[PATCH 01/26] Revert "pci: pci-uclass: Dynamically allocate the PCI regions"

[Daniel Schwierzeck]

Am Sonntag, den 14.02.2021, 09:52 -0500 schrieb Tom Rini:

...

> > > > > > 
> > > > > > > Tom, do you know the situation here?
> > > > > 
> > > > > So, I made a lack of DM_PCI migration be fatal and got a
> > > > > build done
> > > > > here:
> > > > > https://gitlab.denx.de/u-boot/u-boot/-/pipelines/6348
> > > > > 
> > > > > Of note, MIPS malta fails, so I had to drop that from pytest
> > > > > to complete
> > > > > the world build.  There's then a handful of ARM boards,
> > > > > another large
> > > > > chunk of PowerPC, and then a few others such as r7780mp.  SH
> > > > > is the big
> > > > > what to do here to me, other than PowerPC, as other than
> > > > > r2dplus
> > > > > everything is missing the main "convert to DM" migration
> > > > > deadline as
> > > > > well.
> > > > 
> > > > What should we do for this patch?
> > > > 
> > > > If the plan is to drop all boards that are not converted to DM
> > > > PCI in
> > > > 2021.04, I can drop this revert patch in v2.
> > > 
> > > I've posted the patch to drop the SH boards.  Daniel, what about
> > > Malta?
> > 
> > Malta should be fixed, since it's mips used in CI.
> 
> There's also qemu_mips* in CI, so it depends on what Daniel thinks is
> the right overall answer here.
> 

Malta is the MIPS reference board physically as well as in Qemu.
qemu_mips is actually deprecated and is going to be removed from Qemu
sooner or later. That's why I added Malta to CI with the goal to remove
qemu_mips.

The problem with MIPS and DM_PCI is that there are some generic issues
with memory mapping and CONFIG_SYS_SDRAM_BASE being used as virtual
address. Actually I have a pending patch queue from Paul Burton for
Malta for converting to DM_PCI, but that requires resolving the generic
issues with some refactoring for all MIPS boards. It's still on my TODO
list ;)

Until I can spare enough time to resolve all issues, I could try to
disable the PCI driver in Malta defconfig and mark the driver as broken
in Kconfig. This way we can avoid removing the whole board.

-- 
- Daniel