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Diffstat (limited to 'Documentation/devicetree/bindings/serial/rs485.yaml')
| -rw-r--r-- | Documentation/devicetree/bindings/serial/rs485.yaml | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/serial/rs485.yaml b/Documentation/devicetree/bindings/serial/rs485.yaml new file mode 100644 index 000000000000..d4beaf11222d --- /dev/null +++ b/Documentation/devicetree/bindings/serial/rs485.yaml @@ -0,0 +1,45 @@ +# 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 |