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From:   Stefan Moring <stefan.moring@technolution.nl>
Date:   Wed, 28 Jun 2023 15:20:39 +0200
Message-ID: <CAB3BuKDcg=7Umxv4yUTDVsQ3X_ash6iFmz-3XaENfni2=R_LCw@mail.gmail.com>
Subject: Re: [PATCH] spi: Increase imx51 ecspi burst length based on transfer length
To:     Fabio Estevam <festevam@gmail.com>
Cc:     broonie@kernel.org, shawnguo@kernel.org, s.hauer@pengutronix.de,
        linux-imx@nxp.com, linux-spi@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
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Hi Fabio,

In our application we send ~80kB at 10MHz. The total transfer time
went from ~80ms to 67ms, so that would be a reduction of 15%.
I tested it on an IMX8MM platform.

Kind regards,

Stefan Moring

Op wo 28 jun 2023 om 15:16 schreef Fabio Estevam <festevam@gmail.com>:
>
> Hi Stefan,
>
> On Wed, Jun 28, 2023 at 9:54=E2=80=AFAM Stefan Moring
> <stefan.moring@technolution.nl> wrote:
> >
> > IMX51 supports 4096 bit burst lengths. Using the spi transfer length
> > instead of bits_per_word increases performance significantly.
>
> Could you please share the performance increase after this change?
>
> Thanks