Generic bindings for RS485 feature included in some UARTs.
Those bindings have to be used withing an UART device tree node.
Documentation updated to link to the bindings definition.
Signed-off-by: NNicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: NGrant Likely <grant.likely@secretlab.ca>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

By default the atmel_serial driver in RS485 mode disables receiving data until
all data in the send buffer has been sent. This flag allows to receive data
even whilst sending data.
Signed-off-by: NBernhard Roth <br@pwrnet.de>
Signed-off-by: NClaudio Scordino <claudio@evidence.eu.com>
Acked-by: NAlan Cox <alan@linux.intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Add a notion about 16C950 UART, that is using DTR signal for RS485 mode.
Signed-off-by: NYegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Documentation about RS485 serial communications
Signed-off-by: NClaudio Scordino <claudio@evidence.eu.com>
Acked-by: NRandy Dunlap <randy.dunlap@oracle.com>
Acked-by: NRussell King <linux@arm.linux.org.uk>
Acked-by: NGrant Edwards <grant.b.edwards@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>