58dcb3d121
- LBC supervisor v1..v4 (linux/patches/b10b3-lbc-supervisor-v3.patch + b10/b10b3/lbc-v3-to-v4-fault-clamp.diff): CHARGING 4.20 V/450 mA -> HOLD 4.05 V after 60 min CV -> battery -> new cycle on USB insert; FAULT = VDD_MAX 4.00 V clamp - RAM tests C/B/D/D2/D3/D4 (safety timer only ends fast charge), B10B-4 actuator audit (VDD_MAX works, USB_SUSP does not), B10B-5 FAULT clamp regression, production run, warm reboot via PON reboot reason - cache = B10B-5 c3732515 (HW EDL write, readback + full partition verify), class-A persistent validation - test-only hooks/images are not part of the production kernel; images with the AP PSK are not published
205 lines
6.7 KiB
Text
205 lines
6.7 KiB
Text
Qualcomm QPNP Linear Charger
|
|
|
|
The charger module supports the linear battery charger peripherals on
|
|
Qualcomm PMIC chips.
|
|
|
|
There are four different peripherals in the charger module.
|
|
Each of these peripherals are implemented as subnodes.
|
|
|
|
- qcom,chgr: Supports charging control and status reporting
|
|
- qcom,bat-if: Battery status reporting such as presence and
|
|
temperature reporting.
|
|
- qcom,usb-chgpth: USB charge path detection and input current
|
|
limiting configuration.
|
|
- qcom,chg-misc: Miscellaneous features such as comparator override
|
|
features etc.
|
|
|
|
Parent node required properties:
|
|
- qcom,vddmax-mv: Target voltage of battery in mV.
|
|
- qcom,vddsafe-mv: Maximum Vdd voltage in mV.
|
|
- qcom,vinmin-mv: Minimum input voltage in mV.
|
|
- qcom,ibatsafe-ma: Safety battery current setting
|
|
|
|
Parent node optional properties:
|
|
- qcom,vbatweak-uv: Weak battery voltage threshold in uV,
|
|
above which fast charging can start.
|
|
The supported voltage range is from
|
|
3000000uV to 3581250uV with a step
|
|
size of 18750000 uV.
|
|
- qcom,charging-disabled: Set this property to disable charging
|
|
by default.
|
|
- qcom,use-default-batt-values: Set this flag to force reporting of
|
|
fake battery.
|
|
- qcom,warm-bat-decidegc: Warm battery temperature in decidegC.
|
|
- qcom,cool-bat-decidegc: Cool battery temperature in decidegC.
|
|
Note that if both warm and cool
|
|
battery temperatures are set, the
|
|
corresponding ibatmax and bat-mv
|
|
properties are required to be set.
|
|
- qcom,ibatmax-cool-ma: Maximum cool battery charge current.
|
|
- qcom,ibatmax-warm-ma: Maximum warm battery charge current.
|
|
- qcom,warm-bat-mv: Warm temperature battery target
|
|
voltage.
|
|
- qcom,cool-bat-mv: Cool temperature battery target
|
|
voltage.
|
|
- qcom,thermal-mitigation: Array of ibatmax values for different
|
|
system thermal mitigation level.
|
|
- qcom,tchg-mins: Maximum total software initialized
|
|
charge time.
|
|
- qcom,bpd-detection: Select a battery presence detection
|
|
scheme by specifying either "bpd_thm"
|
|
"bpd_id" or "bpd_thm_id". "bpd_thm"
|
|
selects the temperature pin, "bpd_id"
|
|
uses the id pin for battery presence
|
|
detection, "bpd_thm_id" selects both.
|
|
If the property is not set, the
|
|
temperatue pin will be used.
|
|
- qcom,btc-disabled: If flag is set battery hot and cold
|
|
monitoring is disabled in hardware.
|
|
This monitoring is turned on by
|
|
default.
|
|
- qcom,batt-hot-percentage: Specify a supported hot threshold
|
|
percentage.
|
|
Supported thresholds: 25% and 35%. If
|
|
none is specified hardware defaults
|
|
will be used.
|
|
- qcom,batt-cold-percentage: Specify a supported cold threshold
|
|
percentage. Supported thresholds: 70%
|
|
and 80%. If none is specified
|
|
hardwaredefaults will be used.
|
|
- qcom,chg-adc_tm Corresponding ADC TM device's phandle
|
|
to set recurring measurements and
|
|
receive notification for batt_therm.
|
|
-qcom,float-charge If specified enable float charging.
|
|
- qcom,resume-soc Capacity in percent at which charging
|
|
should resume when a fully charged
|
|
battery drops below this level.
|
|
- qcom,chg-vadc Corresponding VADC device's phandle.
|
|
- qcom,charger-detect-eoc If specified charger hardware will
|
|
detect end-of-charge.
|
|
If not specified charger driver
|
|
depends on BMSfor end-of-charge
|
|
detection.
