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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.
-
-- usb_otg_in-supply:
- Usage: optional
- Value type: <phandle>
- Description: Reference to the regulator supplying power to the USB_OTG_IN
- pin.
-
-child nodes:
-- otg-vbus:
- Usage: optional
- Description: This node defines a regulator used to control the direction
- of VBUS voltage - specifically: whether to supply voltage
- to VBUS for host mode operation of the OTG port, or allow
- input voltage from external VBUS for charging. In the
- hardware, the supply for this regulator comes from
- usb_otg_in-supply.
-
-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>;
- usb_otg_in-supply = <&pm8941_5vs1>;
-
- otg-vbus {};
-};