From: ChiaEn Wu <chiaen_wu@xxxxxxxxxxx> Add MediaTek MT6370 Charger binding documentation. Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx> Signed-off-by: ChiaEn Wu <chiaen_wu@xxxxxxxxxxx> --- v11 - Add more detailed description of irqs. - Adujust the order of irqs --- .../power/supply/mediatek,mt6370-charger.yaml | 96 ++++++++++++++++++++++ 1 file changed, 96 insertions(+) create mode 100644 Documentation/devicetree/bindings/power/supply/mediatek,mt6370-charger.yaml diff --git a/Documentation/devicetree/bindings/power/supply/mediatek,mt6370-charger.yaml b/Documentation/devicetree/bindings/power/supply/mediatek,mt6370-charger.yaml new file mode 100644 index 0000000..fd491c5 --- /dev/null +++ b/Documentation/devicetree/bindings/power/supply/mediatek,mt6370-charger.yaml @@ -0,0 +1,96 @@ +# 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@xxxxxxxxxxx> + +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 + +... -- 2.7.4
