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Qualcomm Technologies, Inc. SMB5 Charger Specific Bindings
SMB5 Charger is an efficient programmable battery charger capable of charging a
high-capacity lithium-ion battery over micro-USB or USB Type-C ultrafast with
Quick Charge 2.0, Quick Charge 3.0, and USB Power Delivery support. Wireless
charging features full A4WP Rezence 1.2, WPC 1.2, and PMA support.
=======================
Required Node Structure
=======================
SMB5 Charger must be described in two levels of devices nodes.
===============================
First Level Node - SMB5 Charger
===============================
Charger specific properties:
- compatible
Usage: required
Value type: <string>
Definition: "qcom,qpnp-smb5".
- qcom,pmic-revid
Usage: required
Value type: phandle
Definition: Should specify the phandle of PMI's revid module. This is used to
identify the PMI subtype.
- qcom,batteryless-platform
Usage: optional
Value type: <empty>
Definition: Boolean flag which indicates that the platform does not have a
battery, and therefore charging should be disabled. In
addition battery properties will be faked such that the device
assumes normal operation.
- qcom,fcc-max-ua
Usage: optional
Value type: <u32>
Definition: Specifies the maximum fast charge current in micro-amps.
If the value is not present, 1Amp is used as default.
- qcom,fv-max-uv
Usage: optional
Value type: <u32>
Definition: Specifies the maximum float voltage in micro-volts.
If the value is not present, 4.35V is used as default.
- qcom,usb-icl-ua
Usage: optional
Value type: <u32>
Definition: Specifies the USB input current limit in micro-amps.
If the value is not present, 1.5Amps is used as default.
- qcom,usb-ocl-ua
Usage: optional
Value type: <u32>
Definition: Specifies the OTG output current limit in micro-amps.
If the value is not present, 1.5Amps is used as default.
- qcom,dc-icl-ua
Usage: optional
Value type: <u32>
Definition: Specifies the DC input current limit in micro-amps.
- qcom,boost-threshold-ua
Usage: optional
Value type: <u32>
Definition: Specifies the boost current threshold in micro-amps.
If the value is not present, 100mA is used as default.
- qcom,thermal-mitigation
Usage: optional
Value type: Array of <u32>
Definition: Array of fast charge current limit values for
different system thermal mitigation levels.
This should be a flat array that denotes the
maximum charge current in mA for each thermal
level.
- qcom,float-option
Usage: optional
Value type: <u32>
Definition: Configures how the charger behaves when a float charger is
detected by APSD.
1 - Treat as a DCP.
2 - Treat as a SDP.
3 - Disable charging.
4 - Suspend USB input.
- qcom,hvdcp-disable
Usage: optional
Value type: <empty>
Definition: Specifies if hvdcp charging is to be enabled or not.
If this property is not specified hvdcp will be enabled.
If this property is specified, hvdcp 2.0 detection will still
happen but the adapter won't be asked to switch to a higher
voltage point.
- qcom,chg-inhibit-threshold-mv
Usage: optional
Value type: <u32>
Definition: Charge inhibit threshold in milli-volts. Charging will be
inhibited when the battery voltage is within this threshold
from Vfloat at charger insertion. If this is not specified
then charge inhibit will be disabled by default.
Allowed values are: 50, 100, 200, 300.
- qcom,auto-recharge-soc
Usage: optional
Value type: <empty>
Definition: Specifies if automatic recharge needs to be based off battery
SOC. If this property is not specified, then auto recharge will
be based off battery voltage.
- qcom,suspend-input-on-debug-batt
Usage: optional
Value type: <empty>
Definition: Boolean flag which when present enables input suspend for
debug battery.
- qcom,min-freq-khz
Usage: optional
Value type: <u32>
Definition: Specifies the minimum charger buck/boost switching frequency
in KHz. It overrides the min frequency defined for the charger.
- qcom,max-freq-khz
Usage: optional
Value type: <u32>
Definition: Specifies the maximum charger buck/boost switching frequency in
KHz. It overrides the max frequency defined for the charger.
- qcom,otg-deglitch-time-ms
Usage: optional
Value type: <u32>
Definition: Specifies the deglitch interval for OTG detection.
If the value is not present, 50 msec is used as default.
- qcom,step-charging-enable
Usage: optional
Value type: bool
Definition: Boolean flag which when present enables step-charging.
- qcom,wd-bark-time-secs
Usage: optional
Value type: <u32>
Definition: WD bark-timeout in seconds. The possible values are
16, 32, 64, 128. If not defined it defaults to 64.
- qcom,sw-jeita-enable
Usage: optional
Value type: bool
Definition: Boolean flag which when present enables sw compensation for
jeita.
- qcom,battery-data
Usage: optional
Value type: <phandle>
Definition: Specifies the phandle of the node which contains the battery
profiles supported on the device. This is only specified
when step charging and sw-jeita configurations are desired
to be get from these properties defined in battery profile:
qcom,step-chg-ranges, qcom,jeita-fcc-ranges, qcom,jeita-fv-ranges.
