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Documentation / devicetree / bindings / mfd / arizona.txt




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Based on kernel version 4.3. Page generated on 2015-11-02 12:45 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	        "wlf,wm8998"
14	        "wlf,wm1814"
15	
16	  - reg : I2C slave address when connected using I2C, chip select number when
17	    using SPI.
18	
19	  - interrupts : The interrupt line the /IRQ signal for the device is
20	    connected to.
21	  - interrupt-controller : Arizona class devices contain interrupt controllers
22	    and may provide interrupt services to other devices.
23	  - interrupt-parent : The parent interrupt controller.
24	  - #interrupt-cells: the number of cells to describe an IRQ, this should be 2.
25	    The first cell is the IRQ number.
26	    The second cell is the flags, encoded as the trigger masks from
27	    Documentation/devicetree/bindings/interrupts.txt
28	
29	  - gpio-controller : Indicates this device is a GPIO controller.
30	  - #gpio-cells : Must be 2. The first cell is the pin number and the
31	    second cell is used to specify optional parameters (currently unused).
32	
33	  - AVDD-supply, DBVDD1-supply, CPVDD-supply : Power supplies for the device,
34	    as covered in Documentation/devicetree/bindings/regulator/regulator.txt
35	
36	  - DBVDD2-supply, DBVDD3-supply : Additional databus power supplies (wm5102,
37	    wm5110, wm8280, wm8998, wm1814)
38	
39	  - SPKVDDL-supply, SPKVDDR-supply : Speaker driver power supplies (wm5102,
40	    wm5110, wm8280, wm8998, wm1814)
41	
42	  - SPKVDD-supply : Speaker driver power supply (wm8997)
43	
44	Optional properties:
45	
46	  - wlf,reset : GPIO specifier for the GPIO controlling /RESET
47	  - wlf,ldoena : GPIO specifier for the GPIO controlling LDOENA
48	
49	  - wlf,gpio-defaults : A list of GPIO configuration register values. Defines
50	    for the appropriate values can found in <dt-bindings/mfd/arizona.txt>. If
51	    absent, no configuration of these registers is performed. If any entry has
52	    a value that is out of range for a 16 bit register then the chip default
53	    will be used. If present exactly five values must be specified.
54	
55	  - wlf,inmode : A list of INn_MODE register values, where n is the number
56	    of input signals. Valid values are 0 (Differential), 1 (Single-ended) and
57	    2 (Digital Microphone). If absent, INn_MODE registers set to 0 by default.
58	    If present, values must be specified less than or equal to the number of
59	    input signals. If values less than the number of input signals, elements
60	    that have not been specified are set to 0 by default. Entries are:
61	    <IN1, IN2, IN3, IN4> (wm5102, wm5110, wm8280, wm8997)
62	    <IN1A, IN2A, IN1B, IN2B> (wm8998, wm1814)
63	
64	  - wlf,dmic-ref : DMIC reference voltage source for each input, can be
65	    selected from either MICVDD or one of the MICBIAS's, defines
66	    (ARIZONA_DMIC_xxxx) are provided in <dt-bindings/mfd/arizona.txt>. If
67	    present, the number of values should be less than or equal to the
68	    number of inputs, unspecified inputs will use the chip default.
69	
70	  - wlf,hpdet-channel : Headphone detection channel.
71	    ARIZONA_ACCDET_MODE_HPL or 1 - Headphone detect mode is set to HPDETL
72	    ARIZONA_ACCDET_MODE_HPR or 2 - Headphone detect mode is set to HPDETR
73	    If this node is not mentioned or if the value is unknown, then
74	    headphone detection mode is set to HPDETL.
75	
76	  - DCVDD-supply, MICVDD-supply : Power supplies, only need to be specified if
77	    they are being externally supplied. As covered in
78	    Documentation/devicetree/bindings/regulator/regulator.txt
79	
80	Optional subnodes:
81	  - ldo1 : Initial data for the LDO1 regulator, as covered in
82	    Documentation/devicetree/bindings/regulator/regulator.txt
83	  - micvdd : Initial data for the MICVDD regulator, as covered in
84	    Documentation/devicetree/bindings/regulator/regulator.txt
85	
86	Example:
87	
88	codec: wm5102@1a {
89		compatible = "wlf,wm5102";
90		reg = <0x1a>;
91		interrupts = <347>;
92		interrupt-controller;
93		#interrupt-cells = <2>;
94	        interrupt-parent = <&gic>;
95	
96		gpio-controller;
97		#gpio-cells = <2>;
98	
99		wlf,gpio-defaults = <
100			ARIZONA_GP_FN_TXLRCLK
101			ARIZONA_GP_DEFAULT
102			ARIZONA_GP_DEFAULT
103			ARIZONA_GP_DEFAULT
104			ARIZONA_GP_DEFAULT
105		>;
106	};
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