[OpenWrt-Devel] [PATCH] brcm47xx: move wrt610n_v2 and e3000_v1 to mips74k subtarget

[Rafał Miłecki]

On 19 October 2014 09:19, Nathan Hintz <nlhintz at hotmail.com> wrote:
>> Date: Sun, 19 Oct 2014 07:48:04 +0200
>> Subject: Re: [PATCH] brcm47xx: move wrt610n_v2 and e3000_v1 to mips74k
>> subtarget
>> From: zajec5 at gmail.com
>> To: nlhintz at hotmail.com
>> CC: openwrt-devel at lists.openwrt.org; hauke at hauke-m.de
>>
>> On 19 October 2014 00:19, Nathan Hintz <nlhintz at hotmail.com> wrote:
>> >> > Neither are "SSB Wifi"
>> >>
>> >> They are.
>> >>
>> >> https://wikidevi.com/wiki/Linksys_WRT610N_v2
>> >> BCM4322 which is SSB based
>> >>
>> >> https://wikidevi.com/wiki/Linksys_E3000
>> >> BCM4322 which is SSB based
>> >>
>> >
>> > I see your point; however, the E3000 and WRT610Nv2 are mips74k, and
>> > would
>> > get the same
>> > benefit from using the mips74k subtarget (mips32r2) as all of the
>> > others.
>> > The only difference
>> > that I can see is that the E3000 and WRT610nV2 are required to use the
>> > proprietary
>> > Broadcom wl driver (which is one of the supported profiles under the
>> > mips74k
>> > subtarget) in
>> > order to utilize the 5GHz radio; whereas, with at least some of the
>> > others,
>> > using the proprietary
>> > Broadcom wl driver is optional. I could modify the patch description to
>> > include this info and to
>> > keep the "SSB Wifi" comment if you think it is necessary.
>>
>> There are few devices we don't have perfect solution for. I'm aware
>> that these 2 devices are MIPS 74K, but we're still bound to two
>> solutions:
>> 1) Use "generic" subtarget for E3000/WRT610Nv2 and make them suffer
>> from less optimized code. That's what we do now.
>> 2) Use "mips74k" subtarget for them, add "ssb" support to the
>> "mips74k", and make firmware bigger for dozens of other devices.
>
> There are no additional "ssb" bits that need to be added to the mips74k
> subtarget.
> The existing mips74k trx works out of the box on E3000 (and should work on
> WRT610nV2 as well).  As you mentioned earlier, wl.ko doesn't require any of
> the
> in-kernel SSB parts, as it handles everything it needs internally.  Simply
> build the
> mips74k target as it exists today; include the proprietary driver (or load
> it separately),
> and it all just works.  The patch I've provided should be the only change
> that is needed
> (to build the device specific .bin files).

OpenWrt still focuses on *openness* and default firmware includes
*open source* b43 driver. The open source b43 driver requires ssb.

-- 
Rafał
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