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Date:   Wed, 22 Nov 2023 14:26:38 +0100
Subject: Re: spi: imx: Increase imx51 ecspi burst length fails on imx6dl and
 imx8mm
From:   linux@bigler.io
Reply-To: linux@bigler.io
To:     Stefan Moring <stefan.moring@technolution.nl>
Cc:     Thorsten Leemhuis <regressions@leemhuis.info>,
        Linux regressions mailing list <regressions@lists.linux.dev>,
        Mark Brown <broonie@kernel.org>, linux-kernel@vger.kernel.org,
        linux-spi@vger.kernel.org, Francesco Dolcini <francesco@dolcini.it>
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Hi=20

i did now  my test with the latest imx-sdma  firmware 4.6 from NXP
https://www.nxp.com/lgfiles/NMG/MAD/YOCTO/firmware-imx-8.18.bin
There is no improvement.
What is the HW that you use? What type of imx8?

Regards Stefan Bigler

Am 2023-11-21T11:34:26.000+01:00 hat  <linux@bigler.io> geschrieben:
>  Hi
>=20
> At least in my test-case the  commit is NOT introducing this regression, =
because the bits_per_word is 8, so the result is the same
> spi: imx: Take in account bits per word instead of assuming 8-bits
> 5f66db08cbd3ca471c66bacb0282902c79db9274
>=20
> I do not have the latest  mx-sdma firmware can you tell me where I get it=
. On=20
> https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.g=
it/tree/imx/sdma
> the latest I found was 4.5
>=20
> I tried to debug the code but it's hard vor me to understand where the pr=
oblem could be.
> I saw then I disable the dma with set
>=20
> imx51_ecspi_devtype_data {
> .has_dmamode =3D false,
> }
> the SPI is working fine.
>=20
> Should I do some more tests, do some loggings..=20
> Please let me know
>=20
> Regards=20
> Stefan Bigler