Re: [imx][vybrid][qspi] Regression notification - vybrid vf610 QUADSPI - BK4 board

[Fabio Estevam <festevam@xxxxxxxxx>]

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.

Regards,

Fabio Estevam

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