RE: [PATCH] booting-without-of: add Xilinx uart 16550.

quoted

Instead of attempting to come up with a generic description
of this, I recommend just naming it after the actual device

instance;

quoted

something like compatible=3D"xlnx,opb-uart16550";

=20
    Well, that means that we'll need a to add a code which "glues" the

chip to

8250.c driver... well, of_serial.c could be that glue layer if we add

to it

the ability to recognize Xilinx UART... well, legacy_serial.c could be

taught

that trick too...
    Well, we could also add the new compatible, but still claim

"ns16550"

compatibility...

This actually makes more sense to me...  I'd rather have the code set
the reg-shift than have it explicitly set in the device tree anyway.
The compatibility set should include (at the least):

      opb_uart16550_v1_00_c
      opb_uart16550_v1_00_d
      opb_uart16550_v1_00_e
      plb_uart16550_v1_00_c
      xps_uart16550_v1_00_a

I think this is somewhat independent of Sergei's arguments that generic
ns16550 devices should allow having a reg-shift set....

Steve