| Summit smb1351 battery charger |
| |
| SMB1351 is a single-cell battery charger. It can charge |
| the battery and power the system via the USB/AC adapter input. |
| |
| The smb1351 interface is via I2C bus. |
| |
| Required Properties: |
| - compatible Must be "qcom,smb1351-charger". |
| - reg The device 7-bit I2C address. |
| |
| Required Properties for standalone charger: |
| - regulator-name A string used as a descriptive name for OTG regulator. |
| - pinctrl-names The state name of the pin configuration. Only |
| support "default". |
| - pinctrl-0 The phandle of the pin configuration node in |
| pinctrl for smb_int_pin. |
| |
| Optional Properties: |
| |
| - interrupts This indicates the IRQ number of the GPIO |
| connected to the STAT pin. |
| - qcom,fastchg-current-max-ma Fast Charging current in mA. Supported range is |
| from 1000mA to 4500mA. |
| - qcom,chg-autonomous-mode This is a bool property and it indicates that the |
| charger is configured for autonomous operation and |
| does not require any software configuration. |
| - qcom,disable-apsd This is a bool property which disables automatic |
| power source detection (APSD). If this is set |
| charger detection is done by DCIN UV irq. |
| - qcom,charging-disabled This is a bool property which disables charging. |
| - qcom,using-pmic-therm This property indicates thermal pin connected to pmic or smb. |
| - qcom,bms-psy-name This is a string and it points to the bms |
| power supply name. |
| - qcom,iterm-ma Specifies the termination current to indicate end-of-charge. |
| Possible values in mA - 70, 100, 200, 300, 400, 500, 600, 700. |
| - qcom,iterm-disabled Disables the termination current feature. This is a bool |
| property. |
| - qcom,float-voltage-mv Float Voltage in mV - the maximum voltage up to which |
| the battery is charged. Supported range 3500mV to 4500mV |
| - qcom,recharge-mv Recharge threshold in mV - the offset from the float-volatge |
| as which the charger restarts charging. Possible |
| values are 50mV and 100mV. |
| - qcom,recharge-disabled Boolean value which disables the auto-recharge. |
| - qcom,bms-controlled-charging This property enables BMS to control EOC and |
| recharge. BMS and charger communicates with each |
| other via power_supply framework. This |
| property should be used with 'qcom,iterm-disabled' |
| to ensure EOC detection in charger is disabled. |
| - qcom,force-hvdcp-2p0 Boolean value which allows to force hvdcp working on 2.0 mode. |
| - qcom,parallel-charger Boolean value which enables the parallel charger. |
| - qcom,chg-vadc Corresponding VADC device's phandle. |
| - qcom,chg-adc_tm phandle to the corresponding VADC device to read the ADC channels. |
| - qcom,batt-cold-decidegc Cold battery temperature in decidegC. |
| - qcom,batt-hot-decidegc Hot battery temperature in decidegC. |
| - qcom,batt-missing-decidegc This is a property indicating battery missing temperature, if |
| higher than it, battery should exist. |
| - qcom,batt-warm-decidegc: Warm battery temperature in decidegC. After hitting this threshold, |
| "qcom,warm-bat-ma" defines maximum charging current and |
| "qcom,warm-bat-mv" defines maximum target voltage. |
| - qcom,batt-cool-decidegc: Cool battery temperature in decidegC. After hitting this threshold, |
| "qcom,cool-bat-ma" defines maximum charging current and |
| "qcom,cool-bat-mv" defines maximum target voltage. |
| - qcom,batt-warm-ma: Maximum warm battery charge current in milli-amps. |
| - qcom,batt-cool-ma: Maximum cool battery charge current in milli-amps. |
| - qcom,batt-warm-mv: Maximum warm battery target voltage in milli-volts. |
| - qcom,batt-cool-mv: Maximum cool battery target voltage in milli-volts. |
| - qcom,parallel-en-pin-polarity Specify the polarity of enable signal controlled |
| via pin in a parallel-charger configuration. |
| 0 - Active low and 1 - Active high. |
| If not specified the default value is active-low. |
| - qcom,parallel-external-current-sense If present specifies external rsense is |
| used for charge current sensing. |
| |
| Example for standalone charger: |
| |
| &i2c_4 { |
| smb1351_otg_supply: smb1351-charger@57 { |
| compatible = "qcom,smb1351-charger"; |
| reg = <0x57>; |
| interrupt-parent = <&msm_gpio>; |
| interrupts = <62 2>; |
| pinctrl-names = "default"; |
| pinctrl-0 = <&smb_int_default>; |
| qcom,float-voltage-mv = <4350>; |
| qcom,iterm-ma = <100>; |
| qcom,recharge-mv = <100>; |
| qcom,bms-psy-name = "bms"; |
| regulator-name = "smb1351_otg_vreg"; |
| qcom,using-pmic-therm; |
| qcom,chg-adc_tm = <&pm8916_adc_tm>; |
| qcom,chg-vadc = <&pm8916_vadc>; |
| qcom,batt-hot-decidegc = <550>; |
| qcom,batt-cold-decidegc = <0>; |
| qcom,batt-missing-decidegc = <(-200)>; |
| qcom,batt-warm-decidegc = <500>; |
| qcom,batt-cool-decidegc = <50>; |
| qcom,batt-warm-ma = <350>; |
| qcom,batt-cool-ma = <350>; |
| qcom,batt-warm-mv = <4200>; |
| qcom,batt-cool-mv = <4200>; |
| }; |
| }; |
| |
| Example for parallel charger: |
| |
| &i2c_11 { |
| smb1351-charger@1d { |
| compatible = "qcom,smb1351-charger"; |
| reg = <0x1d>; |
| qcom,parallel-charger; |
| qcom,float-voltage-mv = <4400>; |
| qcom,recharge-mv = <100>; |
| }; |
| }; |