128 lines
3.8 KiB
Plaintext
128 lines
3.8 KiB
Plaintext
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* ISL9238 battery charger devicetree bindings
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Required properties:
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- compatible : "isil,isl9238"
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- reg: I2C slave address
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Required nodes:
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- regulators: There must a regulator subnode for the following purposes:
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Enabling voltage supply to vbus port(to enable otg mode)
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Optional properties:
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- isl,charge-current-limit-ma: to set the charging current limit in ma
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- isl,max-system-voltage-mv: to set the maximum charging voltage or
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system regulating voltage
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- isl,max-init-voltage-mv: to set the maximum init charging voltage or
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system default regulating voltage
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- isl,min-system-voltage-mv: to set the minimum system voltage
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- isl,input-voltage-limit-mv: to set input voltage limit
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- isl,adapter-current-limit1-ma: to se the adapter current limit 1
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- isl,adapter-current-limit2-ma: to se the adapter current limit 2
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- isl,acprochot-threshold: assertion threshold for adapter overcurrent
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condition.
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- isl,dcprochot-threshold: assertion threshold for adapter overcurrent
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condition.
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- isl,trickle-chg-current-ma: to configure trickle charging current
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- isl,current-sense-res: current_sense_reister(rs1, rs2) to configure
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charging current limit
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charging current depends on sense resister value
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- isl,adapter-sense-res: adapter_sense_reister(rs1, rs2) to configure
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adapter current limit
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adapter current depends on sense resister value
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- isl,otg-voltage-mv: to set OTG mode output regulation voltage
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- isl,otg-current-ma: to set OTG mode curret
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- isl,disable-regulation: disable input volatge regulation, by default
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input voltage regulation enabled
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- isl,enable-bat-learn-mode: enable battery learn mode, by default
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battery learn mode disabled
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- isl,disable-turbo-mode: disable turbo mode, by default
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turbo charging mode enabled
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- isl,enable-auto-charging: enable auto charging mode
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- isl,enable-battery-ovp: enables Battery OV (Overvoltage) fault protection
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by default battery ov fault disabled
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- isl,enable-trigger-acok: enables trigger PROCHOT# with ACOK
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by default acok trigger disabled
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- isl,enable-prochot-otg-current: enables trigger PROCHOT# with OTGCURRENT
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by default otgcurrent trigger disabled
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- isl,disable-smbus-timer: disable smbus timer(safety timer)
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by default smbus timer enabled
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smbus timer used to ensure the SMBus master
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is active and to prevent overcharging the battery.
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- isl,enable-psys-monitor: enables system power monitor PSYS function
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by default PSYS function is disabled
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- isl,thermal-zone: thermal zone name to get battery temperature
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- isl,temp-polling-time-sec: polling time to read battey temp and apply
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thermal profile
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-isl,terminate-chg-current: terminate chagring current, if battery current
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below terminate charging current then disable charging.
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- isl,temp-range: temperature range for thermal profile
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- isl,current-voltage-table: current and voltage table for thermal profile
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< 0C - No Charge
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0C to 9C - 1.17A to 13.2V
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10C to 19C - 1.95A to 13.2V
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20C to 49C - 3.90A to 12.75V; then 1.95A 12.75V to 13.2V
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50C to 59C - 1.95A to 12.3V
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> 60C - No Charge
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vbus regulator properties:
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================
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regulator-name: vbus regulator name.
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charger regulator properties:
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================
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regulator-name: charger regulator name.
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Example
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bc_isl9238: isl9238@9 {
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compatible = "isil,isl9238";
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reg = <0x09>;
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isl,charge-current-limit = <4096000>;
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isl,max-system-voltage = <8192000>;
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isl,min-system-voltage = <1024000>;
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isl,input-voltage-limit = <2730000>;
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isl,enable-auto-charging;
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isl,thermal-zone = "battery";
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isl,temp-polling-time-sec = <5>;
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isl,terminate-chg-current = <78000>;
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isl,temp-range = <0 10 20 50 60>;
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isl,current-voltage-table = <0 780 1170 3900 1950
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0 780 1170 1950 1950
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0 13200 13200 12550 12300>;
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vbus {
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regulator-name = "otg-vbus-reg";
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};
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charger {
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regulator-name = "charger-vbus-reg";
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};
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};
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