| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | MCP16502 PMIC |
| 2 | |
| 3 | Required properties: |
| 4 | - compatible: "microchip,mcp16502" |
| 5 | - reg: I2C slave address |
| 6 | - lpm-gpios: GPIO for LPM pin. Note that this GPIO *must* remain high during |
| 7 | suspend-to-ram, keeping the PMIC into HIBERNATE mode; this |
| 8 | property is optional; |
| 9 | - regulators: A node that houses a sub-node for each regulator within |
| 10 | the device. Each sub-node is identified using the node's |
| 11 | name. The content of each sub-node is defined by the |
| 12 | standard binding for regulators; see regulator.txt. |
| 13 | |
| 14 | Regulators of MCP16502 PMIC: |
| 15 | 1) VDD_IO - Buck (1.2 - 3.7 V) |
| 16 | 2) VDD_DDR - Buck (0.6 - 1.85 V) |
| 17 | 3) VDD_CORE - Buck (0.6 - 1.85 V) |
| 18 | 4) VDD_OTHER - BUCK (0.6 - 1.85 V) |
| 19 | 5) LDO1 - LDO (1.2 - 3.7 V) |
| 20 | 6) LDO2 - LDO (1.2 - 3.7 V) |
| 21 | |
| 22 | Regulator modes: |
| 23 | 2 - FPWM: higher precision, higher consumption |
| 24 | 4 - AutoPFM: lower precision, lower consumption |
| 25 | |
| 26 | Each regulator is defined using the standard binding for regulators. |
| 27 | |
| 28 | Example: |
| 29 | |
| 30 | mcp16502@5b { |
| 31 | compatible = "microchip,mcp16502"; |
| 32 | reg = <0x5b>; |
| 33 | status = "okay"; |
| 34 | lpm-gpios = <&pioBU 7 GPIO_ACTIVE_HIGH>; |
| 35 | |
| 36 | regulators { |
| 37 | VDD_IO { |
| 38 | regulator-name = "VDD_IO"; |
| 39 | regulator-min-microvolt = <1200000>; |
| 40 | regulator-max-microvolt = <3700000>; |
| 41 | regulator-initial-mode = <2>; |
| 42 | regulator-allowed-modes = <2>, <4>; |
| 43 | regulator-always-on; |
| 44 | |
| 45 | regulator-state-standby { |
| 46 | regulator-on-in-suspend; |
| 47 | regulator-mode = <4>; |
| 48 | }; |
| 49 | |
| 50 | regulator-state-mem { |
| 51 | regulator-off-in-suspend; |
| 52 | regulator-mode = <4>; |
| 53 | }; |
| 54 | }; |
| 55 | |
| 56 | VDD_DDR { |
| 57 | regulator-name = "VDD_DDR"; |
| 58 | regulator-min-microvolt = <600000>; |
| 59 | regulator-max-microvolt = <1850000>; |
| 60 | regulator-initial-mode = <2>; |
| 61 | regulator-allowed-modes = <2>, <4>; |
| 62 | regulator-always-on; |
| 63 | |
| 64 | regulator-state-standby { |
| 65 | regulator-on-in-suspend; |
| 66 | regulator-mode = <4>; |
| 67 | }; |
| 68 | |
| 69 | regulator-state-mem { |
| 70 | regulator-on-in-suspend; |
| 71 | regulator-mode = <4>; |
| 72 | }; |
| 73 | }; |
| 74 | |
| 75 | VDD_CORE { |
| 76 | regulator-name = "VDD_CORE"; |
| 77 | regulator-min-microvolt = <600000>; |
| 78 | regulator-max-microvolt = <1850000>; |
| 79 | regulator-initial-mode = <2>; |
| 80 | regulator-allowed-modes = <2>, <4>; |
| 81 | regulator-always-on; |
| 82 | |
| 83 | regulator-state-standby { |
| 84 | regulator-on-in-suspend; |
| 85 | regulator-mode = <4>; |
| 86 | }; |
| 87 | |
| 88 | regulator-state-mem { |
| 89 | regulator-off-in-suspend; |
| 90 | regulator-mode = <4>; |
| 91 | }; |
| 92 | }; |
| 93 | |
| 94 | VDD_OTHER { |
| 95 | regulator-name = "VDD_OTHER"; |
| 96 | regulator-min-microvolt = <600000>; |
| 97 | regulator-max-microvolt = <1850000>; |
| 98 | regulator-initial-mode = <2>; |
| 99 | regulator-allowed-modes = <2>, <4>; |
| 100 | regulator-always-on; |
| 101 | |
| 102 | regulator-state-standby { |
| 103 | regulator-on-in-suspend; |
| 104 | regulator-mode = <4>; |
| 105 | }; |
| 106 | |
| 107 | regulator-state-mem { |
| 108 | regulator-off-in-suspend; |
| 109 | regulator-mode = <4>; |
| 110 | }; |
| 111 | }; |
| 112 | |
| 113 | LDO1 { |
| 114 | regulator-name = "LDO1"; |
| 115 | regulator-min-microvolt = <1200000>; |
| 116 | regulator-max-microvolt = <3700000>; |
| 117 | regulator-always-on; |
| 118 | |
| 119 | regulator-state-standby { |
| 120 | regulator-on-in-suspend; |
| 121 | }; |
| 122 | |
| 123 | regulator-state-mem { |
| 124 | regulator-off-in-suspend; |
| 125 | }; |
| 126 | }; |
| 127 | |
| 128 | LDO2 { |
| 129 | regulator-name = "LDO2"; |
| 130 | regulator-min-microvolt = <1200000>; |
| 131 | regulator-max-microvolt = <3700000>; |
| 132 | regulator-always-on; |
| 133 | |
| 134 | regulator-state-standby { |
| 135 | regulator-on-in-suspend; |
| 136 | }; |
| 137 | |
| 138 | regulator-state-mem { |
| 139 | regulator-off-in-suspend; |
| 140 | }; |
| 141 | }; |
| 142 | |
| 143 | }; |
| 144 | }; |