pulses\-per\-revolution (full) in projects: OK3568_Linux_fs

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Searched +full:pulses +full:- +full:per +full:- +full:revolution (Results 1 – 15 of 15) sorted by relevance

/OK3568_Linux_fs/kernel/Documentation/devicetree/bindings/hwmon/
H A D	adi,axi-fan-control.yaml	`1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 4 --- 5 $id: http://devicetree.org/schemas/hwmon/adi,axi-fan-control.yaml# 6 $schema: http://devicetree.org/meta-schemas/core.yaml# 11 - Nuno Sá <nuno.sa@analog.com> 22 - adi,axi-fan-control-1.00.a 33 pulses-per-revolution: 35 Value specifying the number of pulses per revolution of the controlled 41 - compatible 42 - reg [all …]`
H A D	pwm-fan.txt	4 - compatible : "pwm-fan" 5 - pwms : the PWM that is used to control the PWM fan 6 - cooling-levels : PWM duty cycle values in a range from 0 to 255 10 - fan-supply : phandle to the regulator that provides power to the fan 11 - interrupts : This contains a single interrupt specifier which 14 defined number of interrupts per fan revolution, which 16 See interrupt-controller/interrupts.txt for the format. 17 - pulses-per-revolution : define the tachometer pulses per fan revolution as 18 an integer (default is 2 interrupts per revolution). 20 - rockchip,temp-trips : The property is an array of 2-tuples items, and [all …]
/OK3568_Linux_fs/kernel/Documentation/hwmon/
H A D	g762.rst	5 and performs closed-loop or open-loop control of the fan speed. Two 6 modes - PWM or DC - are supported by the device. 9 http://natisbad.org/NAS/ref/GMT_EDS-762_763-080710-0.2.pdf. sysfs 10 bindings are described in Documentation/hwmon/sysfs-interface.rst. 18 hardware characteristics of the system (reference clock, pulses per 19 fan revolution, ...); Those can be modified via devicetree bindings 25 set desired fan speed. This only makes sense in closed-loop 36 number of pulses per fan revolution. Supported values 44 in closed-loop control mode, if fan RPM value is 25% out 50 speed control (open-loop) via pwm1 described below, 2 for [all …]
H A D	dme1737.rst	18 Addresses scanned: none, address read from Super-I/O config space 34 Addresses scanned: none, address read from Super-I/O config space 43 ----------------- 52 Include non-standard LPC addresses 0x162e and 0x164e 55 - VIA EPIA SN18000 59 ----------- 63 and SCH5127 Super-I/O chips. These chips feature monitoring of 3 temp sensors 64 temp[1-3] (2 remote diodes and 1 internal), 8 voltages in[0-7] (7 external and 65 1 internal) and up to 6 fan speeds fan[1-6]. Additionally, the chips implement 66 up to 5 PWM outputs pwm[1-3,5-6] for controlling fan speeds both manually and [all …]
H A D	g760a.rst	`6 * Global Mixed-mode Technology Inc. G760A 12 http://www.gmt.com.tw/product/datasheet/EDS-760A.pdf 17 ----------- 20 and performs closed-loop control of the fan speed. 23 consecutive speed pulses. The period is defined in terms of clock 31 source and a 2 pulse-per-revolution fan.`
H A D	sysfs-interface.rst	5 through the sysfs interface. Since lm-sensors 3.0.0, libsensors is 6 completely chip-independent. It assumes that all the kernel drivers 10 This is a major improvement compared to lm-sensors 2. 22 For this reason, even if we aim at a chip-independent libsensors, it will 37 Up to lm-sensors 3.0.0, libsensors looks for hardware monitoring attributes 38 in the "physical" device directory. Since lm-sensors 3.0.1, attributes found 46 There is only one value per file, unlike the older /proc specification. 61 to cause an alarm) is chip-dependent. 68 ------------------------------------------------------------------------- 71 `[0-*]` denotes any positive number starting from 0 [all …]
H A D	sl28cpld.rst	`1 .. SPDX-License-Identifier: GPL-2.0-only 17 ----------- 30 ------------- 35 fan1_input Fan RPM. Assuming 2 pulses per revolution.`
H A D	smsc47b397.rst	6 * SMSC LPC47B397-NC 8 * SMSC SCH5307-NS 20 - Mark M. Hoffman <mhoffman@lightlink.com> 21 - Utilitek Systems, Inc. 25 The following specification describes the SMSC LPC47B397-NC [1]_ sensor chip 27 provided by Craig Kelly (In-Store Broadcast Network) and edited/corrected 30 .. [1] And SMSC SCH5307-NS and SCH5317, which have different device IDs but are 33 ------------------------------------------------------------------------- 36 ------------------------------------------------------------------------- 87 -------------------------------------- [all …]
