on 2015-06-28 12:09 EST.

1	Wolfson Arizona class audio SoCs
2	
3	These devices are audio SoCs with extensive digital capabilites and a range
4	of analogue I/O.
5	
6	Required properties:
7	
8	  - compatible : One of the following chip-specific strings:
9	        "wlf,wm5102"
10	        "wlf,wm5110"
11	        "wlf,wm8280"
12	        "wlf,wm8997"
13	  - reg : I2C slave address when connected using I2C, chip select number when
14	    using SPI.
15	
16	  - interrupts : The interrupt line the /IRQ signal for the device is
17	    connected to.
18	  - interrupt-controller : Arizona class devices contain interrupt controllers
19	    and may provide interrupt services to other devices.
20	  - interrupt-parent : The parent interrupt controller.
21	  - #interrupt-cells: the number of cells to describe an IRQ, this should be 2.
22	    The first cell is the IRQ number.
23	    The second cell is the flags, encoded as the trigger masks from
24	    Documentation/devicetree/bindings/interrupts.txt
25	
26	  - gpio-controller : Indicates this device is a GPIO controller.
27	  - #gpio-cells : Must be 2. The first cell is the pin number and the
28	    second cell is used to specify optional parameters (currently unused).
29	
30	  - AVDD-supply, DBVDD1-supply, CPVDD-supply : Power supplies for the device,
31	    as covered in Documentation/devicetree/bindings/regulator/regulator.txt
32	
33	  - DBVDD2-supply, DBVDD3-supply : Additional databus power supplies (wm5102,
34	    wm5110, wm8280)
35	
36	  - SPKVDDL-supply, SPKVDDR-supply : Speaker driver power supplies (wm5102,
37	    wm5110, wm8280)
38	
39	  - SPKVDD-supply : Speaker driver power supply (wm8997)
40	
41	Optional properties:
42	
43	  - wlf,reset : GPIO specifier for the GPIO controlling /RESET
44	  - wlf,ldoena : GPIO specifier for the GPIO controlling LDOENA
45	
46	  - wlf,gpio-defaults : A list of GPIO configuration register values. Defines
47	    for the appropriate values can found in <dt-bindings/mfd/arizona.txt>. If
48	    absent, no configuration of these registers is performed. If any entry has
49	    a value that is out of range for a 16 bit register then the chip default
50	    will be used. If present exactly five values must be specified.
51	
52	  - wlf,inmode : A list of INn_MODE register values, where n is the number
53	    of input signals. Valid values are 0 (Differential), 1 (Single-ended) and
54	    2 (Digital Microphone). If absent, INn_MODE registers set to 0 by default.
55	    If present, values must be specified less than or equal to the number of
56	    input singals. If values less than the number of input signals, elements
57	    that has not been specifed are set to 0 by default.
58	
59	  - wlf,dmic-ref : DMIC reference voltage source for each input, can be
60	    selected from either MICVDD or one of the MICBIAS's, defines
61	    (ARIZONA_DMIC_xxxx) are provided in <dt-bindings/mfd/arizona.txt>. If
62	    present, the number of values should be less than or equal to the
63	    number of inputs, unspecified inputs will use the chip default.
64	
65	  - DCVDD-supply, MICVDD-supply : Power supplies, only need to be specified if
66	    they are being externally supplied. As covered in
67	    Documentation/devicetree/bindings/regulator/regulator.txt
68	
69	Optional subnodes:
70	  - ldo1 : Initial data for the LDO1 regulator, as covered in
71	    Documentation/devicetree/bindings/regulator/regulator.txt
72	  - micvdd : Initial data for the MICVDD regulator, as covered in
73	    Documentation/devicetree/bindings/regulator/regulator.txt
74	
75	Example:
76	
77	codec: wm5102@1a {
78		compatible = "wlf,wm5102";
79		reg = <0x1a>;
80		interrupts = <347>;
81		interrupt-controller;
82		#interrupt-cells = <2>;
83	        interrupt-parent = <&gic>;
84	
85		gpio-controller;
86		#gpio-cells = <2>;
87	
88		wlf,gpio-defaults = <
89			ARIZONA_GP_FN_TXLRCLK
90			ARIZONA_GP_DEFAULT
91			ARIZONA_GP_DEFAULT
92			ARIZONA_GP_DEFAULT
93			ARIZONA_GP_DEFAULT
94		>;
95	};
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