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/Linux-v6.1/Documentation/devicetree/bindings/hwmon/
Dti,ina2xx.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Krzysztof Kozlowski <krzk@kernel.org>
14 The INA209 is a high-side current shunt and power monitor with
23 - ti,ina209
24 - ti,ina219
25 - ti,ina220
26 - ti,ina226
27 - ti,ina230
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Dti,tmp513.yaml1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Eric Tremblay <etremblay@distech-controls.com>
14 The TMP512 (dual-channel) and TMP513 (triple-channel) are system monitors
15 that include remote sensors, a local temperature sensor, and a high-side
16 current shunt monitor. These system monitors have the capability of measuring
17 remote temperatures, on-chip temperatures, and system voltage/power/current
28 - ti,tmp512
29 - ti,tmp513
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/Linux-v6.1/drivers/hwmon/
Dina238.c1 // SPDX-License-Identifier: GPL-2.0-only
59 * based on a fixed shunt resistor value. This allows for conversion within the
61 * relative to the shunt resistor value within the driver. This is similar to
64 * The end result of this is that increasing shunt values (from a fixed 20 mOhm
65 * shunt) increase the effective current/power accuracy whilst limiting the
66 * range and decreasing shunt values decrease the effective accuracy but
70 * Current (A) = (shunt voltage register * 5) * calibration / 81920
72 * The maximum shunt voltage is 163.835 mV (0x7fff, ADC_RANGE = 0, gain = 4).
73 * With the maximum current value of 0x7fff and a fixed shunt value results in
84 * to be scaled by the difference between the fixed shunt resistor and the
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Dtmp513.c1 // SPDX-License-Identifier: GPL-2.0
7 * Local Temperature Sensor and Current Shunt Monitor
12 * and Local Temperature Sensor and Current Shunt Monitor
15 * Copyright (C) 2019 Eric Tremblay <etremblay@distech-controls.com>
110 // Max possible value is -256 to +256 but datasheet indicated -40 to 125.
112 #define MIN_TEMP_LIMIT -40000
176 // Set the shift based on the gain 8=4, 4=3, 2=2, 1=1
179 return 5 - ffs(data->pga_gain); in tmp51x_get_pga_shift()
196 * on the pga gain setting. 1lsb = 10uV in tmp51x_get_value()
198 *val = sign_extend32(regval, 17 - tmp51x_get_pga_shift(data)); in tmp51x_get_value()
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/Linux-v6.1/Documentation/devicetree/bindings/iio/afe/
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,
15 shunt, not the voltage over it. This binding describes such a current
20 const: current-sense-shunt
22 io-channels:
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/Linux-v6.1/Documentation/hwmon/
Dtmp513.rst1 .. SPDX-License-Identifier: GPL-2.0
22 Eric Tremblay <etremblay@distech-controls.com>
25 -----------
28 The TMP512 (dual-channel) and TMP513 (triple-channel) are system monitors
29 that include remote sensors, a local temperature sensor, and a high-side current
30 shunt monitor. These system monitors have the capability of measuring remote
31 temperatures, on-chip temperatures, and system voltage/power/current
35 -40 to + 125 degrees with a resolution of 0.0625 degree C.
44 **temp[1-4]_input**
46 **temp[1-4]_crit**
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/Linux-v6.1/drivers/iio/afe/
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-v6.1/drivers/comedi/drivers/
Djr3_pci.h1 /* SPDX-License-Identifier: GPL-2.0 */
31 * two-byte words.
42 * Channels 1-6 contain the coupled force data Fx through Mz. Channel
43 * 7 contains the sensor's calibration data. The use of channels 8-15
139 * was detected in the on-board RAM during the power-up
249 * 0 - end transform packet
250 * 1 - translate along X axis (TX)
251 * 2 - translate along Y axis (TY)
252 * 3 - translate along Z axis (TZ)
253 * 4 - rotate about X axis (RX)
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/Linux-v6.1/drivers/iio/adc/
Dina2xx-adc.c11 * Copyright 2010-2011 Analog Devices Inc.
14 * Copyright 2012 Lothar Felten <l-felten@ti.com>
16 * Licensed under the GPL-2 or later.
18 * IIO driver for INA219-220-226-230-231
20 * Configurable 7-bit I2C slave address from 0x40 to 0x4F
51 /* settings - depend on use case */
68 /* Gain for VShunt: 1/8 (default), 1/4, 1/2, 1 */
98 #define SAMPLING_PERIOD(c) ((c->int_time_vbus + c->int_time_vshunt) \
99 * c->avg)
145 int int_time_vshunt; /* Shunt voltage integration time uS */
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Dmax9611.c1 // SPDX-License-Identifier: GPL-2.0
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
51 * LSB and offset values depends on selected gain (1x, 4x, 8x)
53 * GAIN LSB (nV) OFFSET (LSB steps)
59 * (((adc_read >> 4) - offset) / ((1 / LSB) * 10^-3)
73 * (((adc_read >> 4) * 1000) - offset) / (1 / 14 * 1000)
115 * max9611_mux_conf - associate ADC mux configuration with register address
138 * max9611_csa_gain_conf - associate gain multiplier with LSB and
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/Linux-v6.1/arch/arm64/boot/dts/freescale/
Dimx8mm-verdin.dtsi1 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
6 #include "dt-bindings/phy/phy-imx8-pcie.h"
7 #include "dt-bindings/pwm/pwm.h"
12 stdout-path = &uart1;
21 compatible = "pwm-backlight";
22 brightness-levels = <0 45 63 88 119 158 203 255>;
23 default-brightness-level = <4>;
25 enable-gpios = <&gpio3 24 GPIO_ACTIVE_HIGH>;
26 pinctrl-names = "default";
27 pinctrl-0 = <&pinctrl_i2s_2_d_out_dsi_1_bkl_en>;
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Dimx8mp-verdin.dtsi1 // SPDX-License-Identifier: GPL-2.0-or-later OR MIT
6 #include "dt-bindings/pwm/pwm.h"
11 stdout-path = &uart3;
23 compatible = "pwm-backlight";
24 brightness-levels = <0 45 63 88 119 158 203 255>;
25 default-brightness-level = <4>;
27 enable-gpios = <&gpio5 1 GPIO_ACTIVE_HIGH>;
28 pinctrl-names = "default";
29 pinctrl-0 = <&pinctrl_i2s_2_d_out_dsi_1_bkl_en>;
30 power-supply = <&reg_3p3v>;
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