1 Regulator of AMS AS3722 PMIC.
2 Name of the regulator subnode must be "regulators".
3
4 Optional properties:
5 --------------------
6 The input supply of regulators are the optional properties on the
7 regulator node. The AS3722 is having 7 DCDC step-down regulators as
8 sd[0-6], 10 LDOs as ldo[0-7], ldo[9-11]. The input supply of these
9 regulators are provided through following properties:
10 vsup-sd2-supply: Input supply for SD2.
11 vsup-sd3-supply: Input supply for SD3.
12 vsup-sd4-supply: Input supply for SD4.
13 vsup-sd5-supply: Input supply for SD5.
14 vin-ldo0-supply: Input supply for LDO0.
15 vin-ldo1-6-supply: Input supply for LDO1 and LDO6.
16 vin-ldo2-5-7-supply: Input supply for LDO2, LDO5 and LDO7.
17 vin-ldo3-4-supply: Input supply for LDO3 and LDO4.
18 vin-ldo9-10-supply: Input supply for LDO9 and LDO10.
19 vin-ldo11-supply: Input supply for LDO11.
20
21 Optional nodes:
22 --------------
23 - regulators : Must contain a sub-node per regulator from the list below.
24 Each sub-node should contain the constraints and initialization
25 information for that regulator. See regulator.txt for a
26 description of standard properties for these sub-nodes.
27 Additional custom properties are listed below.
28 sd[0-6], ldo[0-7], ldo[9-11].
29
30 Optional sub-node properties:
31 ----------------------------
32 ams,ext-control: External control of the rail. The option of
33 this properties will tell which external input is
34 controlling this rail. Valid values are 0, 1, 2 ad 3.
35 0: There is no external control of this rail.
36 1: Rail is controlled by ENABLE1 input pin.
37 2: Rail is controlled by ENABLE2 input pin.
38 3: Rail is controlled by ENABLE3 input pin.
39 ams,enable-tracking: Enable tracking with SD1, only supported
40 by LDO3.
41
42 Example:
43 -------
44 ams3722: ams3722 {
45 compatible = "ams,as3722";
46 reg = <0x40>;
47 ...
48
49 regulators {
50 vsup-sd2-supply = <...>;
51 ...
52
53 sd0 {
54 regulator-name = "vdd_cpu";
55 regulator-min-microvolt = <700000>;
56 regulator-max-microvolt = <1400000>;
57 regulator-always-on;
58 ams,ext-control = <2>;
59 };
60
61 sd1 {
62 regulator-name = "vdd_core";
63 regulator-min-microvolt = <700000>;
64 regulator-max-microvolt = <1400000>;
65 regulator-always-on;
66 ams,ext-control = <1>;
67 };
68
69 sd2 {
70 regulator-name = "vddio_ddr";
71 regulator-min-microvolt = <1350000>;
72 regulator-max-microvolt = <1350000>;
73 regulator-always-on;
74 };
75
76 sd4 {
77 regulator-name = "avdd-hdmi-pex";
78 regulator-min-microvolt = <1050000>;
79 regulator-max-microvolt = <1050000>;
80 regulator-always-on;
81 };
82
83 sd5 {
84 regulator-name = "vdd-1v8";
85 regulator-min-microvolt = <1800000>;
86 regulator-max-microvolt = <1800000>;
87 regulator-always-on;
88 };
89 ....
90 };
91 };
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