diff options
| author | Lucas Stach <dev@lynxeye.de> | 2014-11-04 01:16:54 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-11-07 01:57:25 +0300 |
| commit | 1bd8324535ec1ff44aef55c0e40b9e7d56b310fb (patch) | |
| tree | d1d547d190757213db41dd9131e94de886bd74b1 /drivers/tty/serial/of_serial.c | |
| parent | 5d14bba91d8c350b21d28834fab95f67a46a264e (diff) | |
| download | linux-1bd8324535ec1ff44aef55c0e40b9e7d56b310fb.tar.xz | |
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/of_serial.c')
| -rw-r--r-- | drivers/tty/serial/of_serial.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/tty/serial/of_serial.c b/drivers/tty/serial/of_serial.c index 8749fb849803..7bc163421be4 100644 --- a/drivers/tty/serial/of_serial.c +++ b/drivers/tty/serial/of_serial.c @@ -102,6 +102,10 @@ 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 */ + if ((ret = of_alias_get_id(np, "serial")) >= 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) { |