Commit | Line | Data |
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bc407334 LD |
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 | }; |