linux-kernel - Re: [PATCH v6 1/5] drm/msm/disp/dpu1: set mdp clk to the maximum frequency in opp table during probe

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Message-ID: <CAE-0n51vfoOK_6B0yAvws32MtLQ1SvBPoQPHBFE14TLzZFUZaw@mail.gmail.com>
Date:   Thu, 17 Mar 2022 17:11:00 -0400
From:   Stephen Boyd <swboyd@...omium.org>
To:     Vinod Polimera <quic_vpolimer@...cinc.com>,
        devicetree@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, robdclark@...il.com,
        dmitry.baryshkov@...aro.org, dianders@...omium.org,
        quic_kalyant@...cinc.com
Subject: Re: [PATCH v6 1/5] drm/msm/disp/dpu1: set mdp clk to the maximum
 frequency in opp table during probe

Quoting Vinod Polimera (2022-03-14 07:46:53)
> use max clock during probe/bind sequence from the opp table.
> The clock will be scaled down when framework sends an update.

Capitalize 'use'.

Why is it important to use max frequency during probe/bind? Does not
setting the clk rate during probe mean that we'll never use the max
rate? Does it speed things up during probe?