Re: OMAP HSMMC problems with off-mode

[Kevin Hilman <khilman@deeprootsystems.com>]

Paul Walmsley <paul@pwsan.com> writes:

> Hi Kevin
>
> On Thu, 9 Dec 2010, Kevin Hilman wrote:
>
>> Paul, do you want to submit a formal patch for this for 2.6.38? if not,
>> I can add a changelog and queue this with other PM core changes for 2.6.38.
>
> we should probably come up with a patch for .38 that only increments this 
> when off-mode is entered... otherwise there will probably be a performance 
> hit when off-mode-supporting devices are reinitialized after every 
> clk_enable() :-)  The HSMMC driver also resets the IP block when that 
> happens.

I have a series for this (will post shortly), but it only works for
omap_devices, since otherwise it's rather hacky to find the powerdomain
for a given device.

Unfortunately, MMC is still not converted to omap_device/omap_hwmod, so
my series doesn't help for MMC. :(

Kevin