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