[U-Boot] [PATCH v3 08/10] sun5/7i: add an implementation of the psci suspend function

Maxime Ripard maxime.ripard at free-electrons.com
Thu Oct 27 15:20:02 CEST 2016


Hi,

On Thu, Oct 27, 2016 at 03:10:58PM +0200, Antoine Tenart wrote:
> Hi,
> 
> On Wed, Oct 26, 2016 at 02:38:10PM +0200, Maxime Ripard wrote:
> > On Wed, Oct 26, 2016 at 02:10:31PM +0200, Antoine Tenart wrote:
> > > +
> > > +#ifndef CONFIG_MACH_SUN7I
> > > +	/* switch cpuclk to losc */
> > > +	clrbits_le32(&ccm->cpu_ahb_apb0_cfg, 0x3 << CPU_CLK_SRC_SHIFT);
> > > +#endif
> > 
> > Some kind of comment here would be nice.
> 
> That's based on my experiments, switching the cpu clk to losc wasn't
> working (the board hanged). I agree that's not the best explanation
> ever...

Still, even if that's only to say that it was based on experiments and
you don't really know why. It's definitely not obvious to anyone, so
it deserves a comment to explain why you did it that way.

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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