xref: /openbmc/linux/Documentation/devicetree/bindings/sound/cs35l34.txt (revision 93707cbabcc8baf2b2b5f4a99c1f08ee83eb7abd) 
1CS35L34 Speaker Amplifier
2
3Required properties:
4
5  - compatible : "cirrus,cs35l34"
6
7  - reg : the I2C address of the device for I2C.
8
9  - VA-supply, VP-supply : power supplies for the device,
10    as covered in
11    Documentation/devicetree/bindings/regulator/regulator.txt.
12
13  - cirrus,boost-vtge-millivolt : Boost Voltage Value.  Configures the boost
14    converter's output voltage in mV. The range is from VP to 8V with
15    increments of 100mV.
16
17  - cirrus,boost-nanohenry: Inductor value for boost converter. The value is
18    in nH and they can be values of 1000nH, 1100nH, 1200nH, 1500nH, and 2200nH.
19
20Optional properties:
21
22  - reset-gpios: GPIO used to reset the amplifier.
23
24  - interrupt-parent : Specifies the phandle of the interrupt controller to
25    which the IRQs from CS35L34 are delivered to.
26  - interrupts : IRQ line info CS35L34.
27    (See Documentation/devicetree/bindings/interrupt-controller/interrupts.txt
28    for further information relating to interrupt properties)
29
30  - cirrus,boost-peak-milliamp : Boost converter peak current limit in mA. The
31    range starts at 1200mA and goes to a maximum of 3840mA with increments of
32    80mA. The default value is 2480mA.
33
34  - cirrus,i2s-sdinloc : ADSP SDIN I2S channel location. Indicates whether the
35    received mono data is in the left or right portion of the I2S frame
36    according to the AD0 pin or directly via this configuration.
37    0x0 (Default) = Selected by AD0 input (if AD0 = LOW, use left channel),
38    0x2 = Left,
39    0x1 = Selected by the inversion of the AD0 input (if AD0 = LOW, use right
40    channel),
41    0x3 = Right.
42
43  - cirrus,gain-zc-disable: Boolean property. If set, the gain change will take
44    effect without waiting for a zero cross.
45
46  - cirrus,tdm-rising-edge: Boolean property. If set, data is on the rising edge of
47    SCLK. Otherwise, data is on the falling edge of SCLK.
48
49
50Example:
51
52cs35l34: cs35l34@40 {
53	compatible = "cirrus,cs35l34";
54	reg = <0x40>;
55
56	interrupt-parent = <&gpio8>;
57	interrupts = <3 IRQ_TYPE_LEVEL_LOW>;
58
59	reset-gpios = <&gpio 10 0>;
60
61	cirrus,boost-vtge-milltvolt = <8000>; /* 8V */
62	cirrus,boost-ind-nanohenry = <1000>; /* 1uH */
63	cirrus,boost-peak-milliamp = <3000>; /* 3A */
64};
65