diff options
| author | Lucas Stach <dev@lynxeye.de> | 2014-12-05 20:21:57 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-02-03 15:52:13 -0800 |
| commit | 3239fd31d4b6b7e0f5629eb458bd67b719050783 (patch) | |
| tree | 98a47ffa6d4b15d8dcbe7fbe20a9ad41635fff4c /drivers/tty | |
| parent | c3bda295eeb002ac708303350d5776c7fe01a127 (diff) | |
serial: of-serial: fetch line number from DT
The general agreed way to specify a fixed line number
for a serial console is to provide a "serial" alias
in the devicetree. Start parsing this property in
of_serial.
Signed-off-by: Lucas Stach <dev@lynxeye.de>
Acked-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/of_serial.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/tty/serial/of_serial.c b/drivers/tty/serial/of_serial.c index fbb719c89a61..7ff61e24a195 100644 --- a/drivers/tty/serial/of_serial.c +++ b/drivers/tty/serial/of_serial.c @@ -102,6 +102,11 @@ static int of_platform_serial_setup(struct platform_device *ofdev, if (of_property_read_u32(np, "fifo-size", &prop) == 0) port->fifosize = prop; + /* Check for a fixed line number */ + ret = of_alias_get_id(np, "serial"); + if (ret >= 0) + port->line = ret; + port->irq = irq_of_parse_and_map(np, 0); port->iotype = UPIO_MEM; if (of_property_read_u32(np, "reg-io-width", &prop) == 0) { |