linux-kernel - Re: [PATCH v2 2/2] arm64: dts: qcom: sc7280: Add cpu OPP tables

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Message-ID: <CAD=FV=Vng40b05F2_i7qqXC+yN=ZBgRXsio-86sBA+QdoMMGaw@mail.gmail.com>
Date:   Tue, 4 May 2021 13:02:28 -0700
From:   Doug Anderson <dianders@...omium.org>
To:     Sibi Sankar <sibis@...eaurora.org>
Cc:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Matthias Kaehlcke <mka@...omium.org>,
        Viresh Kumar <viresh.kumar@...aro.org>,
        Stephen Boyd <sboyd@...nel.org>,
        Andy Gross <agross@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>,
        Linux PM <linux-pm@...r.kernel.org>
Subject: Re: [PATCH v2 2/2] arm64: dts: qcom: sc7280: Add cpu OPP tables

Hi,

On Mon, May 3, 2021 at 11:59 PM Sibi Sankar <sibis@...eaurora.org> wrote:
>
> +       cpu0_opp_table: cpu0_opp_table {
> +               compatible = "operating-points-v2";
> +               opp-shared;
> +
> +               cpu0_opp1: opp-300000000 {

It seems like it might be nicer to give the node labels a less
arbitrary name. How about?

cpu0_opp_300mhz: opp-300000000

That has advantes:

* If, for some reason, you have to mess with some operating point in
another dts it'll be less fragile.

* It'll make diffing easier between SoCs.

* If you end up putting a new operating point in the middle you don't
need to rename everything below.

Other than that, I can't say that I'm a huge expert on the
interconnect stuff and whether those make sense, but I'm still OK
with:

Reviewed-by: Douglas Anderson <dianders@...omium.org>