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/linux/Documentation/devicetree/bindings/iio/adc/
H A Dmicrochip,pac1934.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Marius Cristea <marius.cristea@microchip.com>
16 …oads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/PAC1931-Family-Data-Sheet-DS20005850E.…
21 - microchip,pac1931
22 - microchip,pac1932
23 - microchip,pac1933
24 - microchip,pac1934
29 "#address-cells":
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H A Dmaxim,max9611.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Maxim MAX9611 and similar current sense amplifiers with integrated ADCs
10 - Jacopo Mondi <jacopo@jmondi.org>
13 These devices combine a high-side current sense amplifier with a 12 bit ADC.
19 - maxim,max9611
20 - maxim,max9612
25 shunt-resistor-micro-ohms:
27 Value in micro Ohms of the shunt resistor connected between the RS+ and
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H A Dmicrochip,pac1921.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Microchip PAC1921 High-Side Power/Current Monitor with Anaog Output
10 - Matteo Martelli <matteomartelli3@gmail.com>
17 https://ww1.microchip.com/downloads/en/DeviceDoc/PAC1921-Data-Sheet-DS20005293E.pdf
26 vdd-supply: true
28 "#io-channel-cells":
31 shunt-resistor-micro-ohms:
33 Value in micro Ohms of the shunt resistor connected between
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H A Drichtek,rtq6056.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: RTQ6056 Bi-Directional Current and Power Monitor with 16-bit ADC
10 - ChiYuan Huang <cy_huang@richtek.com>
13 The RTQ6056 is a high accuracy current-sense monitor with I2C and SMBus
17 The device monitors both of the drops across sense resistor and the BUS
19 internal analog-to-digital converter ADC. The programmable calibration,
24 https://www.richtek.com/assets/product_file/RTQ6056/DSQ6056-00.pdf
29 - enum:
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/linux/Documentation/devicetree/bindings/iio/afe/
H A Dtemperature-transducer.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/iio/afe/temperature-transducer.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Liam Beguin <liambeguin@gmail.com>
19 When an io-channel measures the output voltage of a temperature analog front
35 -----
37 +---+---+
39 +---+---+ -----
41 V proportional to T +----+----+
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H A Dcurrent-sense-shunt.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/iio/afe/current-sense-shunt.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Current Sense Shunt
10 - Peter Rosin <peda@axentia.se>
13 When an io-channel measures the voltage over a current sense shunt,
16 sense circuit.
20 const: current-sense-shunt
22 io-channels:
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/linux/Documentation/devicetree/bindings/power/supply/
H A Dltc4162-l.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
4 ---
5 $id: http://devicetree.org/schemas/power/supply/ltc4162-l.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: Linear Technology (Analog Devices) LTC4162-L Charger
11 - Mike Looijmans <mike.looijmans@topic.nl>
14 The LTC ® 4162-L is an advanced monolithic synchronous step-down switching
17 panels, etc., and a rechargeable Lithium-Ion/Polymer battery.
20 https://www.analog.com/en/products/ltc4162-l.html
21 https://www.analog.com/en/products/ltc4162-f.html
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H A Dlltc,ltc294x.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
17 - Sebastian Reichel <sre@kernel.org>
20 - $ref: power-supply.yaml#
25 - lltc,ltc2941
26 - lltc,ltc2942
27 - lltc,ltc2943
28 - lltc,ltc2944
33 lltc,resistor-sense:
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/linux/Documentation/devicetree/bindings/mfd/
H A Dmaxim,max5970.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Patrick Rudolph <patrick.rudolph@9elements.com>
24 - maxim,max5970
25 - maxim,max5978
39 "#address-cells":
42 "#size-cells":
46 "^led@[0-3]$":
57 vss1-supply:
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H A Drohm,bd71828-pmic.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/mfd/rohm,bd71828-pmic.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Matti Vaittinen <mazziesaccount@gmail.com>
13 BD71828GW is a single-chip power management IC for battery-powered portable
15 single-cell linear charger. Also included is a Coulomb counter, a real-time
21 - const: rohm,bd71828
23 - items:
24 - const: rohm,bd71879
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H A Drockchip,rk817.yaml1 # SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Chris Zhong <zyw@rock-chips.com>
11 - Zhang Qing <zhangqing@rock-chips.com>
21 - rockchip,rk809
22 - rockchip,rk817
30 '#clock-cells':
