Hi Fabio, > Hi Lukasz, > > On Wed, Jul 24, 2019 at 7:11 PM Lukasz Majewski <lukma@xxxxxxx> wrote: > > > > Dear All, > > > > I'd like to report that after moving the fsl-quadspi.c driver > > from ./drivers/mtd to ./drivers/spi (around 5.1-rc1) [1] the > > Vybrid's QUADSPI (even with single SPI-NOR memory connected) is not > > working anymore (the chip ID read is FF FF FF). > > > > This wouldn't be a problem per-se, but not all necessary code was > > moved > > - especially for vybrid which has issues with some HW bugs [2]: > > > > --------------->8---------------- > > * The IC guy suggests we use the "AHB Command Read" which is faster > > * then the "IP Command Read". (What's more is that there is a bug > > in > > * the "IP Command Read" in the Vybrid.) > > ---------------8<---------------- > > > > I've explicitly asked NXP support for this HW issue [3] - but till > > now there was no reply. > > > > The official linux-imx (from meta-freescale) seems not to support > > vybrid (vf610) anymore - and the newest available now kernel is > > 4.19 (with the old fsl-quadspi.c driver available). > > > > > > > > Hence the question - has anybody noticed this issue and (maybe) is > > working on it? > > I don't have access to a Vybrid board, but I kindly got the > confirmation from Andrey on Cc that QSPI is working fine on his Vybrid > based board running linux-next. > Thank you for your reply, Fabio. Andrey , could you share your setup info? How your memories are connected? Would it be possible to share your dts files for linux-next? I did a bit more debugging and the old driver (before conversion) on my setup breaks when I try to erase/write/read 256+ bytes (with dd's block size -> bs = 1). Could you check if erase, write and read of dd if=/dev/urandom of=/dev/mtd7 bs=1 count=256 works as expected? Writing larger chunks (with bs=64) works as expected. > Regards, > > Fabio Estevam Best regards, Lukasz Majewski -- DENX Software Engineering GmbH, Managing Director: Wolfgang Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany Phone: (+49)-8142-66989-59 Fax: (+49)-8142-66989-80 Email: lukma@xxxxxxx
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