1d50f974cSBenjamin Gaignard# SPDX-License-Identifier: GPL-2.0 2d50f974cSBenjamin Gaignard%YAML 1.2 3d50f974cSBenjamin Gaignard--- 4d50f974cSBenjamin Gaignard$id: http://devicetree.org/schemas/serial/rs485.yaml# 5d50f974cSBenjamin Gaignard$schema: http://devicetree.org/meta-schemas/core.yaml# 6d50f974cSBenjamin Gaignard 7d50f974cSBenjamin Gaignardtitle: RS485 serial communications Bindings 8d50f974cSBenjamin Gaignard 9d50f974cSBenjamin Gaignarddescription: The RTS signal is capable of automatically controlling 10d50f974cSBenjamin Gaignard line direction for the built-in half-duplex mode. 11d50f974cSBenjamin Gaignard The properties described hereafter shall be given to a 12d50f974cSBenjamin Gaignard half-duplex capable UART node. 13d50f974cSBenjamin Gaignard 14d50f974cSBenjamin Gaignardmaintainers: 15d50f974cSBenjamin Gaignard - Rob Herring <robh@kernel.org> 16d50f974cSBenjamin Gaignard 17d50f974cSBenjamin Gaignardproperties: 18d50f974cSBenjamin Gaignard rs485-rts-delay: 19d50f974cSBenjamin Gaignard description: prop-encoded-array <a b> 20d50f974cSBenjamin Gaignard allOf: 21d50f974cSBenjamin Gaignard - $ref: /schemas/types.yaml#/definitions/uint32-array 22d50f974cSBenjamin Gaignard - items: 23d50f974cSBenjamin Gaignard items: 24d50f974cSBenjamin Gaignard - description: 25d50f974cSBenjamin Gaignard Delay between rts signal and beginning of data sent in milliseconds. 26d50f974cSBenjamin Gaignard It corresponds to the delay before sending data. 27d50f974cSBenjamin Gaignard default: 0 28d50f974cSBenjamin Gaignard maximum: 1000 29d50f974cSBenjamin Gaignard - description: 30d50f974cSBenjamin Gaignard Delay between end of data sent and rts signal in milliseconds. 31d50f974cSBenjamin Gaignard It corresponds to the delay after sending data and actual release of the line. 32d50f974cSBenjamin Gaignard default: 0 33d50f974cSBenjamin Gaignard maximum: 1000 34d50f974cSBenjamin Gaignard 35d50f974cSBenjamin Gaignard rs485-rts-active-low: 36d50f974cSBenjamin Gaignard description: drive RTS low when sending (default is high). 37d50f974cSBenjamin Gaignard $ref: /schemas/types.yaml#/definitions/flag 38d50f974cSBenjamin Gaignard 39d50f974cSBenjamin Gaignard linux,rs485-enabled-at-boot-time: 40d50f974cSBenjamin Gaignard description: enables the rs485 feature at boot time. It can be disabled later with proper ioctl. 41d50f974cSBenjamin Gaignard $ref: /schemas/types.yaml#/definitions/flag 42d50f974cSBenjamin Gaignard 43d50f974cSBenjamin Gaignard rs485-rx-during-tx: 44d50f974cSBenjamin Gaignard description: enables the receiving of data even while sending data. 45d50f974cSBenjamin Gaignard $ref: /schemas/types.yaml#/definitions/flag 46*01c38ecfSLukas Wunner 47*01c38ecfSLukas Wunner rs485-term-gpios: 48*01c38ecfSLukas Wunner description: GPIO pin to enable RS485 bus termination. 49*01c38ecfSLukas Wunner maxItems: 1 50