| /freebsd/sys/contrib/device-tree/Bindings/pwm/ |
| H A D | mxs-pwm.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/pwm/mxs-pwm.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Freescale MXS PWM controller
10 - Shawn Guo <shawnguo@kernel.org>
13 - $ref: pwm.yaml#
18 - const: fsl,imx23-pwm
19 - items:
20 - enum:
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| H A D | pwm.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/pwm/pwm.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: PWM controllers (providers)
10 - Thierry Reding <thierry.reding@gmail.com>
16 pattern: "^pwm(@.*|-([0-9]|[1-9][0-9]+))?$"
18 "#pwm-cells":
20 Number of cells in a PWM specifier. Typically the cells represent, in
21 order: the chip-relative PWM number, the PWM period in nanoseconds and
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| H A D | snps,dw-apb-timers-pwm2.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 ---
5 $id: http://devicetree.org/schemas/pwm/snps,dw-apb-timers-pwm2.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
8 title: Synopsys DW-APB timers PWM controller
11 - Ben Dooks <ben.dooks@sifive.com>
14 This describes the DesignWare APB timers module when used in the PWM
16 control the functionality, the number of PWMs available and other
20 instead of having to encode the IP version number in the device tree
24 - $ref: pwm.yaml#
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| H A D | pwm-st.txt | 1 STMicroelectronics PWM driver bindings
2 --------------------------------------
5 - compatible : "st,pwm"
6 - #pwm-cells : Number of cells used to specify a PWM. First cell
7 specifies the per-chip index of the PWM to use and the
8 second cell is the period in nanoseconds - fixed to 2
10 - reg : Physical base address and length of the controller's
12 - pinctrl-names: Set to "default".
13 - pinctrl-0: List of phandles pointing to pin configuration nodes
14 for PWM module.
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| H A D | pwm.txt | 1 Specifying PWM information for devices
4 1) PWM user nodes
5 -----------------
7 PWM users should specify a list of PWM devices that they want to use
8 with a property containing a 'pwm-list':
10 pwm-list ::= <single-pwm> [pwm-list]
11 single-pwm ::= <pwm-phandle> <pwm-specifier>
12 pwm-phandle : phandle to PWM controller node
13 pwm-specifier : array of #pwm-cells specifying the given PWM
16 PWM properties should be named "pwms". The exact meaning of each pwms
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| H A D | pwm-lp3943.txt | 1 TI/National Semiconductor LP3943 PWM controller
4 - compatible: "ti,lp3943-pwm"
5 - #pwm-cells: Should be 2. See pwm.yaml in this directory for a
9 - ti,pwm0 or ti,pwm1: Output pin number(s) for PWM channel 0 or 1.
17 PWM 0 is for RGB LED brightness control
18 PWM 1 is for brightness control of LP8557 backlight device
26 * PWM 0 : output 8, 9 and 10
27 * PWM 1 : output 15
29 pwm3943: pwm {
30 compatible = "ti,lp3943-pwm";
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| H A D | pwm-gpio.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/pwm/pwm-gpio.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Generic software PWM for modulating GPIOs
10 - Stefan Wahren <wahrenst@gmx.net>
13 - $ref: pwm.yaml#
17 const: pwm-gpio
19 "#pwm-cells":
22 See pwm.yaml in this directory for a description of the cells format.
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| /freebsd/share/man/man4/ |
| H A D | pwmc.4 | 30 .Nd PWM (Pulse Width Modulation) control device driver
35 .Bd -ragged -offset indent
43 .Bd -literal -offset indent
49 driver provides device-control access to a channel of PWM hardware.
52 device is associated with a single PWM output channel.
54 Some PWM hardware is organized with multiple channels sharing a
61 Consult the documentation for the underlying PWM hardware device driver
67 .Pa /dev/pwm/pwmcX.Y
70 is a sequential number assigned to each PWM hardware controller
73 is the channel number within that hardware controller.
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| /freebsd/usr.sbin/pwm/ |
| H A D | pwm.8 | 27 .Nm pwm
28 .Nd configure PWM (Pulse Width Modulation) hardware
42 utility can be used to configure pwm hardware.
47 Some PWM hardware supports multiple output channels within a single
50 instance controls a single PWM channel.
54 .Pa /dev/pwm/pwmcX.Y ,
57 is the controller unit number and
59 is the channel number within that unit.
