Re: [PATCH v8 2/2] spi: cadence-quadpsi: Add support for the Cadence QSPI controller

[Ramuthevar, Vadivel MuruganX]

Hi Simon,

On 29/1/2020 8:01 PM, Simon Goldschmidt wrote:
> + some people possibly interested in this for the Altera platforms (see below)
>
> Hi all,
>
> This is about moving the cadence qspi driver (which is used on TI, Altera FPGAs
> and a new Intel SoC) to spi-mem.Vadivel asked me to include some Altera people
> in the loop (see below), as this is the only platform currently untested,
> I think.
>
> Right now, I'm not in the position to test this myself as we're currently stuck
> on an older RT kernel, so I cannot test with HEAD.
>
> Feel free to involve other Intel/Altera if you're interested in that peripheral
> not being broke for socfpga in one of the next releases :-)
>
> On Wed, Jan 29, 2020 at 10:18 AM Ramuthevar, Vadivel MuruganX
> <vadivel.muruganx.ramuthevar@xxxxxxxxxxxxxxx> wrote:
> > Hi,
> >
> >    Thank you for the query and confirmation.
> >
> > On 29/1/2020 4:31 PM, Simon Goldschmidt wrote:
> >
> > On Wed, Jan 29, 2020 at 8:25 AM Ramuthevar,Vadivel MuruganX
> > <vadivel.muruganx.ramuthevar@xxxxxxxxxxxxxxx> wrote:
> >
> > From: Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@xxxxxxxxxxxxxxx>
> >
> > Add support for the Cadence QSPI controller. This controller is
> > present in the Intel Lightning Mountain(LGM) SoCs, Altera and TI SoCs.
> > This driver has been tested on the Intel LGM SoCs.
> >
> > So it has been tested on LGM and Vignesh gave his ok for TI. Is there anyone
> > in the loop by now checking that this is valid for the 3rd platform using this
> > (Altera)?
> >
> > Or am I wrong in thinking that this driver is meant to replace
> > drivers/mtd/spi-nor/cadence-quadspi.c used on that platform?
> >
> > Absolutely , You are right, this driver is meant to replace to drivers/mtd/spi-nor/cadence-quadspi.c
> > for Intel, TI and Altera SoC's using Cadence-QSPI IP.
> >
> > Meanwhile we have adapted to spi-mem framework (to support spi-nor/nand)and also didn't change the existing
> > functionalities of spi-nor flash operations like hw_init/read/write/erase in drivers/mtd/spi-nor/cadence-quadspi.c,
> > so it works fine (might be in Altera as well).
> >
> > Already I checked that Graham Moore <grmoore@xxxxxxxxxxxxxxxxxxxxx> who has submitted the existing driver patches to upstream,
> > His mail-id is bouncing back, then I decided that you are the right person to ask, could you please add them in loop if you know the team
> > (socfpga platform engineers).
> OK, done that. I mainly know them from U-Boot development, so I'm not sure
> who's responsible for the Linux drivers...
Thank you for adding the team and respective members, let's see.

Regards
vadivel
> Regards,
> Simon
>
> > Regards
> > Vadivel
> >
> > Regards,
> > Simon