rs485.yaml

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    1 # SPDX-License-Identifier: GPL-2.0
    2 %YAML 1.2
    3 ---
    4 $id: http://devicetree.org/schemas/serial/rs485.yaml#
    5 $schema: http://devicetree.org/meta-schemas/core.yaml#
    6 
    7 title: RS485 serial communications Bindings
    8 
    9 description: The RTS signal is capable of automatically controlling line
   10   direction for the built-in half-duplex mode. The properties described
   11   hereafter shall be given to a half-duplex capable UART node.
   12 
   13 maintainers:
   14   - Rob Herring <robh@kernel.org>
   15 
   16 properties:
   17   rs485-rts-delay:
   18     description: prop-encoded-array <a b>
   19     $ref: /schemas/types.yaml#/definitions/uint32-array
   20     items:
   21       items:
   22         - description: Delay between rts signal and beginning of data sent in
   23             milliseconds. It corresponds to the delay before sending data.
   24           default: 0
   25           maximum: 100
   26         - description: Delay between end of data sent and rts signal in milliseconds.
   27             It corresponds to the delay after sending data and actual release
   28             of the line.
   29           default: 0
   30           maximum: 100
   31 
   32   rs485-rts-active-low:
   33     description: drive RTS low when sending (default is high).
   34     $ref: /schemas/types.yaml#/definitions/flag
   35 
   36   rs485-rx-active-high:
   37     description: Polarity of receiver enable signal (when separate from RTS).
   38       True indicates active high (default is low).
   39     $ref: /schemas/types.yaml#/definitions/flag
   40 
   41   linux,rs485-enabled-at-boot-time:
   42     description: enables the rs485 feature at boot time. It can be disabled
   43       later with proper ioctl.
   44     $ref: /schemas/types.yaml#/definitions/flag
   45 
   46   rs485-rx-during-tx:
   47     description: enables the receiving of data even while sending data.
   48     $ref: /schemas/types.yaml#/definitions/flag
   49 
   50   rs485-term-gpios:
   51     description: GPIO pin to enable RS485 bus termination.
   52     maxItems: 1
   53 
   54 additionalProperties: true
   55 
   56 ...

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/Bindings/serial/rs485.yaml

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/serial/rs485.yaml