[U-Boot] [PATCH v4 2/6] serial: add UniPhier serial driver

[Masahiro Yamada <yamada.m@jp.panasonic.com>]

Hi Simon,



On Fri, 5 Sep 2014 10:41:54 -0600
Simon Glass <sjg@chromium.org> wrote:
> Do you think we could use driver model instead? We have the serial
> infrastructure in place and I will likely merge it next week.
> 
> It moves the \r\n logic to a higher level.
> 
> It also removes the need for all the horrible #define stuff you have
> here to deal with multiple serial ports.




I am seeing serial_find_console_or_panic() func
in drivers/serial/serial-uclass.c


static void serial_find_console_or_panic(void)
{
	int node;

	/* Check for a chosen console */
	node = fdtdec_get_chosen_node(gd->fdt_blob, "stdout-path");
	if (node < 0)
		node = fdtdec_get_alias_node(gd->fdt_blob, "console");
	if (!uclass_get_device_by_of_offset(UCLASS_SERIAL, node, &cur_dev))
		return;

	/*
	 * If the console is not marked to be bound before relocation, bind
	 * it anyway.
	 */
	if (node > 0 &&
	    !lists_bind_fdt(gd->dm_root, gd->fdt_blob, node, &cur_dev)) {
		if (!device_probe(cur_dev))
			return;
		cur_dev = NULL;
	}





It looks like CONFIG_DM_SERIAL depends on CONFIG_OF_CONTROL.


UniPhier SoCs do not support device tree control.
Is the driver model serial still available?
What will happen if gd->fdt_blob is not set?



Best Regards
Masahiro Yamada