Re: [PATCH v2 2/3] ARM: dts: socfpga: fpga bridges bindings docs

Pantelis Antoniou
2014-10-27T17:21:32Z

Hi Mark,

> On Oct 27, 2014, at 19:17 , Mark Brown <broonie@kernel.org> wrote:
>
> On Mon, Oct 27, 2014 at 05:45:03PM +0200, Pantelis Antoniou wrote:
>
> Please fix your mail client to word wrap at less than 80 columns.
>
>> Well, it’s not my speciality, but my understanding is that FPGAs take (considerable)
>> time to be programmed. If someone has already configured the ‘bus’ it is considered
>> a win to not reload the bitstream. I.e. if you boot with the bootloader having loaded
>> the bitstream already, you don’t want to do it again.
>
> That's not what your property is saying, though - if it were just about
> handover between the bootloader and the kernel that'd be one thing but
> it's also got this additional possibility to instruct the kernel that
> the device must be either disabled or explicitly programmed. Having a
> property that just says "this FPGA is programmed" covers the handover
> case but this property does more than that.

It’s not my property. This is not my driver. The property is badly-named
as it is IMHO.

Why don’t we let Alan chime in?

Regards

— Pantelis