1* Qualcomm Technologies LPASS CPU DAI
2
3This node models the Qualcomm Technologies Low-Power Audio SubSystem (LPASS).
4
5Required properties:
6
7- compatible		: "qcom,lpass-cpu" or "qcom,apq8016-lpass-cpu"
8- clocks		: Must contain an entry for each entry in clock-names.
9- clock-names		: A list which must include the following entries:
10				* "ahbix-clk"
11				* "mi2s-osr-clk"
12				* "mi2s-bit-clk"
13			: required clocks for "qcom,lpass-cpu-apq8016"
14				* "ahbix-clk"
15				* "mi2s-bit-clk0"
16				* "mi2s-bit-clk1"
17				* "mi2s-bit-clk2"
18				* "mi2s-bit-clk3"
19				* "pcnoc-mport-clk"
20				* "pcnoc-sway-clk"
21
22- interrupts		: Must contain an entry for each entry in
23			  interrupt-names.
24- interrupt-names	: A list which must include the following entries:
25				* "lpass-irq-lpaif"
26- pinctrl-N		: One property must exist for each entry in
27			  pinctrl-names.  See ../pinctrl/pinctrl-bindings.txt
28			  for details of the property values.
29- pinctrl-names		: Must contain a "default" entry.
30- reg			: Must contain an address for each entry in reg-names.
31- reg-names		: A list which must include the following entries:
32				* "lpass-lpaif"
33- #address-cells	: Must be 1
34- #size-cells		: Must be 0
35
36
37
38Optional properties:
39
40- qcom,adsp		: Phandle for the audio DSP node
41
42By default, the driver uses up to 4 MI2S SD lines, for a total of 8 channels.
43The SD lines to use can be configured by adding subnodes for each of the DAIs.
44
45Required properties for each DAI (represented by a subnode):
46- reg			: Must be one of the DAI IDs
47			  (usually part of dt-bindings header)
48- qcom,playback-sd-lines: List of serial data lines to use for playback
49			  Each SD line should be represented by a number from 0-3.
50- qcom,capture-sd-lines	: List of serial data lines to use for capture
51			  Each SD line should be represented by a number from 0-3.
52
53Note that adding a subnode changes the default to "no lines configured",
54so both playback and capture lines should be configured when a subnode is added.
55
56Example:
57
58lpass@28100000 {
59	compatible = "qcom,lpass-cpu";
60	clocks = <&lcc AHBIX_CLK>, <&lcc MI2S_OSR_CLK>, <&lcc MI2S_BIT_CLK>;
61	clock-names = "ahbix-clk", "mi2s-osr-clk", "mi2s-bit-clk";
62	interrupts = <0 85 1>;
63	interrupt-names = "lpass-irq-lpaif";
64	pinctrl-names = "default", "idle";
65	pinctrl-0 = <&mi2s_default>;
66	pinctrl-1 = <&mi2s_idle>;
67	reg = <0x28100000 0x10000>;
68	reg-names = "lpass-lpaif";
69	qcom,adsp = <&adsp>;
70
71	#address-cells = <1>;
72	#size-cells = <0>;
73
74	/* Optional to set different MI2S SD lines */
75	dai@3 {
76		reg = <MI2S_QUATERNARY>;
77		qcom,playback-sd-lines = <0 1>;
78	};
79};
80