linux-kernel - Re: [[PATCH v2 1/2] dt-bindings: opp: Add 'opp-microwatt' entry in the OPP

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Date:   Wed, 23 Feb 2022 14:15:18 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Lukasz Luba <lukasz.luba@....com>
Cc:     linux-kernel@...r.kernel.org, dietmar.eggemann@....com,
        rafael@...nel.org, daniel.lezcano@...aro.org, nm@...com,
        sboyd@...nel.org, mka@...omium.org, dianders@...omium.org,
        robh+dt@...nel.org, devicetree@...r.kernel.org,
        linux-pm@...r.kernel.org
Subject: Re: [[PATCH v2 1/2] dt-bindings: opp: Add 'opp-microwatt' entry in
 the OPP

On 23-02-22, 08:39, Lukasz Luba wrote:
> For the EM we need only one value. If there would be some other users
> of this field in future we might add the multiple power values support.
> Currently there is no need I would say, unless it's a hard requirement
> to be aligned with opp-microvolt.

This isn't really up to what the software wants to do (to some level yes it is).
The DT describes the hardware and should do so in an unambiguous way and it
shouldn't be required to update the bindings again and again. It should be done
just once, and in the right way possible.

If the power is actually per-regulator, then it should be present in that form.
The EM can just sum the up later on.

-- 
viresh