serial: s5p: get the port id number from the alias of the device node

The port id, if not specified in the device node, can be obtained from
the alias of the device node listed in the aliases node.

Cc: Minkyu Kang <mk7.kang@samsung.com>
Signed-off-by: Thomas Abraham <thomas.ab@samsung.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

diff --git a/drivers/serial/serial_s5p.c b/drivers/serial/serial_s5p.c
index feba467d809452447f07bd2973621d4cb945baa0..8590dfd418a34d3588a766cc15e2bddf9119ab29 100644 (file)
--- a/drivers/serial/serial_s5p.c
+++ b/drivers/serial/serial_s5p.c
@@ -174,8 +174,8 @@ static int s5p_serial_ofdata_to_platdata(struct udevice *dev)
                return -EINVAL;
 
        plat->reg = (struct s5p_uart *)addr;
-       plat->port_id = fdtdec_get_int(gd->fdt_blob, dev->of_offset, "id", -1);
-
+       plat->port_id = fdtdec_get_int(gd->fdt_blob, dev->of_offset,
+                                       "id", dev->seq);
        return 0;
 }