125 lines
3.5 KiB
YAML
125 lines
3.5 KiB
YAML
Qualcomm Technologies, Inc. Battery Gauge (QBG) binding
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description: |
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Qualcomm Technologies, Inc. Battery Gauge (QBG) uses the periodic samples of
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battery voltage and current to determine the battery state-of-charge (SOC)
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and supports other battery management features.
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properties:
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compatible:
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const: qcom,qbg
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reg:
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description: Base address of QBG MAIN peripheral.
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maxItems: 1
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interrupts:
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description: Specifies the interrupts for nvmem devices used by QBG.
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maxItems: 1
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interrupt-names:
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description: Specifies the interrupt names for nvmem devices used by QBG.
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minItems: 1
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items:
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- const: qbg-sdam
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$ref: /schemas/types.yaml#/definitions/string-array
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qcom,num-data-sdams:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: Number of SDAMs used for storing QBG FIFO data.
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qcom,sdam-base:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: Base address of QBG SDAM peripheral.
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qcom,vbat-cutoff-mv:
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allOf:
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- $ref: "/schemas/types.yaml#/definitions/uint32"
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description: The battery voltage threshold (in mV) at which the battery
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power cuts off. The SOC is forced to 0 when battery voltage reaches
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this value.
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default: 3100
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qcom,ibat-cutoff-ma:
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allOf:
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- $ref: /schemas/types.yaml#/definitions/uint32
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description: The battery current threshold (in mA) at which the battery
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power cuts off. The SOC is forced to 0 when battery current reaches
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this value.
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default: 150
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qcom,vph-min-mv:
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allOf:
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- $ref: /schemas/types.yaml#/definitions/uint32
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description: Minimum sustainable system power (in mV).
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default: 2700
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qcom,iterm-ma:
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allOf:
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- $ref: /schemas/types.yaml#/definitions/uint32
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description: The battery current (in mA) at which the QBG algorithm
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converges the SOC to 100% during charging and can be used to terminate
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charging.
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default: 100
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qcom,rconn-mohm:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: Resistance of the battery connector in mOhms.
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qcom,qbg-vbatt-empty-threshold-mv:
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$ref: /schemas/types.yaml#/definitions/uint32
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description: Vbatt empty threshold in mv at which QBG generates low Vbatt
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interrupt.
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nvmem-cell-names:
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minItems: 2
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maxItems: 3
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items:
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- const: qbg_debug_mask_low
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- const: qbg_debug_mask_high
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- const: skip_esr_state
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nvmem-cells:
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minItems: 2
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minItems: 3
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description: |
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Use nvmem cell device to indicate SDAM register.
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qbg_debug_mask_low/qbg_debug_mask_high used to store the qbg debug mask
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skip_esr_state used to get GPS de-modulating status
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required:
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- compatible
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- reg
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- interrupt-names
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- interrupts
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- qcom,num-data-sdams
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- qcom,sdam-base
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examples:
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- |
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#include <dt-bindings/interrupt-controller/irq.h>
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spmi_bus {
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#address-cells = <2>;
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#size-cells = <0>;
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interrupt-controller;
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#interrupt-cells = <4>;
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qcom,pm5100@0 {
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#address-cells = <1>;
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#size-cells = <0>;
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qbg@4f00 {
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compatible = "qcom,qbg";
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reg = <0x4f00>;
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#address-cells = <1>;
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#size-cells = <1>;
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interrupt-names = "qbg-sdam";
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interrupts = <0x0 0x76 0x1 IRQ_TYPE_EDGE_RISING>;
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qcom,num-data-sdams = <6>;
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qcom,sdam-base = <0x7600>;
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nvmem-cell-names = "qbg_debug_mask_low", "qbg_debug_mask_high";
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nvmem-cells = <&qbg_debug_mask_low>, <&qbg_debug_mask_high>;
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};
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};
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};
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...
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