108 lines
5.0 KiB
Plaintext
108 lines
5.0 KiB
Plaintext
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Summit smb358 battery charger
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SMB358 is a single-cell battery charger. It can charge
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the battery and power the system via the USB/AC adapter input.
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The smb358 interface is via I2C bus.
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Required Properties:
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- compatible Must be "qcom,smb358-charger".
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- reg The device 7-bit I2C address.
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- interrupt-parent parent of interrupt.
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- interrupts This indicates the IRQ number of the GPIO
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connected to the STAT pin.
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- qcom,irq-gpio GPIO which receives interrupts from STAT output.
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- qcom,bms-psy-name This is a string and it points to the bms
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power supply name.
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- qcom,float-voltage-mv Float Voltage in mV - the maximum voltage up to which
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the battery is charged. Supported range 3500mV to 4500mV
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Optional Properties:
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- qcom,fastchg-current-max-ma Fast Charging current in mA. Supported range is
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from 200mA to 2000mA.
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- qcom,chg-valid-gpio GPIO which indicates the charger presence.
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This GPIO is connected to the SYSOK pin.
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- qcom,chg-autonomous-mode This is a bool property and it indicates that the
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charger is configured for autonomous operation and
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does not require any software configuration.
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- qcom,disable-apsd This is a bool property which disables automatic
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power source detection (APSD). If this is set
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charger detection is done by DCIN UV irq.
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- qcom,charger-disabled This is a bool property which disables charging.
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- qcom,using-pmic-therm This property indicates thermal pin connected to pmic or smb.
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- qcom,vcc-i2c-supply Power source required to power up i2c bus.
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- qcom,bms-controlled-charging This property indicates integrating with VMBMS, charger
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driver and BMS communicates with each other via power_supply
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framework. Property "qcom,iterm-disabled" also needs defined
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if using this feature to make sure that the charger doesn't
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terminate charging on its own.
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- qcom,iterm-ma Specifies the termination current to indicate end-of-charge.
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Possible values in mA - 30, 40, 60, 80, 100, 125, 150, 200.
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- qcom,iterm-disabled Disables the termination current feature. This is a bool
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property.
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- qcom,recharge-mv Recharge threshold in mV - the offset from the float-volatge
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as which the charger restarts charging. Possible
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values are 50mV to 300mV.
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- qcom,recharge-disabled Boolean value which disables the auto-recharge.
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- qcom,chg-inhibit-disabled This is a bool property which disables charger inhibit.
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Charger inhibit option prevents battery charging upon insertion
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of the charger when battery voltage is above the programmed inhibit
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threshold.
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- qcom,chg-adc_tm phandle to the corresponding VADC device to read the ADC channels.
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- qcom,cold-bat-decidegc Cold battery temperature in decidegC.
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- qcom,hot-bat-decidegc Hot battery temperature in decidegC.
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- qcom,bat-present-decidegc This is a property indicating battery present temperature, if
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higher than it, battery should exist. Default value is negative,
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if this property is 200, it stands for -200 decidegC.
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- qcom,warm-bat-decidegc: Warm battery temperature in decidegC. After hitting this threshold,
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"qcom,warm-bat-ma" defines maximum charging current and
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"qcom,warm-bat-mv" defines maximum target voltage.
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- qcom,cool-bat-decidegc: Cool battery temperature in decidegC. After hitting this threshold,
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"qcom,cool-bat-ma" defines maximum charging current and
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"qcom,cool-bat-mv" defines maximum target voltage.
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- qcom,warm-bat-ma: Maximum warm battery charge current in milli-amps.
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- qcom,cool-bat-ma: Maximum cool battery charge current in milli-amps.
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- qcom,warm-bat-mv: Maximum warm battery target voltage in milli-volts.
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- qcom,cool-bat-mv: Maximum cool battery target voltage in milli-volts.
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- qcom,chg-vadc Corresponding VADC device's phandle.
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- qcom,skip-usb-suspend-for-fake-battery: A boolean property to skip suspending USB path for fake
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battery. If this property is not present then 'qcom,batt-id-vref-uv' and
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'qcom,batt-id-rpullup-kohm' should be present.
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- qcom,batt-id-vref-uv The reference voltage on the battery-ID line
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specified in micro-volts.
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- qcom,batt-id-rpullup-kohm The pull-up resistor connected on the battery-ID
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(vref) line.
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- qcom,using-vbat-sns Bool property to indicate that VBAT sense can be
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done by PMIC.
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Example:
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i2c@f9967000 {
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smb358-charger@1b {
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compatible = "qcom,smb358-charger";
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reg = <0x1b>;
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interrupt-parent = <&msmgpio>;
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interrupts = <17 0x0>;
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qcom,irq-gpio = <&msmgpio 17 0x00>;
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qcom,vcc-i2c-supply = <&pm8226_lvs1>;
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qcom,float-voltage-mv = <4350>;
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qcom,disable-apsd;
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qcom,chg-inhibit-disabled;
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qcom,bms-controlled-charging;
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qcom,fastchg-current-max-ma = <1500>;
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qcom,bms-psy-name = "bms";
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qcom,chg-vadc = <&pm8226_vadc>;
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qcom,chg-adc_tm = <&pm8226_adc_tm>;
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qcom,hot-bat-decidegc = <500>;
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qcom,cold-bat-decidegc = <0>;
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qcom,bat-present-decidegc = <200>;
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qcom,warm-bat-decidegc = <450>;
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qcom,cool-bat-decidegc = <100>;
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qcom,warm-bat-ma = <350>;
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qcom,cool-bat-ma = <350>;
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qcom,warm-bat-mv = <4200>;
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qcom,cool-bat-mv = <4200>;
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};
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};
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