[U-Boot] [WIP PATCH 0/2] arm: socfpga: Add Cadence QSPI support

[Stefan Roese]

Hi SoCFPGA-developers!

I'm currently using Marek's latest SoCFPGA port. This works really great so far.
Thank you all for this effort.

What I need additionally is SPI NOR flash support. So I talked a bit with Marek
and tried to port the Cadence QSPI driver to mainline U-Boot (on-top of Marek's
patch set of course). This version in these patches now compiles clean. And
detecting of the SPI flash also works good. Reading also seems to be okay.
Only easing and writing have some problems.

Perhaps somebody from Altera with deeper Cadence SPI controller knowledge
can take a quick look at this. Could be a pretty obvious mistake that I
made while copying / porting the code. Or something else thats simply
missing.

Any hints are really appretiated!

BTW: I'm currently testing this on the EBV SoCrates board.

Thanks,
Stefan

Cc: Chin Liang See <clsee at altera.com>
Cc: Dinh Nguyen <dinguyen at altera.com>
Cc: Vince Bridgers <vbridger at altera.com>
Cc: Marek Vasut <marex at denx.de>
Cc: Pavel Machek <pavel at denx.de>