|
|
- qcom,disable-vbatdet-based-recharge If specified disable VBATDET irq
|
|
and charging can only be resumed
|
|
if charger is re-inserted or SOC
|
|
falls below resume SOC.
|
|
This property should always be used
|
|
along with the BMS property:
|
|
"qcom,disable-suspend-on-usb".
|
|
- qcom,use-external-charger If specifed the LBC module will
|
|
be disabled and the driver will not
|
|
register. It also enables BID for
|
|
BPD and disables BTC. Declare this node
|
|
only if you are using an external charger
|
|
and not the PMIC internal LBC.
|
|
- qcom,disable-follow-on-reset If specified charger ignores PMIC
|
|
reset signal.
|
|
This should not be enabled for real
|
|
world software. To be enabled only
|
|
for testing.
|
|
|
|
Sub node required structure:
|
|
- A qcom,charger node must be a child of an SPMI node that has specified
|
|
the spmi-dev-container property. Each subnode reflects
|
|
a hardware peripheral which adds a unique set of features
|
|
to the collective charging device. For example USB detection
|
|
and the battery interface are each seperate peripherals and
|
|
each should be their own subnode.
|
|
|
|
Sub node required properties:
|
|
- compatible: Must be "qcom,qpnp-linear-charger".
|
|
- reg: Specifies the SPMI address and size for this
|
|
peripheral.
|
|
- interrupts: Specifies the interrupt associated with the
|
|
peripheral.
|
|
- interrupt-names: Specifies the interrupt names for the peripheral.
|
|
Every available interrupt needs to have an associated
|
|
name with it to indentify its purpose.
|
|
|
|
The following lists each subnode and their
|
|
corresponding required interrupt names:
|
|
|
|
qcom,usb-chgpth:
|
|
- usbin-valid
|
|
|
|
The following interrupts are available:
|
|
|
|
qcom,usb-chgpth:
|
|
- usbin-valid: Indicates valid USB
|
|
connection.
|
|
- coarse-det-usb: Coarse detect interrupt
|
|
triggers at low voltage on
|
|
USB_IN.
|
|
- chg-gone: Triggers on VCHG line.
|
|
- overtemp: Triggers on over temperature
|
|
condition
|
|
|
|
qcom,chgr:
|
|
- chg-done: Triggers on charge completion.
|
|
- chg-failed: Notifies of charge failures.
|
|
- fast-chg-on: Notifies of fast charging.
|
|
- vbat-det-lo: Triggers on vbat-det-lo
|
|
voltage.
|
|
|
|
Example:
|
|
pm8916-chg: qcom,charger {
|
|
spmi-dev-container;
|
|
compatible = "qcom,qpnp-linear-charger";
|
|
#address-cells = <1>;
|
|
#size-cells = <1>;
|
|
|
|
qcom,vddmax-mv = <4200>;
|
|
qcom,vddsafe-mv = <4200>;
|
|
qcom,vinmin-mv = <4200>;
|
|
qcom,ibatsafe-ma = <1440>;
|
|
qcom,vbatweak-uv = <3200>;
|
|
qcom,thermal-mitigation = <1500 700 600 325>;
|
|
qcom,cool-bat-decidegc = <100>;
|
|
qcom,warm-bat-decidegc = <450>;
|
|
qcom,cool-bat-mv = <4100>;
|
|
qcom,ibatmax-warm-ma = <360>;
|
|
qcom,ibatmax-cool-ma = <360>;
|
|
qcom,warm-bat-mv = <4100>;
|
|
qcom,batt-hot-percentage = <25>;
|
|
qcom,batt-cold-percentage = <85>;
|
|
qcom,tchg-mins = <152>;
|
|
qcom,resume-soc = <99>;
|
|
qcom,btc-disabled = <0>;
|
|
qcom,chg-vadc = <&pm8916_vadc>;
|
|
|
|
qcom,chgr@1000 {
|
|
reg = <0x1000 0x100>;
|
|
interrupts = <0x0 0x10 0x7>,
|
|
<0x0 0x10 0x6>,
|
|
<0x0 0x10 0x5>,
|
|
<0x0 0x10 0x0>;
|
|
|
|
interrupt-names = "chg-done",
|
|
"chg-failed",
|
|
"fast-chg-on",
|
|
"vbat-det-lo";
|
|
};
|
|
|
|
qcom,bat-if@1200 {
|
|
reg = <0x1200 0x100>;
|
|
interrupts = <0x0 0x12 0x1>,
|
|
<0x0 0x12 0x0>;
|
|
|
|
interrupt-names = "bat-temp-ok",
|
|
"batt-pres";
|
|
};
|
|
|
|
qcom,usb-chgpth@1300 {
|
|
reg = <0x1300 0x100>;
|
|
interrupts = <0 0x13 0x2>,
|
|
<0 0x13 0x1>;
|
|
|
|
interrupt-names = "chg-gone",
|
|
"usbin-valid";
|
|
};
|
|
|
|
qcom,chg-misc@1600 {
|
|
reg = <0x1600 0x100>;
|
|
};
|
|
};
|