On Mon, 18 May 2020 16:45:01 +0200, Lukas Wunner wrote:
> Commit e8759ad17d41 ("serial: uapi: Add support for bus termination")
> introduced the ability to enable rs485 bus termination from user space.
> So far the feature is only used by a single driver, 8250_exar.c, using a
> hardcoded GPIO pin specific to Siemens IOT2040 products.
>
> Provide for a more generic solution by allowing specification of an
> rs485 bus termination GPIO pin in the device tree. An upcoming commit
> implements support for this pin for any 8250 driver. The binding is
> used in device trees of the "Revolution Pi" PLCs offered by KUNBUS.
>
> [Heiko Stuebner converted the binding to YAML, hence his Signed-off-by.]
>
> Signed-off-by: Heiko Stuebner <heiko.stuebner@xxxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Lukas Wunner <lukas@xxxxxxxxx>
> Cc: Jan Kiszka <jan.kiszka@xxxxxxxxxxx>
> ---
> Documentation/devicetree/bindings/serial/rs485.yaml | 4 ++++
> 1 file changed, 4 insertions(+)
>
Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
