119 lines
3.5 KiB
Text
119 lines
3.5 KiB
Text
Qualcomm Technologies, Inc. SMB1390 Charger Specific Bindings
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SMB1390 charge pump is paired with QTI family of standalone chargers to
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enable a high current, high efficiency Li+ battery charging system.
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=======================
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Required Node Structure
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=======================
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SMB1390 Charger must be described in two levels of device nodes.
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==================================
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First Level Node - SMB1390 Charger
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==================================
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Charger specific properties:
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- compatible
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Usage: required
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Value type: <string>
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Definition: "qcom,smb1390-charger-psy" for master SMB1390 and
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"qcom,smb1390-slave" for slave SMB1390.
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- qcom,pmic-revid
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Usage: required
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Value type: phandle
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Definition: Should specify the phandle of SMB's revid module. This is used
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to identify the SMB subtype.
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- io-channels
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- io-channel-names
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Usage: required
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Value type: <phandle>
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Definition: For details about IIO bindings see:
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Documentation/devicetree/bindings/iio/iio-bindings.txt
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- qcom,min-ilim-ua
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Usage: optional
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Value type: <u32>
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Definition: Minimum ILIM supported, if requested ILIM goes below this value
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disable SMB1390. If this values is not specified default minimum
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ILIM is 1A.
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- qcom,max-temp-alarm-degc
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Usage: optional
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Value type: <u32>
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Definition: Maximum die temperature to trigger temp alarm. The value
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must be one of the following:
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80, 90, 105, 115.
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If this value is not specified or is not one of the above
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then default value is 105.
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- qcom,max-cutoff-soc
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Usage: optional
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Value type: <u32>
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Definition: SOC beyond which SMB1390 is kept disabled.
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If this value is not specified then default value is 85%.
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- qcom,parallel-output-mode
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Usage: optional
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Value type: <u32>
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Definition: Defines the SMB1390 output connection topology.
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This should be one of the following:
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0 - If SMB1390 output is not connected to anything;
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1 - If SMB1390 output is connected to VPH_PWR;
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2 - If SMB1390 output is connected to VBATT.
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If this value is not specified then default value is 1.
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- qcom,parallel-input-mode
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Usage: optional
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Value type: <u32>
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Definition: Defines the SMB1390 input connection topology.
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This should be one of the following:
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0 - If SMB1390 input is not connected to anything;
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1 - If SMB1390 input is connected to USBIN;
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3 - If SMB1390 input is connected to USBMID.
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If this value is not specified then default value is 3.
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================================================
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Second Level Nodes - SMB1390 Charger Peripherals
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================================================
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Peripheral specific properties:
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- interrupts
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Usage: required
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Value type: <prop-encoded-array>
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Definition: Peripheral interrupt specifier.
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- interrupt-names
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Usage: required
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Value type: <stringlist>
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Definition: Interrupt names. This list must match up 1-to-1 with the
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interrupts specified in the 'interrupts' property.
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=======
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Example
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=======
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smb1390_charger: qcom,charge_pump {
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compatible = "qcom,smb1390-charger-psy";
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qcom,pmic-revid = <&smb1390_revid>;
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interrupt-parent = <&smb1390>;
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status = "disabled";
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io-channels = <&pm8150b_vadc ADC_AMUX_THM2>;
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io-channel-names = "cp_die_temp";
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qcom,core {
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interrupts = <0x10 0x0 IRQ_TYPE_EDGE_RISING>,
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<0x10 0x1 IRQ_TYPE_EDGE_RISING>,
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<0x10 0x2 IRQ_TYPE_EDGE_RISING>,
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<0x10 0x3 IRQ_TYPE_EDGE_RISING>,
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<0x10 0x4 IRQ_TYPE_EDGE_RISING>;
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interrupt-names = "switcher-off-window",
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"switcher-off-fault",
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"vph-ov-soft",
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"ilim",
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"temp-alarm";
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};
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};
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