Home
last modified time | relevance | path

Searched full:tach (Results 1 – 25 of 47) sorted by relevance

12

/linux/Documentation/devicetree/bindings/hwmon/
H A Daspeed,g6-pwm-tach.yaml5 $id: http://devicetree.org/schemas/hwmon/aspeed,g6-pwm-tach.yaml#
8 title: ASPEED G6 PWM and Fan Tach controller
15 The ASPEED Fan Tacho controller can support up to 16 fan tach input.
22 - aspeed,ast2600-pwm-tach
41 - tach-ch
55 pwm_tach: pwm-tach-controller@1e610000 {
56 compatible = "aspeed,ast2600-pwm-tach";
63 tach-ch = /bits/ 8 <0x0>;
68 tach-ch = /bits/ 8 <0x1 0x2>;
H A Daspeed-pwm-tacho.txt7 one/two Fan tach inputs.
33 one/two Fan tach inputs.
45 - aspeed,fan-tach-ch : should specify the Fan tach input channel.
47 Fan tach channel 0 and 15 indicating Fan tach channel 15.
48 At least one Fan tach input channel is required.
66 aspeed,fan-tach-ch = /bits/ 8 <0x00>;
71 aspeed,fan-tach-ch = /bits/ 8 <0x01 0x02>;
H A Dnpcm750-pwm-fan.txt30 Each fan subnode must have one PWM channel and at least one Fan tach channel.
40 - fan-tach-ch : specify the Fan tach input channel.
42 the fan tach channel number that used.
44 At least one Fan tach input channel is required
76 fan-tach-ch = /bits/ 8 <0x00 0x01>;
81 fan-tach-ch = /bits/ 8 <0x02 0x03>;
85 fan-tach-ch = /bits/ 8 <0x04>;
H A Dfan-common.yaml32 tach-div:
34 Divisor for the tach sampling clock, which determines the sensitivity of the tach pin.
61 tach-ch:
63 The tach channel used for the fan.
/linux/arch/arm/boot/dts/aspeed/
H A Daspeed-bmc-amd-daytonax.dts233 aspeed,fan-tach-ch = /bits/ 8 <0x00>;
238 aspeed,fan-tach-ch = /bits/ 8 <0x01>;
243 aspeed,fan-tach-ch = /bits/ 8 <0x02>;
248 aspeed,fan-tach-ch = /bits/ 8 <0x03>;
253 aspeed,fan-tach-ch = /bits/ 8 <0x04>;
258 aspeed,fan-tach-ch = /bits/ 8 <0x05>;
263 aspeed,fan-tach-ch = /bits/ 8 <0x06>;
268 aspeed,fan-tach-ch = /bits/ 8 <0x07>;
273 aspeed,fan-tach-ch = /bits/ 8 <0x08>;
278 aspeed,fan-tach-ch = /bits/ 8 <0x09>;
[all …]
H A Daspeed-bmc-lenovo-hr630.dts337 aspeed,fan-tach-ch = /bits/ 8 <0x00>;
342 aspeed,fan-tach-ch = /bits/ 8 <0x01>;
347 aspeed,fan-tach-ch = /bits/ 8 <0x02>;
352 aspeed,fan-tach-ch = /bits/ 8 <0x03>;
357 aspeed,fan-tach-ch = /bits/ 8 <0x04>;
362 aspeed,fan-tach-ch = /bits/ 8 <0x05>;
367 aspeed,fan-tach-ch = /bits/ 8 <0x06>;
372 aspeed,fan-tach-ch = /bits/ 8 <0x07>;
377 aspeed,fan-tach-ch = /bits/ 8 <0x08>;
382 aspeed,fan-tach-ch = /bits/ 8 <0x09>;
[all …]
H A Daspeed-bmc-microsoft-olympus.dts179 aspeed,fan-tach-ch = /bits/ 8 <0x00>;
