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/Linux-v5.10/Documentation/devicetree/bindings/power/supply/
Dbq24190.txt1 TI BQ24190 Li-Ion Battery Charger
4 - compatible: contains one of the following:
9 - reg: integer, I2C address of the charger.
10 - interrupts[-extended]: configuration for charger INT pin.
13 - monitored-battery: phandle of battery characteristics devicetree node
15 + precharge-current-microamp: maximum charge current during precharge
17 + charge-term-current-microamp: a charge cycle terminates when the
18 battery voltage is above recharge threshold, and the current is below
21 - ti,system-minimum-microvolt: when power is connected and the battery is below
25 - usb-otg-vbus:
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Dbattery.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Sebastian Reichel <sre@kernel.org>
14 In smart batteries, these are typically stored in non-volatile memory
16 no appropriate non-volatile memory, or it is unprogrammed/incorrect.
27 Batteries must be referenced by chargers and/or fuel-gauges using a phandle.
28 The phandle's property should be named "monitored-battery".
32 const: simple-battery
34 over-voltage-threshold-microvolt:
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Dsc2731_charger.txt4 - compatible: Should be "sprd,sc2731-charger".
5 - reg: Address offset of charger register.
6 - phys: Contains a phandle to the USB phy.
9 - monitored-battery: phandle of battery characteristics devicetree node.
11 - charge-term-current-microamp: current for charge termination phase.
12 - constant-charge-voltage-max-microvolt: maximum constant input voltage.
18 compatible = "simple-battery";
19 charge-term-current-microamp = <120000>;
20 constant-charge-voltage-max-microvolt = <4350000>;
27 spi-max-frequency = <26000000>;
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Dbq25980.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 ---
6 $schema: "http://devicetree.org/meta-schemas/core.yaml#"
11 - Dan Murphy <dmurphy@ti.com>
12 - Ricardo Rivera-Matos <r-rivera-matos@ti.com>
16 for use in high-power density portable electronics. These inductorless
21 - $ref: power-supply.yaml#
26 - ti,bq25980
27 - ti,bq25975
28 - ti,bq25960
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Drohm,bd99954.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
11 - Markus Laine <markus.laine@fi.rohmeurope.com>
12 - Mikko Mutanen <mikko.mutanen@fi.rohmeurope.com>
15 The ROHM BD99954 is a Battery Management LSI for 1-4 cell Lithium-Ion
16 secondary battery intended to be used in space-constraint equipment such
18 provides a Dual-source Battery Charger, two port BC1.2 detection and a
28 # Curve (1) represents charging current.
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/Linux-v5.10/arch/arm64/boot/dts/sprd/
Dsp9860g-1h10.dts6 * SPDX-License-Identifier: (GPL-2.0+ OR MIT)
9 /dts-v1/;
17 compatible = "sprd,sp9860g-1h10", "sprd,sc9860";
34 stdout-path = "serial1:115200n8";
37 reserved-memory {
38 #address-cells = <2>;
39 #size-cells = <2>;
44 compatible = "simple-battery";
45 charge-full-design-microamp-hours = <1900000>;
46 charge-term-current-microamp = <120000>;
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/Linux-v5.10/drivers/power/supply/
Dpower_supply_core.c1 // SPDX-License-Identifier: GPL-2.0-only
42 if (!supply->supplied_from && !supplier->supplied_to) in __power_supply_is_supplied_by()
46 if (supply->supplied_from) { in __power_supply_is_supplied_by()
47 if (!supplier->desc->name) in __power_supply_is_supplied_by()
49 for (i = 0; i < supply->num_supplies; i++) in __power_supply_is_supplied_by()
50 if (!strcmp(supplier->desc->name, supply->supplied_from[i])) in __power_supply_is_supplied_by()
53 if (!supply->desc->name) in __power_supply_is_supplied_by()
55 for (i = 0; i < supplier->num_supplicants; i++) in __power_supply_is_supplied_by()
56 if (!strcmp(supplier->supplied_to[i], supply->desc->name)) in __power_supply_is_supplied_by()
69 if (pst->desc->external_power_changed) in __power_supply_changed_work()
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Dbq24190_charger.c1 // SPDX-License-Identifier: GPL-2.0-only
21 #include <linux/extcon-provider.h>
34 #define BQ24190_REG_POC 0x01 /* Power-On Configuration */
51 #define BQ24190_REG_CCC 0x02 /* Charge Current Control */
58 #define BQ24190_REG_PCTCC 0x03 /* Pre-charge/Termination Current Cntl */
70 #define BQ24190_REG_CVC 0x04 /* Charge Voltage Control */
79 #define BQ24190_REG_CTTC 0x05 /* Charge Term/Timer Control */
153 * reads return the current value. In order to return the fault status
182 * The tables below provide a 2-way mapping for the value that goes in
183 * the register field and the real-world value that it represents.
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