62 .Bl -tag -width "-f device"
66 .Pa /dev/pwm/pwmc0.0
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| /freebsd/sys/contrib/device-tree/Bindings/hwmon/ |
| H A D | npcm750-pwm-fan.txt | 1 Nuvoton NPCM PWM and Fan Tacho controller device
3 The Nuvoton BMC NPCM7XX supports 8 Pulse-width modulation (PWM)
6 The Nuvoton BMC NPCM8XX supports 12 Pulse-width modulation (PWM)
9 Required properties for pwm-fan node
10 - #address-cells : should be 1.
11 - #siz
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| H A D | aspeed-pwm-tacho.txt | 1 ASPEED AST2400/AST2500 PWM and Fan Tacho controller device driver
3 The ASPEED PWM controller can support upto 8 PWM outputs. The ASPEED Fan Tacho
6 There can be upto 8 fans supported. Each fan can have one PWM output and
9 Required properties for pwm-tacho node:
10 - #address-cells : should be 1.
12 - #size-cell
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| H A D | pwm-fan.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/hwmon/pwm-fan.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Fan connected to PWM lines
10 - Jean Delvare <jdelvare@suse.com>
11 - Guenter Roeck <linux@roeck-us.net>
15 const: pwm-fan
17 cooling-levels:
18 description: PWM duty cycle values corresponding to thermal cooling states.
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| H A D | adt7475.yaml | 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Jean Delvare <jdelvare@suse.com>
23 https://www.onsemi.com/pub/Collateral/ADT7473-D.PDF
24 https://www.onsemi.com/pub/Collateral/ADT7475-D.PDF
25 https://www.onsemi.com/pub/Collateral/ADT7476-D.PDF
26 https://www.onsemi.com/pub/Collateral/ADT7490-D.PDF
34 - adi,adt7473
35 - adi,adt7475
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| /freebsd/sys/contrib/device-tree/Bindings/gpio/ |
| H A D | gpio-mvebu.txt | 5 - compatible : Should be "marvell,orion-gpio", "marvell,mv78200-gpio",
6 "marvell,armadaxp-gpio" or "marvell,armada-8k-gpio".
8 "marvell,orion-gpio" should be used for Orion, Kirkwood, Dove,
9 Discovery (except MV78200) and Armada 370. "marvell,mv78200-gpio"
12 "marvel,armadaxp-gpio" should be used for all Armada XP SoCs
15 "marvell,armada-8k-gpio" should be used for the Armada 7K and 8K
17 Documentation/devicetree/bindings/arm/marvell/ap80x-system-controller.txt
20 - reg: Address and length of the register set for the device. Only one
21 entry is expected, except for the "marvell,armadaxp-gpio" variant
23 one for the per-cpu registers. Not used for marvell,armada-8k-gpio.
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| H A D | gpio-mvebu.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/gpio/gpio-mvebu.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
11 - Andrew Lunn <andrew@lunn.ch>
16 - enum:
17 - marvell,armada-8k-gpio
18 - marvell,orion-gpio
20 - items:
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| /freebsd/sys/contrib/device-tree/Bindings/pinctrl/ |
| H A D | pinctrl-mt7622.txt | 4 - compatible: Should be one of the following
5 "mediatek,mt7622-pinctrl" for MT7622 SoC
6 "mediatek,mt7629-pinctrl" for MT7629 SoC
7 - reg: offset and length of the pinctrl space
9 - gpio-controller: Marks the device node as a GPIO controller.
10 - #gpio-cells: Should be two. The first cell is the pin number and the
14 - interrupt-controller : Marks the device node as an interrupt controller
16 If the property interrupt-controller is defined, following property is required
17 - reg-names: A string describing the "reg" entries. Must contain "eint".
18 - interrupts : The interrupt output from the controller.
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| /freebsd/sys/contrib/device-tree/Bindings/leds/backlight/ |
| H A D | pwm-backlight.txt | 1 pwm-backlight bindings
4 - compatible: "pwm-backlight"
5 - pwms: OF device-tree PWM specification (see PWM binding[0])
6 - power-supply: regulator for supply voltage
9 - pwm-names: a list of names for the PWM devices specified in the
10 "pwms" property (see PWM binding[0])
11 - enable-gpios: contains a single GPIO specifier for the GPIO which enables
13 - post-pwm-on-delay-ms: Delay in ms between setting an initial (non-zero) PWM
15 - pwm-off-delay-ms: Delay in ms between disabling the backlight using GPIO
16 and setting PWM value to 0.