=============================================
Second Level Nodes - SMB5 Charger Peripherals
=============================================
Peripheral specific properties:
- reg
Usage: required
Value type: <prop-encoded-array>
Definition: Address and size of the peripheral's register block.
- interrupts
Usage: required
Value type: <prop-encoded-array>
Definition: Peripheral interrupt specifier.
- interrupt-names
Usage: required
Value type: <stringlist>
Definition: Interrupt names. This list must match up 1-to-1 with the
interrupts specified in the 'interrupts' property.
=======
Example
=======
pmi8998_charger: qcom,qpnp-smb5 {
compatible = "qcom,qpnp-smb5";
#address-cells = <1>;
#size-cells = <1>;
dpdm-supply = <&qusb_phy0>;
qcom,chgr@1000 {
reg = <0x1000 0x100>;
interrupts = <0x2 0x10 0x0 IRQ_TYPE_NONE>,
<0x2 0x10 0x1 IRQ_TYPE_NONE>,
<0x2 0x10 0x2 IRQ_TYPE_NONE>,
<0x2 0x10 0x3 IRQ_TYPE_NONE>,
<0x2 0x10 0x4 IRQ_TYPE_NONE>;
interrupt-names = "chg-error",
"chg-state-change",
"step-chg-state-change",
"step-chg-soc-update-fail",
"step-chg-soc-update-request";
};
qcom,otg@1100 {
reg = <0x1100 0x100>;
interrupts = <0x2 0x11 0x0 IRQ_TYPE_NONE>,
<0x2 0x11 0x1 IRQ_TYPE_NONE>,
<0x2 0x11 0x2 IRQ_TYPE_NONE>,
<0x2 0x11 0x3 IRQ_TYPE_NONE>;
interrupt-names = "otg-fail",
"otg-overcurrent",
"otg-oc-dis-sw-sts",
"testmode-change-detect";
};
qcom,bat-if@1200 {
reg = <0x1200 0x100>;
interrupts = <0x2 0x12 0x0 IRQ_TYPE_NONE>,
<0x2 0x12 0x1 IRQ_TYPE_NONE>,
<0x2 0x12 0x2 IRQ_TYPE_NONE>,
<0x2 0x12 0x3 IRQ_TYPE_NONE>,
<0x2 0x12 0x4 IRQ_TYPE_NONE>,
<0x2 0x12 0x5 IRQ_TYPE_NONE>;
interrupt-names = "bat-temp",
"bat-ocp",
"bat-ov",
"bat-low",
"bat-therm-or-id-missing",
"bat-terminal-missing";
};
qcom,usb-chgpth@1300 {
reg = <0x1300 0x100>;
interrupts = <0x2 0x13 0x0 IRQ_TYPE_NONE>,
<0x2 0x13 0x1 IRQ_TYPE_NONE>,
<0x2 0x13 0x2 IRQ_TYPE_NONE>,
<0x2 0x13 0x3 IRQ_TYPE_NONE>,
<0x2 0x13 0x4 IRQ_TYPE_NONE>,
<0x2 0x13 0x5 IRQ_TYPE_NONE>,
<0x2 0x13 0x6 IRQ_TYPE_NONE>,
<0x2 0x13 0x7 IRQ_TYPE_NONE>;
interrupt-names = "usbin-collapse",
"usbin-lt-3p6v",
"usbin-uv",
"usbin-ov",
"usbin-plugin",
"usbin-src-change",
"usbin-icl-change",
"type-c-change";
};
qcom,dc-chgpth@1400 {
reg = <0x1400 0x100>;
interrupts = <0x2 0x14 0x0 IRQ_TYPE_NONE>,
<0x2 0x14 0x1 IRQ_TYPE_NONE>,
<0x2 0x14 0x2 IRQ_TYPE_NONE>,
<0x2 0x14 0x3 IRQ_TYPE_NONE>,
<0x2 0x14 0x4 IRQ_TYPE_NONE>,
<0x2 0x14 0x5 IRQ_TYPE_NONE>,
<0x2 0x14 0x6 IRQ_TYPE_NONE>;
interrupt-names = "dcin-collapse",
"dcin-lt-3p6v",
"dcin-uv",
"dcin-ov",
"dcin-plugin",
"div2-en-dg",
"dcin-icl-change";
};
qcom,chgr-misc@1600 {
reg = <0x1600 0x100>;
interrupts = <0x2 0x16 0x0 IRQ_TYPE_NONE>,
<0x2 0x16 0x1 IRQ_TYPE_NONE>,
<0x2 0x16 0x2 IRQ_TYPE_NONE>,
<0x2 0x16 0x3 IRQ_TYPE_NONE>,
<0x2 0x16 0x4 IRQ_TYPE_NONE>,
<0x2 0x16 0x5 IRQ_TYPE_NONE>,
<0x2 0x16 0x6 IRQ_TYPE_NONE>,
<0x2 0x16 0x7 IRQ_TYPE_NONE>;
interrupt-names = "wdog-snarl",
"wdog-bark",
"aicl-fail",
"aicl-done",
"high-duty-cycle",
"input-current-limiting",
"temperature-change",
"switcher-power-ok";
};
};