linux-kernel - Re: [PATCH] spi: amd: Configure device speed

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Message-ID: <Yvzw0GqUd9ZgxUTo@sirena.org.uk>
Date:   Wed, 17 Aug 2022 14:44:48 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Shreeya Patel <shreeya.patel@...labora.com>
Cc:     sanju.mehta@....com, linux-spi@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel@...labora.com,
        krisman@...labora.com, alvaro.soliverez@...labora.com,
        Lucas Tanure <tanureal@...nsource.cirrus.com>
Subject: Re: [PATCH] spi: amd: Configure device speed

On Wed, Aug 17, 2022 at 06:48:09PM +0530, Shreeya Patel wrote:

> Create mechanism to configure device clock frequency such
> that it is the closest frequency supported by the
> AMD controller.

You shouldn't use the closest, you should use a frequency which is
strictly less than the requested one - driving things too fast will
generally break but too slow is pretty much always fine.

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