[PATCH 02/11] mmc: omap: add clk_prepare and clk_unprepare

Rajendra Nayak
2012-06-25T07:13:19Z

On Monday 25 June 2012 11:48 AM, Paul Walmsley wrote:
> On Mon, 25 Jun 2012, Rajendra Nayak wrote:
>
>> On Saturday 23 June 2012 12:04 AM, Paul Walmsley wrote:
>>> On Fri, 22 Jun 2012, S, Venkatraman wrote:
>>>
>>>> On Fri, Jun 22, 2012 at 7:18 PM, Rajendra Nayak<rnayak@ti.com> wrote:
>>>>> In preparation of OMAP moving to Common Clk Framework(CCF) add
>>>>> clk_prepare()
>>>>> and clk_unprepare() for the mmc and hsmmc clocks as part of the drivers
>>>>> probe() and remove() routines.
>>>>>
>>>>> Signed-off-by: Rajendra Nayak<rnayak@ti.com>
>>>>> Cc: Chris Ball<cjb@laptop.org>
>>>>> Cc: Balaji T K<balajitk@ti.com>
>>>>> Cc:<linux-mmc@vger.kernel.org>
>>>>
>>>> Rajendra,
>>>> Can this be applied independently, or does this patch have a
>>>> dependency on other patches in the series ?
>>>
>>> A better way to handle this one would be to convert the driver to runtime
>>> PM. That needs to be done anyway.
>>
>> Well, mmc driver is already using runtime PM. But it still using clock
>> apis' to deal with some optional debounce clock needed only on 2430.
>
> drivers/mmc/host/omap.c, which is what this patch changes, has not yet
> been converted to use runtime PM in mainline.

Venkat/Balaji,

Any plans of converting this driver to use runtime pm?

>
> This is a driver for the MSDI IP block which is not available on 2430.

Sorry, I meant to say the debounce clock in omap_hsmmc.c was used only
on 2430. I seemed to have overlooked the fclk/iclk in drivers/mmc
/host/omap.c completely. That one seems to be for the controller in
2420 (atlest, and maybe some other older OMAPs).

>
> - Paul