[PATCH 2/4] cpufreq: add i.MX5 cpufreq driver

Viresh Kumar viresh.kumar at linaro.org
Mon May 26 08:22:02 PDT 2014


On 26 May 2014 19:28, Lucas Stach <l.stach at pengutronix.de> wrote:
> Right, the OPP in my example define the minimum required voltage for
> each frequency. This is in accordance to the OPP binding. But for this
> chip the datasheet explicitly says that it is ok to power the cpu rail
> with up to 1.4V, regardless of the current operating frequency. So this
> 1.4V is really the upper bound I would like to pass to the regulator
> framework. This ensures that the driver still works properly even if the
> external regulator can't scale down to the minimum (or in other words
> optimal) voltage.

One more query. You have mentioned earlier and I just wanted to confirm
this. In your platform/board regulator only supports one voltage, i.e. 1.4 uV,
and it we can't get lower values out of regulator ?

If that's the case, why are you looking to use regulator at all?



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