[PATCH] ARM: PL011: add support for extended FIFO-size of PL011-r1p5

[Jongsung Kim]

Stephen Warren <swarren at wwwdotorg.org> :
>> All r1p5 have 32-byte FIFO depth and it's not configurable. From the
PL011
>> TRM:
>> 
>> r1p4-r1p5	Contains the following differences in functionality:
>> 		* The receive and transmit FIFOs are increased to a depth of
32.
>> 		* The Revision field in the UARTPeriphID2 Register on page
3-24
>> 		  bits [7:4] now reads back as 0x3.
>
> Well, that certainly isn't true in practice. I think we should revert
> this commit until we can determine what the problem is.

I asked to the ARM support about this. Waiting for reply..