| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame^] | 1 | # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/power/supply/mediatek,mt6370-charger.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: MediaTek MT6370 Battery Charger |
| 8 | |
| 9 | maintainers: |
| 10 | - ChiaEn Wu <chiaen_wu@richtek.com> |
| 11 | |
| 12 | description: | |
| 13 | This module is part of the MT6370 MFD device. |
| 14 | Provides Battery Charger, Boost for OTG devices and BC1.2 detection. |
| 15 | |
| 16 | properties: |
| 17 | compatible: |
| 18 | const: mediatek,mt6370-charger |
| 19 | |
| 20 | interrupts: |
| 21 | description: | |
| 22 | Specify what irqs are needed to be handled by MT6370 Charger driver. |
| 23 | We need to use the IRQ "MT6370_IRQ_OVPCTRL_UVP_D" to know when USB |
| 24 | is plugged in, and then the driver will enable BC1.2 detection. |
| 25 | After the hardware of MT6370 completes the BC1.2 detection, |
| 26 | IRQ "MT6370_IRQ_ATTACH" will be triggered, and the driver will know |
| 27 | the result of BC1.2 detection. |
| 28 | When the IRQ "MT6370_IRQ_CHG_MIVR" is triggered, it means that the |
| 29 | hardware enters the "Minimum Input Voltage Regulation loop" and |
| 30 | a workaround needs to be applied at this time. |
| 31 | In summary, "MT6370_IRQ_OVPCTRL_UVP_D", "MT6370_IRQ_ATTACH" and |
| 32 | "MT6370_IRQ_CHG_MIVR" are required in this charger driver. |
| 33 | items: |
| 34 | - description: irq of "USB is plugged in" |
| 35 | - description: irq of "BC1.2 is done" |
| 36 | - description: irq of "Minimum Input Voltage Regulation loop is active" |
| 37 | |
| 38 | interrupt-names: |
| 39 | items: |
| 40 | - const: uvp_d_evt |
| 41 | - const: attach_i |
| 42 | - const: mivr |
| 43 | |
| 44 | io-channels: |
| 45 | description: | |
| 46 | Use ADC channel to read VBUS, IBUS, IBAT, etc., info. |
| 47 | minItems: 1 |
| 48 | items: |
| 49 | - description: | |
| 50 | VBUS voltage with lower accuracy (+-75mV) but higher measure |
| 51 | range (1~22V) |
| 52 | - description: | |
| 53 | VBUS voltage with higher accuracy (+-30mV) but lower measure |
| 54 | range (1~9.76V) |
| 55 | - description: the main system input voltage |
| 56 | - description: battery voltage |
| 57 | - description: battery temperature-sense input voltage |
| 58 | - description: IBUS current (required) |
| 59 | - description: battery current |
| 60 | - description: | |
| 61 | regulated output voltage to supply for the PWM low-side gate driver |
| 62 | and the bootstrap capacitor |
| 63 | - description: IC junction temperature |
| 64 | |
| 65 | io-channel-names: |
| 66 | minItems: 1 |
| 67 | items: |
| 68 | - const: vbusdiv5 |
| 69 | - const: vbusdiv2 |
| 70 | - const: vsys |
| 71 | - const: vbat |
| 72 | - const: ts_bat |
| 73 | - const: ibus |
| 74 | - const: ibat |
| 75 | - const: chg_vddp |
| 76 | - const: temp_jc |
| 77 | |
| 78 | usb-otg-vbus-regulator: |
| 79 | type: object |
| 80 | description: OTG boost regulator. |
| 81 | unevaluatedProperties: false |
| 82 | $ref: /schemas/regulator/regulator.yaml# |
| 83 | |
| 84 | properties: |
| 85 | enable-gpios: |
| 86 | maxItems: 1 |
| 87 | |
| 88 | required: |
| 89 | - compatible |
| 90 | - interrupts |
| 91 | - interrupt-names |
| 92 | - io-channels |
| 93 | |
| 94 | additionalProperties: false |
| 95 | |
| 96 | ... |