linux-kernel - Re: [PATCH 2/7] spi: fsi: Fix clock running too fast

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Message-ID: <20200820171257.GG5854@sirena.org.uk>
Date:   Thu, 20 Aug 2020 18:12:57 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Eddie James <eajames@...ux.ibm.com>
Cc:     linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, joel@....id.au,
        bradleyb@...ziesquirrel.com, robh+dt@...nel.org, arnd@...db.de
Subject: Re: [PATCH 2/7] spi: fsi: Fix clock running too fast

On Thu, Aug 20, 2020 at 12:02:23PM -0500, Eddie James wrote:
> From: Brad Bishop <bradleyb@...ziesquirrel.com>
> 
> Use a clock divider tuned to a 200MHz FSI clock.  Use of the previous
> divider at 200MHz results in corrupt data from endpoint devices. Ideally
> the clock divider would be calculated from the FSI clock, but that
> would require some significant work on the FSI driver.

Presumably this divider was chosen for FSI clocks that aren't 200MHz -
how will those be handled?

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