poor performance with W2CBW003 (Marvell 8686)

Andreas Kemnade andreas at kemnade.info
Thu Jun 14 01:45:45 EDT 2012


Hi,

On Wed, 13 Jun 2012 11:39:08 -0700 (PDT)
hong zhang <henryzhang62 at yahoo.com> wrote:

> You have to identify problem caused by 
> SDIO host controller or wifi driver.
> 
> If driver is working well in x86 with Roch SDIO, that means wifi driver is ok. 
> 
> You have to find out
> 1. SDIO interface if using Interrupt or PIO

Hmm, very interesting point, of course, there are interrupts. But after reading
the commit logs in the patched 2.6.32 kernel I see there is a patch enabling
asynchronous *sdio* interrupts. That looks clearly suspicious. 

> 2. 1 bit or 4 bit

Hmm, 4bit.

Greetings
Andreas Kemnade
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