pwm-vibrator.yaml

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    1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
    2 %YAML 1.2
    3 ---
    4 $id: "http://devicetree.org/schemas/input/pwm-vibrator.yaml#"
    5 $schema: "http://devicetree.org/meta-schemas/core.yaml#"
    6 
    7 title: PWM vibrator
    8 
    9 maintainers:
   10   - Sebastian Reichel <sre@kernel.org>
   11 
   12 description: >
   13   Registers a PWM device as vibrator. It is expected, that the vibrator's
   14   strength increases based on the duty cycle of the enable PWM channel
   15   (100% duty cycle meaning strongest vibration, 0% meaning no vibration).
   16 
   17   The binding supports an optional direction PWM channel, that can be
   18   driven at fixed duty cycle. If available this is can be used to increase
   19   the vibration effect of some devices.
   20 
   21 properties:
   22   compatible:
   23     const: pwm-vibrator
   24 
   25   pwm-names:
   26     items:
   27       - const: enable
   28       - const: direction
   29     minItems: 1
   30 
   31   pwms:
   32     minItems: 1
   33     maxItems: 2
   34 
   35   vcc-supply: true
   36 
   37   direction-duty-cycle-ns:
   38     description: >
   39       Duty cycle of the direction PWM channel in nanoseconds,
   40       defaults to 50% of the channel's period.
   41 
   42 required:
   43   - compatible
   44   - pwm-names
   45   - pwms
   46 
   47 additionalProperties: false
   48 
   49 examples:
   50   - |
   51     vibrator {
   52         compatible = "pwm-vibrator";
   53         pwms = <&pwm9 0 1000000000 0>,
   54                <&pwm8 0 1000000000 0>;
   55         pwm-names = "enable", "direction";
   56         direction-duty-cycle-ns = <1000000000>;
   57     };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/input/pwm-vibrator.yaml

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/input/pwm-vibrator.yaml