32 See <dt-bindings/clock/rockchip,rk808.h> for clock IDs.
39 clock-names:
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/linux/Documentation/devicetree/bindings/hwmon/
H A Dadi,adm1177.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Michael Hennerich <michael.hennerich@analog.com>
14 https://www.analog.com/media/en/technical-documentation/data-sheets/ADM1177.pdf
19 - adi,adm1177
24 avcc-supply:
28 shunt-resistor-micro-ohms:
30 The value of current sense resistor in microohms. If not provided,
33 adi,shutdown-threshold-microamp:
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H A Dhwmon-common.yaml1 # SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
3 ---
4 $id: http://devicetree.org/schemas/hwmon/hwmon-common.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Guenter Roeck <linux@roeck-us.net>
16 shunt-resistor-micro-ohms:
17 description: The value of current sense resistor.
H A Dadi,ltc4282.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Nuno Sa <nuno.sa@analog.com>
15 https://www.analog.com/media/en/technical-documentation/data-sheets/ltc4282.pdf
20 - adi,ltc4282
25 vdd-supply: true
30 '#clock-cells':
33 adi,rsense-nano-ohms:
34 description: Value of the sense resistor.
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/linux/Documentation/devicetree/bindings/hwmon/pmbus/
H A Dti,lm25066.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: National Semiconductor/Texas Instruments LM250x6/LM506x power-management ICs
11 - Zev Weiss <zev@bewilderbeest.net>
14 The LM25066 family of power-management ICs (a.k.a. hot-swap
23 - ti,lm25056
24 - ti,lm25066
25 - ti,lm5064
26 - ti,lm5066
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/linux/drivers/iio/afe/
H A Diio-rescale.c1 // SPDX-License-Identifier: GPL-2.0
33 *val *= rescale->numerator; in rescale_process_scale()
34 if (rescale->denominator == 1) in rescale_process_scale()
36 *val2 = rescale->denominator; in rescale_process_scale()
44 if (!check_mul_overflow(*val, rescale->numerator, &_val) && in rescale_process_scale()
45 !check_mul_overflow(*val2, rescale->denominator, &_val2)) { in rescale_process_scale()
53 tmp = div_s64(tmp, rescale->denominator); in rescale_process_scale()
54 tmp *= rescale->numerator; in rescale_process_scale()
82 * *val = 1 and *val2 = -0.5 yields -1.5 not -0.5. in rescale_process_scale()
86 tmp = (s64)abs(*val) * abs(rescale->numerator); in rescale_process_scale()
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/linux/arch/arm64/boot/dts/ti/
H A Dk3-am62p-verdin-ivy.dtsi1 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
7 * https://www.toradex.com/computer-on-modules/verdin-arm-family/ti-am62p
8 * https://www.toradex.com/products/carrier-board/ivy-carrier-board
11 #include <dt-bindings/mux/mux.h>
12 #include <dt-bindings/leds/common.h>
13 #include <dt-bindings/net/ti-dp83867.h>
21 ain1_voltage_unmanaged: voltage-divider-ain1 {
22 compatible = "voltage-divider";
23 #io-channel-cells = <1>;
24 io-channels = <&ivy_adc1 0>;
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/linux/drivers/hwmon/
H A Dltc4151.c1 // SPDX-License-Identifier: GPL-2.0-or-later
25 #include <linux/hwmon-sysfs.h>
42 unsigned int shunt; /* in micro ohms */
51 struct i2c_client *client = data->client; in ltc4151_update_device()
54 mutex_lock(&data->update_lock); in ltc4151_update_device()
58 * (Conversion Rate 6 - 9 Hz) in ltc4151_update_device()
60 if (time_after(jiffies, data->last_updated + HZ / 6) || !data->valid) { in ltc4151_update_device()
63 dev_dbg(&client->dev, "Starting ltc4151 update\n"); in ltc4151_update_device()
66 for (i = 0; i < ARRAY_SIZE(data->regs); i++) { in ltc4151_update_device()
77 data->regs[i] = val; in ltc4151_update_device()
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H A Dltc2945.c1 // SPDX-License-Identifier: GPL-2.0-or-later
14 #include <linux/hwmon-sysfs.h>
68 * struct ltc2945_data - LTC2945 device data
70 * @shunt_resistor: shunt resistor value in micro ohms (1000 by default)
86 struct regmap *regmap = data->regmap; in ltc2945_reg_to_val()
87 u32 shunt_resistor = data->shunt_resistor; in ltc2945_reg_to_val()
99 /* 24-bit power */ in ltc2945_reg_to_val()
102 /* 12-bit current, voltage */ in ltc2945_reg_to_val()
114 * Control register bit 0 selects if voltage at SENSE+/VDD in ltc2945_reg_to_val()
128 /* Overflow check: Assuming max 24-bit power, val is at most 53 bits right now. */ in ltc2945_reg_to_val()
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H A Dadm1177.c1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright 2015-2019 Analog Devices Inc.
