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

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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@xxxxxx>   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@xxxxxx>
Cc: Chris Ball<cjb@xxxxxxxxxx>
Cc: Balaji T K<balajitk@xxxxxx>
Cc:<linux-mmc@xxxxxxxxxxxxxxx>

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

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