Re: [PATCH 3/6] hwrng: omap3-rom - Call clk_prepare() on init and exit only

From: Tony Lindgren
Date: Sat Sep 14 2019 - 13:59:48 EST

* Sebastian Reichel <sre@xxxxxxxxxx> [190914 13:01]:
> Hi,
> On Fri, Sep 13, 2019 at 03:09:19PM -0700, Tony Lindgren wrote:
> > Also, we should not call prepare and unprepare except during init, and
> > only call enable and disable during use.
> Why? Usually clk_(un)prepare() is the part saving most power, so I
> would expect the runtime resume handlers to call clk_prepare_enable
> and vice versa in the suspend handler.

Sure yeah fine with me, clk_prepare_enable() is more generic at the
cost of some extra calls to toggle a clock gate bit :) Let's also
forget the probe changes, those will get cleared with the runtime
PM changes anyways.