Re: [linux-sunxi] Re: [PATCH 1/4] brcmfmac: Add brcm,nvram_file_name dt property

[Kalle Valo <kvalo@codeaurora.org>]

Hans de Goede <hdegoede@redhat.com> writes:

> Hi,
>
> On 30-06-16 11:02, Kalle Valo wrote:
>> Priit Laes <plaes@plaes.org> writes:
>>
>>>> What is the size of this nvram file? As it's board specific, I wonder
>>>> if we can simply include it inside of the DT verbatim. I remember
>>>> doing that (in the pre-dtb days, on real open firmware) for the
>>>> "spidernet"
>>>> ethernet driver.
>>>
>>> It contains a bit too much info:
>>>
>>> This is what CubieTruck requires:
>>>
>>> http://dl.cubieboard.org/public/Cubieboard/benn/firmware/ap6210/nvram_ap6210.txt
>>
>> In the nvram file I see lots of identifiers:
>>
>> manfid=0x2d0
>> prodid=0x492
>> vendid=0x14e4
>> devid=0x4343
>> boardtype=0x0598
>> boardrev=0x1307
>> boardnum=777
>>
>> Are any of these (or a combination of them) unique for each board type?
>> What if one of these is provided through DT and then the driver could
>> choose the nvram file based on the board id? Just another idea...
>
> That would require updating a table in the driver every time a new
> board comes out, I do not believe that that is a good solution.

You don't necessarily need to have a table in the driver if you embed
the id to the filename, for example something like this:

nvram-0598-1307.txt
nvram-<boardtype>-<boardrev>.txt

-- 
Kalle Valo