184 aspeed,fan-tach-ch = /bits/ 8 <0x01>;
189 aspeed,fan-tach-ch = /bits/ 8 <0x02>;
194 aspeed,fan-tach-ch = /bits/ 8 <0x03>;
199 aspeed,fan-tach-ch = /bits/ 8 <0x04>;
204 aspeed,fan-tach-ch = /bits/ 8 <0x05>;
H A Daspeed-bmc-facebook-wedge40.dts36 aspeed,fan-tach-ch = /bits/ 8 <0x00 0x01>;
41 aspeed,fan-tach-ch = /bits/ 8 <0x02 0x03>;
46 aspeed,fan-tach-ch = /bits/ 8 <0x04 0x05>;
51 aspeed,fan-tach-ch = /bits/ 8 <0x06 0x07>;
H A Daspeed-bmc-amd-ethanolx.dts299 aspeed,fan-tach-ch = /bits/ 8 <0x00>;
304 aspeed,fan-tach-ch = /bits/ 8 <0x01>;
309 aspeed,fan-tach-ch = /bits/ 8 <0x02>;
314 aspeed,fan-tach-ch = /bits/ 8 <0x03>;
319 aspeed,fan-tach-ch = /bits/ 8 <0x04>;
324 aspeed,fan-tach-ch = /bits/ 8 <0x05>;
329 aspeed,fan-tach-ch = /bits/ 8 <0x06>;
334 aspeed,fan-tach-ch = /bits/ 8 <0x07>;
H A Daspeed-bmc-vegman-sx20.dts128 aspeed,fan-tach-ch = /bits/ 8 <0x00>;
132 aspeed,fan-tach-ch = /bits/ 8 <0x01>;
136 aspeed,fan-tach-ch = /bits/ 8 <0x02>;
140 aspeed,fan-tach-ch = /bits/ 8 <0x03>;
144 aspeed,fan-tach-ch = /bits/ 8 <0x04>;
148 aspeed,fan-tach-ch = /bits/ 8 <0x05>;
152 aspeed,fan-tach-ch = /bits/ 8 <0x06>;
H A Daspeed-bmc-vegman-n110.dts127 aspeed,fan-tach-ch = /bits/ 8 <0x00 0x06>;
131 aspeed,fan-tach-ch = /bits/ 8 <0x01 0x08>;
135 aspeed,fan-tach-ch = /bits/ 8 <0x02 0x09>;
139 aspeed,fan-tach-ch = /bits/ 8 <0x03 0x0A>;
143 aspeed,fan-tach-ch = /bits/ 8 <0x04 0x0B>;
147 aspeed,fan-tach-ch = /bits/ 8 <0x05>;
H A Daspeed-bmc-quanta-q71l.dts419 aspeed,fan-tach-ch = /bits/ 8 <0x00>;
424 aspeed,fan-tach-ch = /bits/ 8 <0x01>;
429 aspeed,fan-tach-ch = /bits/ 8 <0x02>;
434 aspeed,fan-tach-ch = /bits/ 8 <0x03>;
439 aspeed,fan-tach-ch = /bits/ 8 <0x04>;
444 aspeed,fan-tach-ch = /bits/ 8 <0x05>;
449 aspeed,fan-tach-ch = /bits/ 8 <0x06>;
454 aspeed,fan-tach-ch = /bits/ 8 <0x07>;
H A Daspeed-bmc-opp-tacoma.dts486 tach-pulses = <2>;
487 maxim,fan-rotor-input = "tach";
489 maxim,fan-dual-tach;
499 tach-pulses = <2>;
500 maxim,fan-rotor-input = "tach";
502 maxim,fan-dual-tach;
512 tach-pulses = <2>;
513 maxim,fan-rotor-input = "tach";
515 maxim,fan-dual-tach;
525 tach-pulses = <2>;
[all …]
H A Daspeed-bmc-ampere-mtjade.dts700 aspeed,fan-tach-ch = /bits/ 8 <0x04>;
705 aspeed,fan-tach-ch = /bits/ 8 <0x05>;
710 aspeed,fan-tach-ch = /bits/ 8 <0x06>;
715 aspeed,fan-tach-ch = /bits/ 8 <0x07>;
720 aspeed,fan-tach-ch = /bits/ 8 <0x08>;
725 aspeed,fan-tach-ch = /bits/ 8 <0x09>;
730 aspeed,fan-tach-ch = /bits/ 8 <0x0a>;
