Actually, you have to check SDIO driver done by TI. There are 5 SDIO pins need to check. 4 data pins and one clock pin. Double check the SDIO pins muxs and clock rate using TI reference manual. By performance issues. 1. bit modes 1 or 4 2. interrupt/PIO 3. SDIO clock rate Command 52 and 53 are important. See this link for SDIO reference. http://www.sandisk.com/Assets/File/OEM/Manuals/SD_SDIO_specsv1.pdf --- On Thu, 6/14/12, hong zhang <henryzhang62@xxxxxxxxx> wrote: > From: hong zhang <henryzhang62@xxxxxxxxx> > Subject: Re: poor performance with W2CBW003 (Marvell 8686) > To: "Andreas Kemnade" <andreas@xxxxxxxxxxxx> > Cc: "Dan Williams" <dcbw@xxxxxxxxxx>, linux-wireless@xxxxxxxxxxxxxxx, dsd@xxxxxxxxxx, libertas-dev@xxxxxxxxxxxxxxxxxxx > Date: Thursday, June 14, 2012, 11:11 AM > bit mode and interrupt or PIO are > configured in SDIO hoster side. > Not in driver side. > > --- On Thu, 6/14/12, Andreas Kemnade <andreas@xxxxxxxxxxxx> > wrote: > > > From: Andreas Kemnade <andreas@xxxxxxxxxxxx> > > Subject: Re: poor performance with W2CBW003 (Marvell > 8686) > > To: "hong zhang" <henryzhang62@xxxxxxxxx> > > Cc: "Dan Williams" <dcbw@xxxxxxxxxx>, > linux-wireless@xxxxxxxxxxxxxxx, > dsd@xxxxxxxxxx, libertas-dev@xxxxxxxxxxxxxxxxxxx > > Date: Thursday, June 14, 2012, 12:45 AM > > Hi, > > > > On Wed, 13 Jun 2012 11:39:08 -0700 (PDT) > > hong zhang <henryzhang62@xxxxxxxxx> > > 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 > > > > _______________________________________________ > libertas-dev mailing list > libertas-dev@xxxxxxxxxxxxxxxxxxx > http://lists.infradead.org/mailman/listinfo/libertas-dev > -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
