Re: Device tree binding for DVFS table

On Wed, Jul 11, 2012 at 06:26:30PM +0530, Prashant Gaikwad wrote:

Hi,

I am working on DT binding for Tegra DVFS.

For Tegra, DVFS node mainly consists of frequency and voltage pairs.
Frequency in the pair may change for different process. E.g. for
process 1 CPU clock frequency could be 900MHz at 1V while for
process 2 it could be 1GHz at 1V.
Tegra uses vendor specific ids to identify the correct frequency table.

Following is the proposed binding for voltage and frequency tables
used in DVFS. Looking for comments/suggestions to make it generic.

It seems we are trying to approach a generic binding for DVFS operating
points.  In that case, we will need a generic library helper function
to parse it.  But since we already have such a library - OPP
(drivers/base/power/opp.c) in place, I would approach the same goal
in other way around, adding device tree binding for OPP.  Please see
the patch I just sent out below and comment.

[PATCH] PM / OPP: Initialize OPP table from device tree

-- 
Regards,
Shawn