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Qualcomm Switch-Mode Battery Charger and Boost
PROPERTIES
- compatible:
Usage: required
Value type: <stringlist>
Description: Must be one of:
- "qcom,pm8941-charger"
- reg:
Usage: required
Value type: <prop-encoded-array>
Description: Base address of registers for SMBB block
- interrupts:
Usage: required
Value type: <prop-encoded-array>
Description: The format of the specifier is defined by the binding document
describing the node's interrupt parent. Must contain one
specifier for each of the following interrupts, in order:
- charge done
- charge fast mode
- charge trickle mode
- battery temperature ok
- battery present
- charger disconnected
- USB-in valid
- DC-in valid
- interrupt-names:
Usage: required
Value type: <stringlist>
Description: Must contain the following list, strictly ordered:
"chg-done",
"chg-fast",
"chg-trkl",
"bat-temp-ok",
"bat-present",
"chg-gone",
"usb-valid",
"dc-valid"
- qcom,fast-charge-current-limit:
Usage: optional (default: 1A, or pre-configured value)
Value type: <u32>; uA; range [100mA : 3A]
Description: Maximum charge current; May be clamped to safety limits.
- qcom,fast-charge-low-threshold-voltage:
Usage: optional (default: 3.2V, or pre-configured value)
Value type: <u32>; uV; range [2.1V : 3.6V]
Description: Battery voltage limit above which fast charging may operate;
Below this value linear or switch-mode auto-trickle-charging
will operate.
- qcom,fast-charge-high-threshold-voltage:
Usage: optional (default: 4.2V, or pre-configured value)
Value type: <u32>; uV; range [3.24V : 5V]
Description: Battery voltage limit below which fast charging may operate;
The fast charger will attempt to charge the battery to this
voltage. May be clamped to safety limits.
- qcom,fast-charge-safe-voltage:
Usage: optional (default: 4.2V, or pre-configured value)
Value type: <u32>; uV; range [3.24V : 5V]
Description: Maximum safe battery voltage; May be pre-set by bootloader, in
which case, setting this will harmlessly fail. The property
'fast-charge-high-watermark' will be clamped by this value.
- qcom,fast-charge-safe-current:
Usage: optional (default: 1A, or pre-configured value)
Value type: <u32>; uA; range [100mA : 3A]
Description: Maximum safe battery charge current; May pre-set by bootloader,
in which case, setting this will harmlessly fail. The property
'qcom,fast-charge-current-limit' will be clamped by this value.
- qcom,auto-recharge-threshold-voltage:
Usage: optional (default: 4.1V, or pre-configured value)
Value type: <u32>; uV; range [3.24V : 5V]
Description: Battery voltage limit below which auto-recharge functionality
will restart charging after end-of-charge; The high cutoff
limit for auto-recharge is 5% above this value.
- qcom,minimum-input-voltage:
Usage: optional (default: 4.3V, or pre-configured value)
Value type: <u32>; uV; range [4.2V : 9.6V]
Description: Input voltage level above which charging may operate
- qcom,dc-current-limit:
Usage: optional (default: 100mA, or pre-configured value)
Value type: <u32>; uA; range [100mA : 2.5A]
Description: Default DC charge current limit
- qcom,disable-dc:
Usage: optional (default: false)
Value type: boolean: <u32> or <empty>
Description: Disable DC charger
- qcom,jeita-extended-temp-range:
Usage: optional (default: false)
Value type: boolean: <u32> or <empty>
Description: Enable JEITA extended temperature range; This does *not*
adjust the maximum charge voltage or current in the extended
temperature range. It only allows charging when the battery
is in the extended temperature range. Voltage/current
regulation must be done externally to fully comply with
the JEITA safety guidelines if this flag is set.
EXAMPLE
charger@1000 {
compatible = "qcom,pm8941-charger";
reg = <0x1000 0x700>;
interrupts = <0x0 0x10 7 IRQ_TYPE_EDGE_BOTH>,
<0x0 0x10 5 IRQ_TYPE_EDGE_BOTH>,
<0x0 0x10 4 IRQ_TYPE_EDGE_BOTH>,
<0x0 0x12 1 IRQ_TYPE_EDGE_BOTH>,
<0x0 0x12 0 IRQ_TYPE_EDGE_BOTH>,
<0x0 0x13 2 IRQ_TYPE_EDGE_BOTH>,
<0x0 0x13 1 IRQ_TYPE_EDGE_BOTH>,
<0x0 0x14 1 IRQ_TYPE_EDGE_BOTH>;
interrupt-names = "chg-done",
"chg-fast",
"chg-trkl",
"bat-temp-ok",
"bat-present",
"chg-gone",
"usb-valid",
"dc-valid";
qcom,fast-charge-current-limit = <1000000>;
qcom,dc-charge-current-limit = <1000000>;
};
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