| # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| %YAML 1.2 |
| --- |
| $id: http://devicetree.org/schemas/power/supply/mediatek,mt6370-charger.yaml# |
| $schema: http://devicetree.org/meta-schemas/core.yaml# |
| |
| title: MediaTek MT6370 Battery Charger |
| |
| maintainers: |
| - ChiaEn Wu <chiaen_wu@richtek.com> |
| |
| description: | |
| This module is part of the MT6370 MFD device. |
| Provides Battery Charger, Boost for OTG devices and BC1.2 detection. |
| |
| properties: |
| compatible: |
| const: mediatek,mt6370-charger |
| |
| interrupts: |
| description: | |
| Specify what irqs are needed to be handled by MT6370 Charger driver. |
| We need to use the IRQ "MT6370_IRQ_OVPCTRL_UVP_D" to know when USB |
| is plugged in, and then the driver will enable BC1.2 detection. |
| After the hardware of MT6370 completes the BC1.2 detection, |
| IRQ "MT6370_IRQ_ATTACH" will be triggered, and the driver will know |
| the result of BC1.2 detection. |
| When the IRQ "MT6370_IRQ_CHG_MIVR" is triggered, it means that the |
| hardware enters the "Minimum Input Voltage Regulation loop" and |
| a workaround needs to be applied at this time. |
| In summary, "MT6370_IRQ_OVPCTRL_UVP_D", "MT6370_IRQ_ATTACH" and |
| "MT6370_IRQ_CHG_MIVR" are required in this charger driver. |
| items: |
| - description: irq of "USB is plugged in" |
| - description: irq of "BC1.2 is done" |
| - description: irq of "Minimum Input Voltage Regulation loop is active" |
| |
| interrupt-names: |
| items: |
| - const: uvp_d_evt |
| - const: attach_i |
| - const: mivr |
| |
| io-channels: |
| description: | |
| Use ADC channel to read VBUS, IBUS, IBAT, etc., info. |
| minItems: 1 |
| items: |
| - description: | |
| VBUS voltage with lower accuracy (+-75mV) but higher measure |
| range (1~22V) |
| - description: | |
| VBUS voltage with higher accuracy (+-30mV) but lower measure |
| range (1~9.76V) |
| - description: the main system input voltage |
| - description: battery voltage |
| - description: battery temperature-sense input voltage |
| - description: IBUS current (required) |
| - description: battery current |
| - description: | |
| regulated output voltage to supply for the PWM low-side gate driver |
| and the bootstrap capacitor |
| - description: IC junction temperature |
| |
| io-channel-names: |
| minItems: 1 |
| items: |
| - const: vbusdiv5 |
| - const: vbusdiv2 |
| - const: vsys |
| - const: vbat |
| - const: ts_bat |
| - const: ibus |
| - const: ibat |
| - const: chg_vddp |
| - const: temp_jc |
| |
| usb-otg-vbus-regulator: |
| type: object |
| description: OTG boost regulator. |
| unevaluatedProperties: false |
| $ref: /schemas/regulator/regulator.yaml# |
| |
| properties: |
| enable-gpios: |
| maxItems: 1 |
| |
| required: |
| - compatible |
| - interrupts |
| - interrupt-names |
| - io-channels |
| |
| additionalProperties: false |
| |
| ... |
