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Commit 1bd83245 authored by Lucas Stach's avatar Lucas Stach Committed by Greg Kroah-Hartman
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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: default avatarLucas Stach <dev@lynxeye.de>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 5d14bba9

drivers/tty/serial/of_serial.c

+4 −0
Original line number Diff line number Diff line
@@ -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) {