735 aspeed,fan-tach-ch = /bits/ 8 <0x0b>;
740 aspeed,fan-tach-ch = /bits/ 8 <0x0c>;
745 aspeed,fan-tach-ch = /bits/ 8 <0x0d>;
[all …]
H A Daspeed-bmc-inspur-nf5280m6.dts620 aspeed,fan-tach-ch = /bits/ 8 <0x00 0x01>;
625 aspeed,fan-tach-ch = /bits/ 8 <0x02 0x03>;
630 aspeed,fan-tach-ch = /bits/ 8 <0x04 0x05>;
635 aspeed,fan-tach-ch = /bits/ 8 <0x06 0x07>;
640 aspeed,fan-tach-ch = /bits/ 8 <0x08 0x09>;
645 aspeed,fan-tach-ch = /bits/ 8 <0x0a 0x0b>;
650 aspeed,fan-tach-ch = /bits/ 8 <0x0c 0x0d>;
655 aspeed,fan-tach-ch = /bits/ 8 <0x0e 0x0f>;
H A Daspeed-bmc-tyan-s7106.dts183 aspeed,fan-tach-ch = /bits/ 8 <0x00>;
189 aspeed,fan-tach-ch = /bits/ 8 <0x01>;
195 aspeed,fan-tach-ch = /bits/ 8 <0x02>;
200 aspeed,fan-tach-ch = /bits/ 8 <0x03>;
205 aspeed,fan-tach-ch = /bits/ 8 <0x04>;
210 aspeed,fan-tach-ch = /bits/ 8 <0x05>;
216 aspeed,fan-tach-ch = /bits/ 8 <0x06>;
221 aspeed,fan-tach-ch = /bits/ 8 <0x07>;
H A Daspeed-bmc-tyan-s8036.dts182 aspeed,fan-tach-ch = /bits/ 8 <0x00>;
188 aspeed,fan-tach-ch = /bits/ 8 <0x02>;
193 aspeed,fan-tach-ch = /bits/ 8 <0x03>;
198 aspeed,fan-tach-ch = /bits/ 8 <0x04>;
203 aspeed,fan-tach-ch = /bits/ 8 <0x05>;
209 aspeed,fan-tach-ch = /bits/ 8 <0x06>;
214 aspeed,fan-tach-ch = /bits/ 8 <0x07>;
H A Daspeed-bmc-asrock-spc621d8hm3.dts230 aspeed,fan-tach-ch = /bits/ 8 <0x00>;
235 aspeed,fan-tach-ch = /bits/ 8 <0x02>;
240 aspeed,fan-tach-ch = /bits/ 8 <0x03>;
245 aspeed,fan-tach-ch = /bits/ 8 <0x04>;
/linux/drivers/gpu/drm/nouveau/nvkm/subdev/therm/
H A Dgt215.c32 u32 tach = nvkm_rd32(device, 0x00e728) & 0x0000ffff; in gt215_therm_fan_sense() local
35 return tach * 60 / 2; in gt215_therm_fan_sense()
43 struct dcb_gpio_func *tach = &therm->fan->tach; in gt215_therm_init() local
47 /* enable fan tach, count revolutions per-second */ in gt215_therm_init()
49 if (tach->func != DCB_GPIO_UNUSED) { in gt215_therm_init()
51 nvkm_mask(device, 0x00e720, 0x001f0000, tach->line << 16); in gt215_therm_init()
H A Dfan.c130 u64 start, end, tach; in nvkm_therm_fan_sense() local
135 if (therm->fan->tach.func == DCB_GPIO_UNUSED) in nvkm_therm_fan_sense()
143 prev = nvkm_gpio_get(gpio, 0, therm->fan->tach.func, in nvkm_therm_fan_sense()
144 therm->fan->tach.line); in nvkm_therm_fan_sense()
149 cur = nvkm_gpio_get(gpio, 0, therm->fan->tach.func, in nvkm_therm_fan_sense()
150 therm->fan->tach.line); in nvkm_therm_fan_sense()
161 tach = (u64)60000000000ULL; in nvkm_therm_fan_sense()
162 do_div(tach, (end - start)); in nvkm_therm_fan_sense()
