diff options
| author | Julien CHAUVEAU <julien.chauveau@neo-technologies.fr> | 2014-11-04 11:45:55 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-11-06 14:57:26 -0800 |
| commit | f77d55a3b56a98d14b6e7dc549c24b33011d175d (patch) | |
| tree | 5b99bdff6bb16f6a9275a1cb513492a1d2eed574 /drivers/tty | |
| parent | 1bd8324535ec1ff44aef55c0e40b9e7d56b310fb (diff) | |
serial: 8250_dw: get index of serial line from DT aliases
Get index of serial line from device tree using function of_alias_get_id().
If no alias is found, the 8250 core takes care of incrementing the line number.
Signed-off-by: Julien CHAUVEAU <julien.chauveau@neo-technologies.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/8250/8250_dw.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c index 73a14ae8f0ae..18ff53298d2f 100644 --- a/drivers/tty/serial/8250/8250_dw.c +++ b/drivers/tty/serial/8250/8250_dw.c @@ -258,6 +258,7 @@ static int dw8250_probe_of(struct uart_port *p, struct uart_8250_port *up = up_to_u8250p(p); u32 val; bool has_ucv = true; + int id; if (of_device_is_compatible(np, "cavium,octeon-3860-uart")) { #ifdef __BIG_ENDIAN @@ -301,6 +302,11 @@ static int dw8250_probe_of(struct uart_port *p, if (!of_property_read_u32(np, "reg-shift", &val)) p->regshift = val; + /* get index of serial line, if found in DT aliases */ + id = of_alias_get_id(np, "serial"); + if (id >= 0) + p->line = id; + /* clock got configured through clk api, all done */ if (p->uartclk) return 0; |