On Wed, 14 Oct 2009 11:34:42 +0100
David Vrabel wrote:
>
> It can be done per-card, the switch to the lower voltage just needs to
> be deferred. Initially set the voltage to a standard one that's
> supported by the card and host. After the card is fully initialized and
> enumerated, have a hoo
Pierre Ossman wrote:
> On Wed, 14 Oct 2009 09:56:28 +0200
> Ohad Ben-Cohen wrote:
>
>> On Tue, Oct 13, 2009 at 4:39 AM, Philip Langdale wrote:
>>> Interesting. But that means that Ohad's patch doesn't make much sense;
>>> his uses the MMC low voltage OCR bit in an SDIO context. So either, the
>>
On Wed, 14 Oct 2009 09:56:28 +0200
Ohad Ben-Cohen wrote:
> On Tue, Oct 13, 2009 at 4:39 AM, Philip Langdale wrote:
> > Interesting. But that means that Ohad's patch doesn't make much sense;
> > his uses the MMC low voltage OCR bit in an SDIO context. So either, the
> > patch is wrong, or he's de
On Tue, Oct 13, 2009 at 4:39 AM, Philip Langdale wrote:
> Interesting. But that means that Ohad's patch doesn't make much sense;
> his uses the MMC low voltage OCR bit in an SDIO context. So either, the
> patch is wrong, or he's dealing with out-of-spec hardware.
Yes, the hardware is out-of-spec.
Although the hardware supports a 4/8bit SD interface and the driver
unconditionally advertises all hardware caps to the MMC core, not all
datalines may actually be wired up. This patch introduces another
field to au1xmmc platform data allowing platforms to disable certain
advanced host controller
