Documentation/devicetree/bindings/serial/rs485.yaml

# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/serial/rs485.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: RS485 serial communications Bindings

description: The RTS signal is capable of automatically controlling
             line direction for the built-in half-duplex mode.
             The properties described hereafter shall be given to a
             half-duplex capable UART node.

maintainers:
  -  Rob Herring <robh@kernel.org>

properties:
  rs485-rts-delay:
    description: prop-encoded-array <a b>
    allOf:
      - $ref: /schemas/types.yaml#/definitions/uint32-array
      - items:
          items:
            - description:
                Delay between rts signal and beginning of data sent in milliseconds.
                It corresponds to the delay before sending data.
              default: 0
              maximum: 1000
            - description:
                Delay between end of data sent and rts signal in milliseconds.
                It corresponds to the delay after sending data and actual release of the line.
              default: 0
              maximum: 1000

  rs485-rts-active-low:
    description: drive RTS low when sending (default is high).
    $ref: /schemas/types.yaml#/definitions/flag

  linux,rs485-enabled-at-boot-time:
    description: enables the rs485 feature at boot time. It can be disabled later with proper ioctl.
    $ref: /schemas/types.yaml#/definitions/flag

  rs485-rx-during-tx:
   description: enables the receiving of data even while sending data.
   $ref: /schemas/types.yaml#/definitions/flag