[PATCH 1/4] dt_bindings: rs485: Add binding for GPIO that controls Rx enable during Tx

[Christoph Niedermaier]

Add the binding for a generic definition of a GPIO, that controls whether Rx
is connected or disconnected by an electrical circuit to have the ability
to receive the signals on the bus during sending or disable receiving during
sending.

Signed-off-by: Christoph Niedermaier <cniedermaier at dh-electronics.com>
---
Cc: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
Cc: Rob Herring <robh+dt at kernel.org>
Cc: Krzysztof Kozlowski <krzysztof.kozlowski+dt at linaro.org>
Cc: Marek Vasut <marex at denx.de>
Cc: devicetree at vger.kernel.org
To: linux-serial at vger.kernel.org
To: linux-arm-kernel at lists.infradead.org
---
 Documentation/devicetree/bindings/serial/rs485.yaml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/serial/rs485.yaml b/Documentation/devicetree/bindings/serial/rs485.yaml
index 90a1bab40f05..0ebd7690f85d 100644
--- a/Documentation/devicetree/bindings/serial/rs485.yaml
+++ b/Documentation/devicetree/bindings/serial/rs485.yaml
@@ -51,6 +51,10 @@ properties:
     description: GPIO pin to enable RS485 bus termination.
     maxItems: 1
 
+  rs485-rx-during-tx-gpios:
+    description: GPIO pin to control RS485 Rx enable during Tx.
+    maxItems: 1
+
 additionalProperties: true
 
 ...
-- 
2.11.0