Re: [PATCHv2 5/5] mmc: sdhci-bcm2835: add sdhci quirk SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12

[Scott Branden]

On 14-11-05 08:50 PM, Stephen Warren wrote:
> On 11/05/2014 12:02 AM, Scott Branden wrote:
> > On 14-11-04 09:00 PM, Stephen Warren wrote:
> > > On 10/30/2014 12:36 AM, Scott Branden wrote:
> > > > SDHCI_QUIRK_MULTIBLOCK_READ_ACMD12 is missing and needed for this
> > > > controller.
> > >
> > > This seems fine, although any explanation of why this quirk is needed
> > > would be useful.
> > I don't know who to talk to at Arasan about this.  Will try hunting
> > around a little for more info as to why this is needed to have eMMC and
> > SD work properly through our internal testing on other non-2835 chipset
> > that shares the same SDHCI controller as 2835.
>
> I thought I heard that this wasn't a bug in the controller itself, but
> rather an integration issue between the IP core and the register bus
> it's attached to. Consequently, it may be SoC-specific or at least have
> SoC-specific variations?
Yes, this patch is to fix a different bug (in the IP) rather than the 
clock domain integration issue.
>

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