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/linux/Documentation/ABI/testing/
H A Dsysfs-class-hwmon16 The contents of the label are free-form.
135 this voltage channel is being used for, and user-space
137 user-space.
145 When disabled the sensor read will return -ENODATA.
147 - 1: Enable
148 - 0: Disable
156 - 1: Failed
157 - 0: Ok
239 Number of tachometer pulses per fan revolution.
252 per fan revolution.
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/linux/Documentation/hwmon/
H A Dchipcap2.rst1 .. SPDX-License-Identifier: GPL-2.0-or-later
12 Addresses scanned: -
14 …Datasheet: https://www.amphenol-sensors.com/en/telaire/humidity/527-humidity-sensors/3095-chipcap-2
18 - Javier Carrasco <javier.carrasco.cruz@gmail.com>
21 -----------
25 relative humidity is expressed as a per cent mille. The measurement ranges
28 - Relative humidity: 0 to 100000 pcm (14-bit resolution)
29 - Temperature: -40000 to +125000 m°C (14-bit resolution)
38 Thresholds and hysteris must be provided as a per cent mille. These values
39 might be truncated to match the 14-bit device resolution (6.1 pcm/LSB)
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/linux/Documentation/devicetree/bindings/iio/cdc/
H A Dadi,ad7746.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: AD7746 24-Bit Capacitance-to-Digital Converter with Temperature Sensor
10 - Michael Hennerich <michael.hennerich@analog.com>
13 AD7746 24-Bit Capacitance-to-Digital Converter with Temperature Sensor
16 https://www.analog.com/media/en/technical-documentation/data-sheets/ad7291.pdf
21 - adi,ad7745
22 - adi,ad7746
23 - adi,ad7747
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/linux/Documentation/devicetree/bindings/regulator/
H A Dpwm-regulator.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/regulator/pwm-regulator.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Brian Norris <briannorris@chromium.org>
11 - Lee Jones <lee@kernel.org>
12 - Alexandre Courbot <acourbot@nvidia.com>
19 duty-cycle values must be provided via DT. Limitations are that the
21 Intermediary duty-cycle values which would normally allow finer grained
23 is given to the user if the assumptions made in continuous-voltage mode do
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/linux/drivers/iio/common/inv_sensors/
H A Dinv_sensors_timestamp.c1 // SPDX-License-Identifier: GPL-2.0-or-later
13 /* compute jitter, min and max following jitter in per mille */
17 (((_val) * (1000 - (_jitter))) / 1000)
27 acc->values[acc->idx++] = val; in inv_update_acc()
28 if (acc->idx >= ARRAY_SIZE(acc->values)) in inv_update_acc()
29 acc->idx = 0; in inv_update_acc()
32 for (i = 0; i < ARRAY_SIZE(acc->values); ++i) { in inv_update_acc()
33 if (acc->values[i] == 0) in inv_update_acc()
35 sum += acc->values[i]; in inv_update_acc()
38 acc->val = div_u64(sum, i); in inv_update_acc()
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/linux/drivers/gpu/drm/sun4i/
H A Dsun4i_rgb.c1 // SPDX-License-Identifier: GPL-2.0-or-later
6 * Maxime Ripard <maxime.ripard@free-electrons.com>
51 return drm_panel_get_modes(rgb->panel, connector); in sun4i_rgb_get_modes()
57 * good default tolerance for the EDID-based modes. Define it to 5 per
58 * mille to avoid floating point operations.
66 struct sun4i_tcon *tcon = rgb->tcon; in sun4i_rgb_mode_valid()
67 u32 hsync = mode->hsync_end - mode->hsync_start; in sun4i_rgb_mode_valid()
68 u32 vsync = mode->vsync_end - mode->vsync_start; in sun4i_rgb_mode_valid()
69 unsigned long long rate = mode->clock * 1000; in sun4i_rgb_mode_valid()
81 if ((mode->hdisplay < 1) || (mode->htotal < 1)) in sun4i_rgb_mode_valid()
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