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

[Hans de Goede]

Hi,

On 30-06-16 10:46, Kalle Valo wrote:
> Arend Van Spriel <arend.vanspriel at broadcom.com> writes:
>
>>> Since we are dealing with a per-board config-file here, which is
>>> loaded from the os filesystem we really need to specify a basename
>>> here as the list of possible boards is endless, so we cannot
>>> have a lookup table in the driver.
>>
>> As Jonas mentioned the general principle of device tree is to be
>> agnostic with regards to OS and/or driver as you undoubtedly know. His
>> proposal seems like a usable solution for your problem while complying
>> to the device tree principle. So instead of overriding the default
>> brcmfmac should modify it when dt specifies the "module" property, ie:
>>
>> no "module" in DT:	nvram filename = brcm/brcmfmac43362-sdio.txt
>> "module=ap6210" in DT:	nvram filename = brcm/brcmfmac43362-ap6210.txt
>
> Just out of curiosity, what does "ap6210" exactly mean? I get that 43362
> is the chip id, but not ap6210. Is it just an arbitrary name?

It is more or less an arbitrary name, typically these sdio wifi chips
are used as a pre-assembled module (a tiny pcb) with some things like
the necessary crystal / resonator and various capacitors and resistors
on there. The brcm based sdio wifi modules typically come with a metal
shield cap which has a module type stamped on it, e.g. ap6210,
ap6476, toc9002.

Regards,

Hans