163 return tach; in nvkm_therm_fan_sense()
260 &therm->fan->tach); in nvkm_therm_fan_ctor()
[all …]
/linux/drivers/hwmon/
H A Dmax6620.c141 u16 tach[4]; member
155 static int max6620_fan_tach_to_rpm(u8 div, u16 tach) in max6620_fan_tach_to_rpm() argument
157 return (60 * div * MAX6620_CLOCK_FREQ) / (tach * MAX6620_PULSE_PER_REV); in max6620_fan_tach_to_rpm()
184 data->tach[i] = (ret << 3) & 0x7f8; in max6620_update_device()
188 data->tach[i] |= (ret >> 5) & 0x7; in max6620_update_device()
267 /* Setting TACH count to re-enable fan fault detection */ in max6620_read()
293 if (data->tach[channel] == 0) { in max6620_read()
297 *val = max6620_fan_tach_to_rpm(div, data->tach[channel]); in max6620_read()
328 u16 tach; in max6620_write() local
374 tach = max6620_fan_rpm_to_tach(div, val); in max6620_write()
[all …]
H A Daspeed-g6-pwm-tach.c5 * PWM/TACH controller driver for Aspeed ast2600 SoCs.
87 /* The channel number of Aspeed tach controller */
89 /* TACH Control Register */
116 /* TACH Status Register */
433 count = of_property_count_u8_elems(child, "tach-ch"); in aspeed_create_fan_monitor()
439 ret = of_property_read_u8_array(child, "tach-ch", tach_ch, count); in aspeed_create_fan_monitor()
529 .compatible = "aspeed,ast2600-pwm-tach",
539 .name = "aspeed-g6-pwm-tach",
547 MODULE_DESCRIPTION("Aspeed ast2600 PWM and Fan Tach device driver");
/linux/arch/arm/boot/dts/nuvoton/
H A Dnuvoton-npcm750-evb.dts284 fan-tach-ch = /bits/ 8 <0x00 0x01>;
289 fan-tach-ch = /bits/ 8 <0x02 0x03>;
294 fan-tach-ch = /bits/ 8 <0x04 0x05>;
299 fan-tach-ch = /bits/ 8 <0x06 0x07>;
304 fan-tach-ch = /bits/ 8 <0x08 0x09>;
309 fan-tach-ch = /bits/ 8 <0x0A 0x0B>;
314 fan-tach-ch = /bits/ 8 <0x0C 0x0D>;
319 fan-tach-ch = /bits/ 8 <0x0E 0x0F>;
/linux/Documentation/hwmon/
H A Dsmsc47b397.rst69 Reading tach information.
83 Reading the tach LSB locks the tach MSB.
86 How to convert the tach reading to RPM
89 The tach reading (TCount) is given by: (Tach MSB * 256) + (Tach LSB)
H A Dlm93.rst127 Smart Tach Mode (from the datasheet)::
132 achieved despite the signal corruption. In smart tach mode all
135 Smart tach mode is enabled by the driver by writing 1 or 2 (associating the
137 will disable the function for that fan. Note that Smart tach mode cannot be
162 that this parameter has implications for the Smart Tach Mode (see above).
279 four tach input pins. GPIO0-GPIO3 correspond to (fan) tach 1-4, respectively.
299 fan<n>_smart_tach enable or disable smart tach mode

12