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/openbmc/linux/Documentation/hwmon/
H A Ducd9000.rst39 interrupts, cascading, or other system functions. Twelve of these pins offer PWM
41 margining, and general-purpose PWM functions.
47 functions. Twelve of these pins offer PWM functionality. Using these pins, the
48 UCD90160 offers support for margining, and general-purpose PWM functions.
60 functions. Ten of these pins offer PWM functionality. Using these pins, the
61 UCD9090 offers support for margining, and general-purpose PWM functions.
H A Dpc87360.rst45 PWM control circuitry for two fans. The PC87363 chip is similar, and the
46 PC87364 chip has monitoring and PWM control for a third fan.
111 PWM (pulse width modulation) values range from 0 to 255, with 0 meaning
114 Be extremely careful when changing PWM values. Low PWM values, even
116 hardware if temperature increases too much. When changing PWM values, go
119 One user reported problems with PWM. Changing PWM values would break fan
H A Df71882fg.rst125 These chips also have fan controlling features, using either DC or PWM, in
142 Both PWM (pulse-width modulation) and DC fan speed control methods are
153 There are 2 modes to specify the speed of the fan, PWM duty cycle (or DC
172 chips, and some modes may only be available in RPM / PWM mode.
176 You ask for a specific PWM duty cycle / DC voltage or a specific % of
185 Fan/PWM channel 3 of the F8000 is always in this mode!
H A Dadm1026.rst46 an analog output and a PWM output along with limit, alarm and mask bits for
87 temperature sensor inputs. Both the PWM output and the DAC output can be
89 used. Write the minimum PWM or DAC value to the appropriate control
94 controlling fan speed with the PWM and DAC outputs. The fan speed sensors
95 do not have PWM compensation, so it is probably best to control the fan
H A Dlm63.rst80 A PWM output can be used to control the speed of the fan. The LM63 has two
81 PWM modes: manual and automatic. Automatic mode is not fully implemented yet
82 (you cannot define your custom PWM/temperature curve), and mode change isn't
94 and better PWM resolution. For LM96163, the external temperature sensor type is
H A Dw83781d.rst199 - Revision 2 seems to have 2 PWM registers but we don't know
231 - PWM clock registers:
406 PWM subsection
409 * Additional info about PWM on the AS99127F (may apply to other Asus
412 AS99127F revision 2 seems to have two PWM registers at 0x59 and 0x5A,
417 0x5B, but PWM registers have no effect.
443 you usually get with PWM.
449 long as we don't know more, the w83781d driver doesn't handle PWM on
452 * Additional info about PWM on the AS99127F rev.1 by Hector Martin:
480 * Additional info about PWM on the AS99127F rev.1 from lm-sensors
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H A Demc6w201.rst27 multiple DC fans using three Pulse Width Modulator (PWM) outputs. Note
29 fans to one PWM output. The EMC6W201 will be available in a 36-pin
/openbmc/linux/drivers/pwm/
H A Dpwm-lpss.c26 #define PWM 0x00000000 macro
78 return readl(lpwm->regs + pwm->hwpwm * PWM_SIZE + PWM); in pwm_lpss_read()
85 writel(value, lpwm->regs + pwm->hwpwm * PWM_SIZE + PWM); in pwm_lpss_write()
91 const void __iomem *addr = lpwm->regs + pwm->hwpwm * PWM_SIZE + PWM; in pwm_lpss_wait_for_update()
/openbmc/linux/arch/arm64/boot/dts/allwinner/
H A Dsun50i-a64-pinephone-1.2.dts21 * PWM backlight circuit on this PinePhone revision was changed since 1.0,
22 * and the lowest PWM duty cycle that doesn't lead to backlight being off
/openbmc/u-boot/arch/arm/mach-mediatek/
H A DKconfig22 I2S, PCM, S/PDIF, UART, SPI, I2C, IR TX/RX, and PWM.
32 switch, USB3.0, PCIe, UART, SPI, I2C and PWM.
/openbmc/linux/Documentation/devicetree/bindings/leds/backlight/
H A Dpwm-backlight.yaml34 Delay in ms between setting an initial (non-zero) PWM and enabling the
39 Delay in ms between disabling the backlight using GPIO and setting PWM
46 level (PWM duty cycle) will be interpolated from these values. 0 means a
H A Dlp855x-backlight.yaml48 PWM channel to use for controlling the backlight; setting this
49 enables the PWM-based backlight control mode.
56 PWM period value. Deprecated; set the period value in the pwms
/openbmc/linux/Documentation/devicetree/bindings/timer/
H A Dti,timer-dm.yaml13 The TI dual-mode timer is a general purpose timer with PWM capabilities.
61 Interrupt if available. The timer PWM features may be usable
79 Timer has been wired for PWM capability.
H A Dnxp,tpm-timer.yaml13 The Timer/PWM Module (TPM) supports input capture, output compare,
14 and the generation of PWM signals to control electric motor and power
/openbmc/u-boot/doc/device-tree-bindings/video/
H A Dintel-gma.txt23 - intel,cpu-backlight : Value for CPU Backlight PWM
24 - intel,pch-backlight : Value for PCH Backlight PWM
/openbmc/linux/Documentation/devicetree/bindings/leds/
H A Dleds-pwm-multicolor.yaml7 title: Multi-color LEDs connected to PWM
13 This driver combines several monochrome PWM LEDs into one multi-color
/openbmc/linux/arch/arm/boot/dts/samsung/
H A Dexynos5422-odroidxu4.dts83 * PWM 0 -- fan
84 * PWM 2 -- Blue LED
/openbmc/linux/Documentation/devicetree/bindings/regulator/
H A Drichtek,rt5739.yaml43 0: Auto PFM/PWM mode
44 1: Forced PWM mode
H A Drichtek,rt4803.yaml41 1: Auto PFM/PWM
42 2: Force PWM
/openbmc/linux/arch/arm/boot/dts/nxp/imx/
H A Dimx6ull-colibri-iris-v2.dts95 /* PWM <B> */
101 /* PWM <C> */
/openbmc/linux/Documentation/devicetree/bindings/input/
H A Ddlg,da7280.txt18 2 - PWM data source mode controlled by PWM duty,
41 - pwms : phandle to the physical PWM(Pulse Width Modulation) device.
42 PWM properties should be named "pwms". And number of cell is different
/openbmc/linux/Documentation/driver-api/thermal/
H A Dnouveau_thermal.rst64 Current PWM value (power percentage);
66 The minimum PWM speed allowed;
68 The maximum PWM speed allowed (bypassed when hitting Fan_boost);
/openbmc/linux/Documentation/devicetree/bindings/pwm/
H A Dmediatek,mt2712-pwm.yaml7 title: MediaTek PWM Controller
51 clock for each PWM output.
/openbmc/linux/arch/riscv/boot/dts/allwinner/
H A Dsun20i-d1-dongshan-nezha-stu.dts46 * This regulator is PWM-controlled, but the PWM controller is not
/openbmc/linux/Documentation/devicetree/bindings/hwmon/
H A Dfan-common.yaml44 Select the driving mode of the fan.(DC, PWM and so on)
50 PWM provider.

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