linux-kernel - Re: [PATCH] spi: Increase imx51 ecspi burst length based on transfer length

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

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

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@...il.com>:
>
> Hi Stefan,
>
> On Wed, Jun 28, 2023 at 9:54 AM Stefan Moring
> <stefan.moring@...hnolution.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