serial: imx: implement rts delaying for rs485

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This adds support for delays between assertion of RTS (which is supposed
to enable the rs485 transmitter) and sending as well as between the last
send char and deassertionof RTS.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20200714093012.21621-2-uwe@kleine-koenig.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Uwe Kleine-König 2020-07-14 11:30:11 +02:00 • committed by Greg Kroah-Hartman

parent 23a98b6eb8

commit cb1a609236

1 changed files with 121 additions and 36 deletions

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159

drivers/tty/serial/imx.c

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