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serial: RS485 termination is supported if DT provides one

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When DT provides rs485-term, set termination flag as supported.

Reviewed-by: Lino Sanfilippo <l.sanfilippo@kunbus.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20220704094515.6831-3-ilpo.jarvinen@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ilpo Järvinen 2022-07-04 12:45:15 +03:00 committed by Greg Kroah-Hartman
parent 0139da50dc
commit 8bec874f84
1 changed files with 2 additions and 0 deletions
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2
drivers/tty/serial/serial_core.c
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@ -3409,6 +3409,8 @@ int uart_get_rs485_mode(struct uart_port *port)
port->rs485_term_gpio = NULL;
return dev_err_probe(dev, ret, "Cannot get rs485-term-gpios\n");
}
if (port->rs485_term_gpio)
port->rs485_supported.flags |= SER_RS485_TERMINATE_BUS;
return 0;
}