linux-kernel - Re: [PATCH 2/2] DTS: dra7: Add "opp_high" opp node to support 1.5 GHz SoC operation

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Date:   Fri, 3 Feb 2017 17:14:27 -0600
From:   Nishanth Menon <nm@...com>
To:     Lukasz Majewski <lukma@...x.de>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Tony Lindgren <tony@...mide.com>,
        Benoît Cousson <bcousson@...libre.com>,
        Russell King <linux@...linux.org.uk>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        linux-omap <linux-omap@...r.kernel.org>,
        lkml <linux-kernel@...r.kernel.org>,
        dt list <devicetree@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        Kishon Vijay Abraham I <kishon@...com>
Subject: Re: [PATCH 2/2] DTS: dra7: Add "opp_high" opp node to support 1.5 GHz
 SoC operation

On Fri, Feb 3, 2017 at 5:06 PM, Lukasz Majewski <lukma@...x.de> wrote:
[...]
>> > +           opp_high@...0000000 {
>> > +                   opp-hz = /bits/ 64 <1500000000>;
>> > +                   opp-microvolt = <1210000 950000 1250000>;
>> > +           };
>> >     };
>> >
>> >     /*
>> >
>> Please keep this out of the way till we get the AVS class0 integrated
>> in. devices wont be save at 1.5GHz without the opp powerdomain + AVS
>> Class0 implementation.
>>
>
> Yes, correct. My AM5728 works with this opp, but AM5718 hangs when this
> frequency is enabled.

Right, and if you leave it on for too long without avs class0, you
might need a new silicon as well :(

If you'd like to help, I saw Dave's response, it will be good if you
can help us get the dependencies out of the way to enable 1.5G
cleanly.
-- 
---
Regards,
Nishanth Menon