On Mon, Mar 02, 2015 at 04:34:34PM +0530, Viresh Kumar wrote:

On 2 March 2015 at 16:20, Leo Yan [off-list ref] wrote:

quoted

i'm glad to use more general method, let me give more input so that we
can see if can figure out a better way. ;)

And I am glad to hear that :)

quoted

1. From hardware design, during the initialization phase, it will
bind every opps with its corresponding voltage, and pass these related
info to power controller. So later, in kernel the cpufreq driver don't
need manually change the voltage, it will only change the cpu clock
frequency and power controller will automatically handle voltage
related operations. This is similar with TC's SPC implementation.

So looks likely the cpufreq-dt driver's voltage related ops are
redundant for this case.

Its okay, they wouldn't harm. You don't have to specify any regulator
in CPUs DT node and the code will not try any fancy stuff :)

If so, it's make sense to directly use cpufreq-dt driver; i will try
it firstly. Appreciate for suggestion :)

Thanks,
Leo Yan