xref: /linux/Documentation/devicetree/bindings/sound/da7218.txt (revision ae22a94997b8a03dcb3c922857c203246711f9d4) 
1Dialog Semiconductor DA7218 Audio Codec bindings
2
3DA7218 is an audio codec with HP detect feature.
4
5======
6
7Required properties:
8- compatible : Should be "dlg,da7217" or "dlg,da7218"
9- reg: Specifies the I2C slave address
10
11- VDD-supply: VDD power supply for the device
12- VDDMIC-supply: VDDMIC power supply for the device
13- VDDIO-supply: VDDIO power supply for the device
14  (See Documentation/devicetree/bindings/regulator/regulator.txt for further
15   information relating to regulators)
16
17Optional properties:
18- interrupts: IRQ line info for DA7218 chip.
19  (See Documentation/devicetree/bindings/interrupt-controller/interrupts.txt for
20   further information relating to interrupt properties)
21- interrupt-names : Name associated with interrupt line. Should be "wakeup" if
22  interrupt is to be used to wake system, otherwise "irq" should be used.
23- wakeup-source: Flag to indicate this device can wake system (suspend/resume).
24
25- clocks : phandle and clock specifier for codec MCLK.
26- clock-names : Clock name string for 'clocks' attribute, should be "mclk".
27
28- dlg,micbias1-lvl-millivolt : Voltage (mV) for Mic Bias 1
29	[<1200>, <1600>, <1800>, <2000>, <2200>, <2400>, <2600>, <2800>, <3000>]
30- dlg,micbias2-lvl-millivolt : Voltage (mV) for Mic Bias 2
31	[<1200>, <1600>, <1800>, <2000>, <2200>, <2400>, <2600>, <2800>, <3000>]
32- dlg,mic1-amp-in-sel : Mic1 input source type
33	["diff", "se_p", "se_n"]
34- dlg,mic2-amp-in-sel : Mic2 input source type
35	["diff", "se_p", "se_n"]
36- dlg,dmic1-data-sel : DMIC1 channel select based on clock edge.
37	["lrise_rfall", "lfall_rrise"]
38- dlg,dmic1-samplephase : When to sample audio from DMIC1.
39	["on_clkedge", "between_clkedge"]
40- dlg,dmic1-clkrate-hz : DMic1 clock frequency (Hz).
41	[<1500000>, <3000000>]
42- dlg,dmic2-data-sel : DMic2 channel select based on clock edge.
43	["lrise_rfall", "lfall_rrise"]
44- dlg,dmic2-samplephase : When to sample audio from DMic2.
45	["on_clkedge", "between_clkedge"]
46- dlg,dmic2-clkrate-hz : DMic2 clock frequency (Hz).
47	[<1500000>, <3000000>]
48- dlg,hp-diff-single-supply : Boolean flag, use single supply for HP
49			      (DA7217 only)
50
51======
52
53Optional Child node - 'da7218_hpldet' (DA7218 only):
54
55Optional properties:
56- dlg,jack-rate-us : Time between jack detect measurements (us)
57	[<5>, <10>, <20>, <40>, <80>, <160>, <320>, <640>]
58- dlg,jack-debounce : Number of debounce measurements taken for jack detect
59	[<0>, <2>, <3>, <4>]
60- dlg,jack-threshold-pct : Threshold level for jack detection (% of VDD)
61	[<84>, <88>, <92>, <96>]
62- dlg,comp-inv : Boolean flag, invert comparator output
63- dlg,hyst : Boolean flag, enable hysteresis
64- dlg,discharge : Boolean flag, auto discharge of Mic Bias on jack removal
65
66======
67
68Example:
69
70	codec: da7218@1a {
71		compatible = "dlg,da7218";
72		reg = <0x1a>;
73		interrupt-parent = <&gpio6>;
74		interrupts = <11 IRQ_TYPE_LEVEL_LOW>;
75		wakeup-source;
76
77		VDD-supply = <&reg_audio>;
78		VDDMIC-supply = <&reg_audio>;
79		VDDIO-supply = <&reg_audio>;
80
81		clocks = <&clks 201>;
82		clock-names = "mclk";
83
84		dlg,micbias1-lvl-millivolt = <2600>;
85		dlg,micbias2-lvl-millivolt = <2600>;
86		dlg,mic1-amp-in-sel = "diff";
87		dlg,mic2-amp-in-sel = "diff";
88
89		dlg,dmic1-data-sel = "lrise_rfall";
90		dlg,dmic1-samplephase = "on_clkedge";
91		dlg,dmic1-clkrate-hz = <3000000>;
92		dlg,dmic2-data-sel = "lrise_rfall";
93		dlg,dmic2-samplephase = "on_clkedge";
94		dlg,dmic2-clkrate-hz = <3000000>;
95
96		da7218_hpldet {
97			dlg,jack-rate-us = <40>;
98			dlg,jack-debounce = <2>;
99			dlg,jack-threshold-pct = <84>;
100			dlg,hyst;
101		};
102	};
103