| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame^] | 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 | }; |