diff options
| author | Daniel Golle <daniel@makrotopia.org> | 2020-02-21 22:23:31 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-03-06 13:26:26 +0100 |
| commit | 9be1064fe524b396cca449b2fe4252b7919a245f (patch) | |
| tree | df938963d6007ba029a80a40ecf8b8487b9c0477 /drivers/tty/serial/Kconfig | |
| parent | 9fa3c4b1fa379f2b55859c6d27ba0563aac06516 (diff) | |
serial: ar933x_uart: add RS485 support
Emulate half-duplex operation and use mctrl_gpio to add support for
RS485 tranceiver with transmit/receive switch hooked to RTS GPIO line.
This is needed to make use of the RS485 port found on Teltonika RUT955.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
Link: https://lore.kernel.org/r/20200221212331.GA21467@makrotopia.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/Kconfig')
| -rw-r--r-- | drivers/tty/serial/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig index 880b96201530..e71af33f8d80 100644 --- a/drivers/tty/serial/Kconfig +++ b/drivers/tty/serial/Kconfig @@ -1269,6 +1269,7 @@ config SERIAL_AR933X tristate "AR933X serial port support" depends on HAVE_CLK && ATH79 select SERIAL_CORE + select SERIAL_MCTRL_GPIO if GPIOLIB help If you have an Atheros AR933X SOC based board and want to use the built-in UART of the SoC, say Y to this option. |