151 lines
5.7 KiB
Plaintext
151 lines
5.7 KiB
Plaintext
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Qualcomm Switch-Mode Battery Charger and Boost
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PROPERTIES
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- compatible:
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Usage: required
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Value type: <stringlist>
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Description: Must be one of:
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- "qcom,pm8941-charger"
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- reg:
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Usage: required
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Value type: <prop-encoded-array>
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Description: Base address of registers for SMBB block
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- interrupts:
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Usage: required
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Value type: <prop-encoded-array>
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Description: The format of the specifier is defined by the binding document
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describing the node's interrupt parent. Must contain one
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specifier for each of the following interrupts, in order:
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- charge done
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- charge fast mode
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- charge trickle mode
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- battery temperature ok
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- battery present
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- charger disconnected
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- USB-in valid
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- DC-in valid
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- interrupt-names:
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Usage: required
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Value type: <stringlist>
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Description: Must contain the following list, strictly ordered:
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"chg-done",
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"chg-fast",
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"chg-trkl",
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"bat-temp-ok",
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"bat-present",
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"chg-gone",
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"usb-valid",
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"dc-valid"
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- qcom,fast-charge-current-limit:
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Usage: optional (default: 1A, or pre-configured value)
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Value type: <u32>; uA; range [100mA : 3A]
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Description: Maximum charge current; May be clamped to safety limits.
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- qcom,fast-charge-low-threshold-voltage:
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Usage: optional (default: 3.2V, or pre-configured value)
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Value type: <u32>; uV; range [2.1V : 3.6V]
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Description: Battery voltage limit above which fast charging may operate;
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Below this value linear or switch-mode auto-trickle-charging
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will operate.
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- qcom,fast-charge-high-threshold-voltage:
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Usage: optional (default: 4.2V, or pre-configured value)
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Value type: <u32>; uV; range [3.24V : 5V]
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Description: Battery voltage limit below which fast charging may operate;
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The fast charger will attempt to charge the battery to this
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voltage. May be clamped to safety limits.
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- qcom,fast-charge-safe-voltage:
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Usage: optional (default: 4.2V, or pre-configured value)
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Value type: <u32>; uV; range [3.24V : 5V]
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Description: Maximum safe battery voltage; May be pre-set by bootloader, in
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which case, setting this will harmlessly fail. The property
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'fast-charge-high-watermark' will be clamped by this value.
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- qcom,fast-charge-safe-current:
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Usage: optional (default: 1A, or pre-configured value)
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Value type: <u32>; uA; range [100mA : 3A]
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Description: Maximum safe battery charge current; May pre-set by bootloader,
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in which case, setting this will harmlessly fail. The property
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'qcom,fast-charge-current-limit' will be clamped by this value.
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- qcom,auto-recharge-threshold-voltage:
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Usage: optional (default: 4.1V, or pre-configured value)
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Value type: <u32>; uV; range [3.24V : 5V]
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Description: Battery voltage limit below which auto-recharge functionality
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will restart charging after end-of-charge; The high cutoff
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limit for auto-recharge is 5% above this value.
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- qcom,minimum-input-voltage:
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Usage: optional (default: 4.3V, or pre-configured value)
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Value type: <u32>; uV; range [4.2V : 9.6V]
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Description: Input voltage level above which charging may operate
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- qcom,dc-current-limit:
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Usage: optional (default: 100mA, or pre-configured value)
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Value type: <u32>; uA; range [100mA : 2.5A]
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Description: Default DC charge current limit
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- qcom,disable-dc:
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Usage: optional (default: false)
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Value type: boolean: <u32> or <empty>
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Description: Disable DC charger
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- qcom,jeita-extended-temp-range:
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Usage: optional (default: false)
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Value type: boolean: <u32> or <empty>
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Description: Enable JEITA extended temperature range; This does *not*
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adjust the maximum charge voltage or current in the extended
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temperature range. It only allows charging when the battery
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is in the extended temperature range. Voltage/current
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regulation must be done externally to fully comply with
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the JEITA safety guidelines if this flag is set.
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- usb_otg_in-supply:
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Usage: optional
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Value type: <phandle>
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Description: Reference to the regulator supplying power to the USB_OTG_IN
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pin.
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child nodes:
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- otg-vbus:
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Usage: optional
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Description: This node defines a regulator used to control the direction
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of VBUS voltage - specifically: whether to supply voltage
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to VBUS for host mode operation of the OTG port, or allow
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input voltage from external VBUS for charging. In the
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hardware, the supply for this regulator comes from
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usb_otg_in-supply.
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EXAMPLE
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charger@1000 {
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compatible = "qcom,pm8941-charger";
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reg = <0x1000 0x700>;
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interrupts = <0x0 0x10 7 IRQ_TYPE_EDGE_BOTH>,
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<0x0 0x10 5 IRQ_TYPE_EDGE_BOTH>,
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<0x0 0x10 4 IRQ_TYPE_EDGE_BOTH>,
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<0x0 0x12 1 IRQ_TYPE_EDGE_BOTH>,
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<0x0 0x12 0 IRQ_TYPE_EDGE_BOTH>,
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<0x0 0x13 2 IRQ_TYPE_EDGE_BOTH>,
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<0x0 0x13 1 IRQ_TYPE_EDGE_BOTH>,
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<0x0 0x14 1 IRQ_TYPE_EDGE_BOTH>;
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interrupt-names = "chg-done",
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"chg-fast",
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"chg-trkl",
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"bat-temp-ok",
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"bat-present",
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"chg-gone",
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"usb-valid",
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"dc-valid";
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qcom,fast-charge-current-limit = <1000000>;
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qcom,dc-charge-current-limit = <1000000>;
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usb_otg_in-supply = <&pm8941_5vs1>;
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otg-vbus {};
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};
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