[Gta04-owner] Small update to 3.7-gta04 kernel: faster wifi.

[NeilBrown]

On Fri, 18 Oct 2013 12:00:57 +0200 "Dr. H. Nikolaus Schaller"
<hns at goldelico.com> wrote:

> Hi Neil,
> 
> Am 18.10.2013 um 11:44 schrieb NeilBrown:
> 
> > 
> > I've just pushed out a small update to 3.7-gta04.
> > 
> > This update adds support for the IRQ line from SDIO cards, such as the wifi
> > in the gta04.
> > This allows the wifi to go faster.
> > With polling (the old behaviour) I get about 1Mb/sec
> > With Interupts enabled and polling disabled I get about 4Mb/sec.
> > If I have interrupts *and* polling (which admittedly is a strange
> > config to even try) I get 5Mb/sec on my 800MHz board, and 6Mb/sec on
> > my 1GHz board.
> 
> That is good news for Issue #488 [1].
> 
> > So the code currently does both.  It is a bit of a hack (and not the only
> > hack) but it works OK for now.
> > 
> > This is will well short of the 40Mb/sec my notebook gets!
> > So it is an improvement, but not as much as I had hoped.
> 
> Does you patch also work for 3.12 or does it need (additional) hacks?
> 
> Or has anyone already done speed tests with 3.12 showing if it is
> really needed or not?

There is a 3.12 patch in my 'mainline' branch.

http://git.neil.brown.name/git?p=gta04.git;a=commitdiff;h=ad39271dc470f4c1ce048e58e4d137b37d5ff808


There were patches on the omap list recently:
https://lkml.org/lkml/2013/10/5/36

but they don't work for me.

> 
> BTW: the MMC1 interface (SD card) is running with ca. 19 MByte/s
> (which fits to the 25 MHz clock and 8 data bits parallel bus).

Isn't it a 4bit bus between the OMAP and the WIFI?

NeilBrown

> 
> BR,
> Nikolaus
> 
> [1]: http://projects.goldelico.com/p/gta04-kernel/issues/488/
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