Lukas Wunner 01c38ecff8 dt-bindings: serial: Add binding for rs485 bus termination GPIO ... Commit e8759ad17d ("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@theobroma-systems.com> Signed-off-by: Lukas Wunner <lukas@wunner.de> Cc: Jan Kiszka <jan.kiszka@siemens.com> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/4f4411895dc52c846f766e7f7207ec412c4811b6.1589811297.git.lukas@wunner.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-05-29 12:42:53 +02:00
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bindings	dt-bindings: serial: Add binding for rs485 bus termination GPIO	2020-05-29 12:42:53 +02:00
booting-without-of.txt
changesets.txt
dynamic-resolution-notes.txt
of_unittest.txt
overlay-notes.txt
usage-model.txt
writing-schema.rst	kbuild: allow to run dt_binding_check and dtbs_check in a single command	2020-03-13 10:04:36 +09:00