cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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parallax-ping.yaml (1771B)

      1# SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause)
      2%YAML 1.2
      3---
      4$id: http://devicetree.org/schemas/iio/proximity/parallax-ping.yaml#
      5$schema: http://devicetree.org/meta-schemas/core.yaml#
      6
      7title: Parallax PING))) and LaserPING range finder
      8
      9maintainers:
     10  - Andreas Klinger <ak@it-klinger.de>
     11
     12description: |
     13  Bit-banging driver using one GPIO:
     14  - ping-gpios is raised by the driver to start measurement
     15  - direction of ping-gpio is then switched into input with an interrupt
     16    for receiving distance value as PWM signal
     17
     18  Specifications about the devices can be found at:
     19  http://parallax.com/sites/default/files/downloads/28041-LaserPING-2m-Rangefinder-Guide.pdf
     20  http://parallax.com/sites/default/files/downloads/28015-PING-Documentation-v1.6.pdf
     21
     22properties:
     23  compatible:
     24    enum:
     25      - parallax,ping
     26      - parallax,laserping
     27
     28  ping-gpios:
     29    description:
     30      Definition of the GPIO for the triggering and echo (output and input)
     31      This GPIO is set for about 5 us by the driver to tell the device it
     32      should initiate the measurement cycle. Afterwards the GPIO is switched
     33      to input direction with an interrupt. The device sets it and the
     34      length of the input signal corresponds to the measured distance.
     35      It needs to be an GPIO which is able to deliver an interrupt because
     36      the time between two interrupts is measured in the driver.
     37      See Documentation/devicetree/bindings/gpio/gpio.txt for information
     38      on how to specify a consumer gpio.
     39    maxItems: 1
     40
     41required:
     42  - compatible
     43  - ping-gpios
     44
     45additionalProperties: false
     46
     47examples:
     48  - |
     49    #include <dt-bindings/gpio/gpio.h>
     50    proximity {
     51        compatible = "parallax,laserping";
     52        ping-gpios = <&gpio0 26 GPIO_ACTIVE_HIGH>;
     53    };