1 CS43130 DAC
2
3 Required properties:
4
5 - compatible : "cirrus,cs43130", "cirrus,cs4
6 "cirrus,cs43198"
7
8 - reg : the I2C address of the device for I2
9
10 - VA-supply, VP-supply, VL-supply, VCP-suppl
11 power supplies for the device, as cove
12 Documentation/devicetree/bindings/regu
13
14
15 Optional properties:
16
17 - reset-gpios : Active low GPIO used to rese
18
19 - cirrus,xtal-ibias:
20 When external MCLK is generated by external
21 oscillator, CS43130 can be used to provide
22 for external crystal. Amount of bias curre
23 set as:
24 1 = 7.5uA
25 2 = 12.5uA
26 3 = 15uA
27
28 - cirrus,dc-measure:
29 Boolean, define to enable headphone DC impe
30
31 - cirrus,ac-measure:
32 Boolean, define to enable headphone AC impe
33 DC impedance must also be enabled for AC im
34
35 - cirrus,dc-threshold:
36 Define 2 DC impedance thresholds in ohms fo
37 Default values are 50 and 120 Ohms.
38
39 - cirrus,ac-freq:
40 Define the frequencies at which to measure
41 Only used if "cirrus,dc-measure" is defined
42 Exactly 10 frequencies must be defined.
43 If this properties is undefined, by default
44 following frequencies are used:
45 <24 43 93 200 431 928 2000 4309 9283 20000>
46 The above frequencies are logarithmically e
47 Log base is 10.
48
49 Example:
50
51 cs43130: audio-codec@30 {
52 compatible = "cirrus,cs43130";
53 reg = <0x30>;
54 reset-gpios = <&axi_gpio 54 0>;
55 VA-supply = <&dummy_vreg>;
56 VP-supply = <&dummy_vreg>;
57 VL-supply = <&dummy_vreg>;
58 VCP-supply = <&dummy_vreg>;
59 VD-supply = <&dummy_vreg>;
60 cirrus,xtal-ibias = <2>;
61 interrupt-parent = <&gpio0>;
62 interrupts = <55 8>;
63 cirrus,dc-measure;
64 cirrus,ac-measure;
65 cirrus,dc-threshold = /bits/ 16 <20 100>;
66 cirrus,ac-freq = /bits/ 16 <24 43 93 200 43
67 };
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.