linux-kernel - Re: [PATCH v2 03/15] dt-bindings: devfreq: rk3399

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Message-ID: <YgQh2AnJenCuoFgu@robh.at.kernel.org>
Date:   Wed, 9 Feb 2022 14:19:36 -0600
From:   Rob Herring <robh@...nel.org>
To:     Brian Norris <briannorris@...omium.org>
Cc:     MyungJoo Ham <myungjoo.ham@...sung.com>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        linux-kernel@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        Lin Huang <hl@...k-chips.com>,
        linux-arm-kernel@...ts.infradead.org,
        Derek Basehore <dbasehore@...omium.org>,
        devicetree@...r.kernel.org, linux-pm@...r.kernel.org,
        Heiko Stuebner <heiko@...ech.de>
Subject: Re: [PATCH v2 03/15] dt-bindings: devfreq: rk3399_dmc: Fix Hz units

On Thu, Jan 27, 2022 at 03:07:14PM -0800, Brian Norris wrote:
> The driver and all downstream device trees [1] are using Hz units, but
> the document claims MHz. DRAM frequency for these systems can't possibly
> exceed 2^32-1 Hz, so the choice of unit doesn't really matter than much.
> 
> Rather than add unnecessary risk in getting the units wrong, let's just
> go with the unofficial convention and make the docs match reality.
> 
> A sub-1MHz frequency is extremely unlikely, so include a minimum in the
> schema, to help catch anybody who might have believed this was MHz.
> 
> [1] And notably, also those trying to upstream them:
> https://lore.kernel.org/lkml/20210308233858.24741-3-daniel.lezcano@linaro.org/
> 
> Signed-off-by: Brian Norris <briannorris@...omium.org>
> ---
> 
> (no changes since v1)
> 
>  .../bindings/devfreq/rk3399_dmc.yaml          | 24 +++++++++----------
>  1 file changed, 12 insertions(+), 12 deletions(-)

Reviewed-by: Rob Herring <robh@...nel.org>