/OK3568_Linux_fs/kernel/drivers/hwmon/
H A D	axi-fan-control.c	1 // SPDX-License-Identifier: GPL-2.0 9 #include <linux/fpga/adi-axi-common.h> 46 /* pulses per revolution / 56 iowrite32(val, ctl->base + reg); in axi_iowrite() 62 return ioread32(ctl->base + reg); in axi_ioread() 99 TACH = 60/(ppr * rpm), where rpm is revolutions per second in axi_fan_control_get_fan_rpm() 100 * and ppr is pulses per revolution. in axi_fan_control_get_fan_rpm() 105 return DIV_ROUND_CLOSEST(60 * ctl->clk_rate, ctl->ppr * tach); in axi_fan_control_get_fan_rpm() 118 * T = (ADC * 501.3743 / 2^bits) - 273.6777 in axi_fan_control_read_temp() 122 val = ((raw_temp 501374) >> 16) - 273677; in axi_fan_control_read_temp() [all …]
H A D	g762.c	1 // SPDX-License-Identifier: GPL-2.0-or-later 3 * g762 - Driver for the Global Mixed-mode Technology Inc. fan speed 15 * http://natisbad.org/NAS/refs/GMT_EDS-762_763-080710-0.2.pdf 27 * http://www.gmt.com.tw/product/datasheet/EDS-762_3.pdf 36 #include <linux/hwmon-sysfs.h> 67 #define G762_REG_FAN_CMD1_FAN_MODE 0x10 /* fan mode: closed/open-loop / 71 #define G762_REG_FAN_CMD1_PULSE_PER_REV 0x01 / pulse per fan revolution / 91 / Register data is read (and cached) at most once per second. / 95 Extract pulse count per fan revolution value (2 or 4) from given 131 u8 set_cnt; /* controls fan rotation speed in closed-loop mode */ [all …]
H A D	pwm-fan.c	1 // SPDX-License-Identifier: GPL-2.0-or-later 3 * pwm-fan.c - Hwmon driver for fans connected to PWM lines. 11 #include <linux/hwmon-sysfs.h> 37 atomic_t pulses; member 58 atomic_inc(&ctx->pulses); in pulse_handler() 66 unsigned int delta = ktime_ms_delta(ktime_get(), ctx->sample_start); in sample_timer() 67 int pulses; in sample_timer() local 70 pulses = atomic_read(&ctx->pulses); in sample_timer() 71 atomic_sub(pulses, &ctx->pulses); in sample_timer() 72 ctx->rpm = (unsigned int)(pulses * 1000 * 60) / in sample_timer() [all …]
H A D	sl28cpld-hwmon.c	1 // SPDX-License-Identifier: GPL-2.0-only 43 ret = regmap_read(hwmon->regmap, hwmon->offset + FAN_INPUT, in sl28cpld_hwmon_read() 57 * says we should asssume 2 pulses per revolution. in sl28cpld_hwmon_read() 63 return -EOPNOTSUPP; in sl28cpld_hwmon_read() 101 if (!pdev->dev.parent) in sl28cpld_hwmon_probe() 102 return -ENODEV; in sl28cpld_hwmon_probe() 104 hwmon = devm_kzalloc(&pdev->dev, sizeof(*hwmon), GFP_KERNEL); in sl28cpld_hwmon_probe() 106 return -ENOMEM; in sl28cpld_hwmon_probe() 108 hwmon->regmap = dev_get_regmap(pdev->dev.parent, NULL); in sl28cpld_hwmon_probe() 109 if (!hwmon->regmap) in sl28cpld_hwmon_probe() [all …]
H A D	max6639.c	1 // SPDX-License-Identifier: GPL-2.0-or-later 3 * max6639.c - Support for Maxim MAX6639 5 * 2-Channel Temperature Monitor with Dual PWM Fan-Speed Controller 19 #include <linux/hwmon-sysfs.h> 83 u8 temp_therm[2]; /* THERM Temperature, 0..255 C (->_max) / 84 u8 temp_alert[2]; / ALERT Temperature, 0..255 C (->_crit) / 85 u8 temp_ot[2]; / OT Temperature, 0..255 C (->_emergency) / 88 u8 ppr; / Pulses per rotation 0..3 for 1..4 ppr / 95 struct i2c_client client = data->client; in max6639_update_device() 100 mutex_lock(&data->update_lock); in max6639_update_device() [all …]
H A D	max6650.c	1 // SPDX-License-Identifier: GPL-2.0-or-later 3 * max6650.c - Part of lm_sensors, Linux kernel modules for hardware 18 * http://pdfserv.maxim-ic.com/en/ds/MAX6650-MAX6651.pdf 27 #include <linux/hwmon-sysfs.h> 91 /* Minimum and maximum values of the FAN-RPM / 143 Useful range for dac is 0-180 for 12V fans and 0-76 for 5V fans. in dac_to_pwm() 146 return clamp_val(255 - (255 * dac) / DAC_LIMIT(v12), 0, 255); in dac_to_pwm() 153 return limit - (limit * pwm) / 255; in pwm_to_dac() 159 struct i2c_client *client = data->client; in max6650_update_device() 163 mutex_lock(&data->update_lock); in max6650_update_device() [all …]
H A D	dme1737.c	1 // SPDX-License-Identifier: GPL-2.0-or-later 3 * dme1737.c - Driver for the SMSC DME1737, Asus A8000, SMSC SCH311x, SCH5027, 4 * and SCH5127 Super-I/O chips integrated hardware monitoring 24 #include <linux/hwmon-sysfs.h> 25 #include <linux/hwmon-vid.h> 46 "Include probing of non-standard LPC addresses"); 55 /* --------------------------------------------------------------------- 61 * -------- ------------ 71 * --------------------------------------------------------------------- / 73 / Voltages (in) numbered 0-7 (ix) */ [all …]