[U-Boot] dm: device_id info

[Jagan Teki]

Hi,

I'm exploring internals of dm where I'm just comparing udevice with Linux
model especially on device_id scenarios.

udevice_id - u-boot

Linux:
--------
platform_device_id
of_device_id

spi_device_id
input_device_id
..............
.......
pci_device_id

1. Does this udevice_id is a generic model in u-boot for all variant of devices?
    Bcz Linux defines each devices have own device_id entries.
2. diff of of_device_id vs udevice_id
3. udevice_id vs fdt function calls, suppose If I write a dm driver
where my board doesn't
    have fdt support, is this a valid scenario.
4. Pls- add any info which I haven't covered.

thanks!
-- 
Jagan.