linux-kernel - Re: [PATCH] spi: fsl-dspi: avoid SCK glitches with continuous transfers

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Message-ID: <20230607120344.ui2ubzdkb6cbjm5o@skbuf>
Date:   Wed, 7 Jun 2023 15:03:44 +0300
From:   Vladimir Oltean <vladimir.oltean@....com>
To:     Mark Brown <broonie@...nel.org>, linux-spi@...r.kernel.org
Cc:     Vladimir Oltean <olteanv@...il.com>, linux-kernel@...r.kernel.org,
        Lisa Chen <minjie.chen@...kplus.com>
Subject: Re: [PATCH] spi: fsl-dspi: avoid SCK glitches with continuous
 transfers

Hi Mark,

On Tue, May 30, 2023 at 01:34:02AM +0300, Vladimir Oltean wrote:
> In other words, the default values (of 0 and 0 ns) result in SCK
> glitches where the SCK transition to the idle state, as well as the SCK
> transition from the idle state, will have no delay in between, and it
> may appear that a SCK cycle has simply gone missing. The resulting
> timing violation might cause data corruption in many peripherals, as
> their chip select is asserted.

I know you don't appreciate content-free pings, but is this patch on
your radar?

Thanks,
Vladimir