Re: [PATCH 12/13] cpufreq: Add cpufreq driver for Tegra124

[Peter De Schrijver]

On Fri, Jul 11, 2014 at 06:35:56AM +0200, Viresh Kumar wrote:
> Hi Tuomas,
> 
> On 11 July 2014 03:12, Tuomas Tynkkynen <ttynkkynen@xxxxxxxxxx> wrote:
> > Add a new cpufreq driver for Tegra124. Instead of using the PLLX as
> > the CPU clocksource, switch immediately to the DFLL. It allows the use
> > of higher clock rates, and will automatically scale the CPU voltage as
> > well. We also rely on the DFLL driver to determine the CPU clock
> > frequencies that the chip supports, so that we can directly build a
> > cpufreq table with the OPP library helper dev_pm_opp_init_cpufreq_table.
> >
> > This driver is a completely independent of the old cpufreq driver
> > (tegra-cpufreq), which is only used on Tegra20.
> >
> > Signed-off-by: Tuomas Tynkkynen <ttynkkynen@xxxxxxxxxx>
> 
> Please reuse cpufreq-cpu0 instead of adding a new driver. Similar
> is being adopted by all platforms now: krait, mvebu, etc..

I don't think that's going to work? The voltage scaling is handled in hw.
cpufreq-cpu0 seems to assume explicit sw control of the vdd_cpu regulator?

Cheers,

Peter.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/