diff options
Diffstat (limited to 'dts/Bindings/serial/rs485.yaml')
| -rw-r--r-- | dts/Bindings/serial/rs485.yaml | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/dts/Bindings/serial/rs485.yaml b/dts/Bindings/serial/rs485.yaml index f2c9c9fe6a..9418fd66a8 100644 --- a/dts/Bindings/serial/rs485.yaml +++ b/dts/Bindings/serial/rs485.yaml @@ -4,7 +4,7 @@ $id: http://devicetree.org/schemas/serial/rs485.yaml# $schema: http://devicetree.org/meta-schemas/core.yaml# -title: RS485 serial communications Bindings +title: RS485 serial communications description: The RTS signal is capable of automatically controlling line direction for the built-in half-duplex mode. The properties described @@ -22,12 +22,16 @@ properties: - description: Delay between rts signal and beginning of data sent in milliseconds. It corresponds to the delay before sending data. default: 0 - maximum: 1000 + maximum: 100 - 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 + maximum: 100 + + rs485-rts-active-high: + description: drive RTS high when sending (this is the default). + $ref: /schemas/types.yaml#/definitions/flag rs485-rts-active-low: description: drive RTS low when sending (default is high). @@ -51,6 +55,12 @@ properties: description: GPIO pin to enable RS485 bus termination. maxItems: 1 + rs485-rx-during-tx-gpios: + description: Output GPIO pin that sets the state of rs485-rx-during-tx. This + signal can be used to control the RX part of an RS485 transceiver. Thereby + the active state enables RX during TX. + maxItems: 1 + additionalProperties: true ... |