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/Linux-v5.10/Documentation/devicetree/bindings/power/supply/
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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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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/Linux-v5.10/drivers/power/supply/
Dbd99954-charger.c1 // SPDX-License-Identifier: GPL-2.0-only
16 * Curve (1) represents charging current.
20 * a) Trickle-charge with constant current (8).
21 * b) pre-charge with constant current (6)
22 * c) fast-charge, first with constant current (5) phase. After
24 * voltage phase until charging current has dropped to termination
30 *(4)` `.` ` ` ` ` ` ` ` ` ` ` ` ` ` ----------------------------.
32 * . o----+/:/ ` ` ` ` ` ` ` ` ` ` ` ` `.` ` (5)
34 * . + /- -- .
35 * . +`/- + .
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Dsmb347-charger.c1 // SPDX-License-Identifier: GPL-2.0-only
23 #include <dt-bindings/power/summit,smb347-charger.h>
26 #define SMB3XX_SOFT_TEMP_COMPENSATE_DEFAULT -1
29 #define SMB3XX_TEMP_USE_DEFAULT -273
34 * reloaded from non-volatile registers after POR.
131 * struct smb347_charger - smb347 charger instance
140 * @max_charge_current: maximum current (in uA) the battery can be charged
142 * @pre_charge_current: current (in uA) to use in pre-charging phase
143 * @termination_current: current (in uA) used to determine when the
146 * pre-charge to fast charge mode
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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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Dmax77693_charger.c1 // SPDX-License-Identifier: GPL-2.0+
3 // max77693_charger.c - Battery charger driver for the Maxim 77693
13 #include <linux/mfd/max77693-common.h>
14 #include <linux/mfd/max77693-private.h>
16 #define MAX77693_CHARGER_NAME "max77693-charger"
49 /* In high temp the charging current is reduced, but still charging */ in max77693_get_charger_state()
88 * Top-off: trickle or fast? In top-off the current varies between in max77693_get_charge_type()
89 * 100 and 250 mA. It is higher than prequalification current. in max77693_get_charge_type()
96 /* In high temp the charging current is reduced, but still charging */ in max77693_get_charge_type()
118 * - POWER_SUPPLY_HEALTH_DEAD
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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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