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| H A D | pwm-backlight.yaml | 1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
4 $id: http://devicetree.org/schemas/leds/backlight/pwm-backlight.yaml#
5 $schema: http://devicetree.org/meta-schema
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| /freebsd/sys/contrib/device-tree/Bindings/leds/ |
| H A D | leds-qcom-lpg.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/leds/leds-qcom-lpg.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Bjorn Andersson <bjorn.andersson@linaro.org>
20 - enum:
21 - qcom,pm660l-lpg
22 - qcom,pm8150b-lpg
23 - qcom,pm8150l-lpg
24 - qcom,pm8350c-pwm
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| /freebsd/sys/contrib/device-tree/Bindings/input/ |
| H A D | dlg,da7280.txt | 4 - compatible: Should be "dlg,da7280".
5 - reg: Specifies the I2C slave address.
7 - interrupt-parent : Specifies the phandle of the interrupt controller to
10 - dlg,actuator-type: Set Actuator type. it should be one of:
11 "LRA" - Linear Resonance Actuator type.
12 "ERM-bar" - Bar type Eccentric Rotating Mass.
13 "ERM-coin" - Coin type Eccentric Rotating Mass.
15 - dlg,const-op-mode: Haptic operation mode for FF_CONSTANT.
17 1 - Direct register override(DRO) mode triggered by i2c(default),
18 2 - PWM data source mode controlled by PWM duty,
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| /freebsd/sys/contrib/device-tree/Bindings/arm/bcm/ |
| H A D | raspberrypi,bcm2835-firmware.yaml | 1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/arm/bcm/raspberrypi,bcm2835-firmware.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Eric Anholt <eric@anholt.net>
11 - Stefan Wahren <wahrenst@gmx.net>
17 const: raspberrypi,bcm2835-firmware
20 - compatible
25 - const: raspberrypi,bcm2835-firmware
26 - const: simple-mfd
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| /freebsd/sys/contrib/device-tree/Bindings/mfd/ |
| H A D | netronix,ntxec.yaml | 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Jonathan Neuschäfer <j.neuschaefer@gmx.net>
13 This EC is found in e-book readers of multiple brands (e.g. Kobo, Tolino), and
22 - description: The I2C address of the EC
24 system-power-controller:
26 description: See Documentation/devicetree/bindings/power/power-controller.txt
33 "#pwm-cells":
36 Number of cells in a PWM specifier.
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| /freebsd/sys/contrib/device-tree/Bindings/display/ |
| H A D | ssd1307fb.txt | 4 - compatible: Should be "solomon,<chip>fb-<bus>". The only supported bus for
7 - reg: Should contain address of the controller on the I2C bus. Most likely
9 - pwm: Should contain the pwm to use according to the OF device tree PWM
11 - solomon,height: Height in pixel of the screen driven by the controller
12 - solomon,width: Width in pixel of the screen driven by the controller
13 - solomon,page-offset: Offset of pages (band of 8 pixels) that the screen is
17 - reset-gpios: The GPIO used to reset the OLED display, if available. See
19 - vbat-supply: The supply for VBAT
20 - solomon,segment-no-remap: Display needs normal (non-inverted) data column
22 - solomon,col-offset: Offset of columns (COL/SEG) that the screen is mapped to.
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| /freebsd/share/man/man9/ |
| H A D | pwmbus.9 | 38 .Cd "device pwm"
55 The PWMBUS (Pulse-Width Modulation) interface allows a device driver to
63 argument is the duration in nanoseconds of one complete on-off cycle, and the
67 Some PWM hardware is organized as a single controller with multiple channels.
73 Consult the documentation for the underlying PWM hardware device driver for
76 .Bl -tag -width indent
78 Configure the period and duty (in nanoseconds) in the PWM controller on the bus
87 Get the number of channels supported by the controller.
89 Enable the PWM channel.
97 Test whether the PWM channel is enabled.
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| /freebsd/sys/dev/pwm/ |
| H A D | pwmbus_if.m | 1 #-
2 # SPDX-License-Identifier: BSD-2-Clause
51 # Config the period (Total number of cycle in ns) and
52 # the duty (active number of cycle in ns)
62 # Get the period (Total number of cycle in ns) and
63 # the duty (active number of cycle in ns)
91 # Enable the pwm output
100 # Is the pwm output enabled
109 # Get the number of channels
|