27 * struct adm1177_state - driver instance specific data
29 * @r_sense_uohm: current sense resistor value
42 return i2c_master_recv(st->client, data, num); in adm1177_read_raw()
47 return i2c_smbus_write_byte(st->client, cmd); in adm1177_write_cmd()
56 val = 0xFFULL * alert_threshold_ua * st->r_sense_uohm; in adm1177_write_alert_thr()
62 ret = i2c_smbus_write_byte_data(st->client, ADM1177_REG_ALERT_TH, in adm1177_write_alert_thr()
67 st->alert_threshold_ua = alert_threshold_ua; in adm1177_write_alert_thr()
92 4096 * st->r_sense_uohm); in adm1177_read()
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/linux/Documentation/devicetree/bindings/iio/addac/
H A Dadi,ad74413r.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Cosmin Tanislav <cosmin.tanislav@analog.com>
13 The AD74412R and AD74413R are quad-channel software configurable input/output
18 The devices feature a 16-bit ADC and four configurable 13-bit DACs to provide
20 The AD74413R differentiates itself from the AD74412R by being HART-compatible.
27 - adi,ad74412r
28 - adi,ad74413r
33 '#address-cells':
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/linux/drivers/iio/adc/
H A Dqcom-spmi-iadc.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2012-2014, The Linux Foundation. All rights reserved.
71 #define IADC_INT_RSENSE_DEVIATION 15625 /* nano Ohms per bit */
73 #define IADC_INT_RSENSE_IDEAL_VALUE 10000 /* micro Ohms */
74 #define IADC_INT_RSENSE_DEFAULT_VALUE 7800 /* micro Ohms */
75 #define IADC_INT_RSENSE_DEFAULT_GF 9000 /* micro Ohms */
76 #define IADC_INT_RSENSE_DEFAULT_SMIC 9700 /* micro Ohms */
94 * struct iadc_chip - IADC Current ADC device structure.
98 * @rsense: Values of the internal and external sense resister in micro Ohms.
122 ret = regmap_read(iadc->regmap, iadc->base + offset, &val); in iadc_read()
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H A Dmax9611.c1 // SPDX-License-Identifier: GPL-2.0
5 * Maxim max9611/max9612 high side current sense amplifier with
6 * 12-bit ADC interface.
12 * This driver supports input common-mode voltage, current-sense
16 * Op-amp, analog comparator, and watchdog functionalities are not
48 * max9611 current sense amplifier voltage output:
56 * The complete formula to calculate current sense voltage is:
57 * (((adc_read >> 4) - offset) / ((1 / LSB) * 10^-3)
71 * (((adc_read >> 4) * 1000) - offset) / (1 / 14 * 1000)
113 * max9611_mux_conf - associate ADC mux configuration with register address
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/linux/include/linux/power/
H A Dmax17042_battery.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
191 /* External current sense resistor value in milli-ohms */
255 * R_sns in micro-ohms.
/linux/arch/arm/boot/dts/samsung/
H A Ds5pv210-aries.dtsi1 // SPDX-License-Identifier: GPL-2.0
6 /dts-v1/;
7 #include <dt-bindings/gpio/gpio.h>
8 #include <dt-bindings/interrupt-controller/irq.h>
32 reserved-memory {
33 #address-cells = <1>;
34 #size-cells = <1>;
38 compatible = "shared-dma-pool";
39 no-map;
44 compatible = "shared-dma-pool";
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