提交 3239fd31 编写于 作者: L Lucas Stach 提交者: Greg Kroah-Hartman

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: NLucas Stach <dev@lynxeye.de>
Acked-by: NOlof Johansson <olof@lixom.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>
上级 c3bda295
......@@ -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) {
......
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