[PATCH v7 2/8] cpufreq: mediatek: Enable clock and regulator

[andrew-sh.cheng]

On Mon, 2020-07-13 at 15:09 +0530, Viresh Kumar wrote:
> On 10-07-20, 10:31, Andrew-sh.Cheng wrote:
> > From: "Andrew-sh.Cheng" <andrew-sh.cheng at mediatek.com>
> > 
> > Need to enable regulator,
> > so that the max/min requested value will be recorded
> > even it is not applied right away.
> > 
> > Intermediate clock is not always enabled by ccf in different projects,
> > so cpufreq should enable it by itself.
> > 
> > Change-Id: I9f4c8b1ea793794f5f9cdc65427daad1393f5df8
> 
> You are on V7 right now, these should have been gone long back.

Hi Viresh, 
Sorry for forgetting to remove the change-ID message.

> 
> > Signed-off-by: Andrew-sh.Cheng <andrew-sh.cheng at mediatek.com>
> > ---
> >  drivers/cpufreq/mediatek-cpufreq.c | 33 +++++++++++++++++++++++++++++----
> >  1 file changed, 29 insertions(+), 4 deletions(-)
> > 
> > diff --git a/drivers/cpufreq/mediatek-cpufreq.c b/drivers/cpufreq/mediatek-cpufreq.c
> > index 0c98dd08273d..4b479c110cc9 100644
> > --- a/drivers/cpufreq/mediatek-cpufreq.c
> > +++ b/drivers/cpufreq/mediatek-cpufreq.c
> > @@ -350,6 +350,11 @@ static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu)
> >  		ret = PTR_ERR(proc_reg);
> >  		goto out_free_resources;
> >  	}
> > +	ret = regulator_enable(proc_reg);
> > +	if (ret) {
> > +		pr_warn("enable vproc for cpu%d fail\n", cpu);
> > +		goto out_free_resources;
> > +	}
> 
> This is already done by the OPP core now.

Do you mean I can use dev_pm_opp_set_regulators() and
dev_pm_opp_set_rate() to do dvfs?
Due to mediatek-cpufreq may change Vproc and Vsram by special flow, that
is not suitable.

>