[version 2] amba uarts - arm type uarts fifo size provided by device tree

[jorge.ramirez-ortiz@linaro.org (Jorge Ramirez-Ortiz)]

On 03/03/2015 11:55 AM, Mark Rutland wrote:
> On Wed, Feb 18, 2015 at 08:07:47PM +0000, Jorge Ramirez-Ortiz wrote:
>> [PATCH 1/2] Documentation: bindings: add optional fifo size property
>> [PATCH 2/2] drivers/tty: pl011: read fifo size from OF if present [updated]
>>
>> These patches aim at resolving an issue present on some of the amba pl011 uarts.
>>
>> They were developed for the Hisilicon Hi6220 SoC where the fifo size on the
>> uarts is 64 despite the amba revision having been set to 1. 
> Are we certain that the FIFO length is the only difference between the
> HI6220 PL011 and a regular PL011?

you were right.

I just confirmed that there are a number of differences on top of the fifo size
requiring many additional software changes.
This is not great news since the uart announces itself as vendor_arm version 1.

so please discard this patch.

>
> It may be worth adding a compatible string in addition, just in case.
>
> Mark.