[PATCH v4 2/2] arm: mvebu: add Globalscale MOCHAbin support

[Pali Rohár]

On Thursday 28 October 2021 10:42:27 Robert Marko wrote:
> On Wed, Oct 27, 2021 at 10:34 PM Tom Rini <trini at konsulko.com> wrote:
> >
> > On Wed, Oct 27, 2021 at 10:11:36PM +0200, Robert Marko wrote:
> > > On Wed, Oct 27, 2021 at 10:07 PM Tom Rini <trini at konsulko.com> wrote:
> > > >
> > > > On Wed, Oct 27, 2021 at 09:53:24PM +0200, Robert Marko wrote:
> > > > > On Wed, Oct 27, 2021 at 9:48 PM Marek Behún <marek.behun at nic.cz> wrote:
> > > > > >
> > > > > > On Wed, 27 Oct 2021 21:40:11 +0200
> > > > > > Robert Marko <robert.marko at sartura.hr> wrote:
> > > > > >
> > > > > > > To me, it also doesn't make sense to do it like that as what's the
> > > > > > > purpose of having stuff that is completely unsupported in U-boot in
> > > > > > > DTS?
> > > > > >
> > > > > > It makes sense because the device tree should compeltely describe the
> > > > > > device. It doesn't matter if some of it's components don't have U-Boot
> > > > > > drivers. Devicetree is independent on sw, and should be the same for
> > > > > > Linux, BSD, and U-Boot.
> > > > >
> > > > > Trust me, I wish this was true, but I don't see it happening anytime soon
> > > > > as bindings will always change but it is something to aspire to.
> > > > > >
> > > > > > > Also, take a look at other Armada 7k/8k devices, they are all doing it
> > > > > > > the same way as I am.
> > > > > >
> > > > > > Some of them (most?) are, but that's just because we haven't synced
> > > > > > them yet.
> > > > > >
> > > > > > But you don't need to do it now, IMO, if it would take too much work.
> > > > >
> > > > > The thing is that you cant just copy/paste the Linux DTS, it won't compile
> > > > > as the SoC DTSI as well as CP DTSI are different.
> > > > > Otherwise having a -u-boot.dtsi would work and I honestly don't have time
> > > > > to sync those and then fix all of the regressions.
> > > >
> > > > The intention is that you copy/paste (well, cp) the DTS files in to
> > > > U-Boot and then use -u-boot.dtsi to do whatever further is needed.
> > >
> > > I understand that, but SoC and CP DTSI-s are really out of sync with Linux,
> > > it would require to pretty much override/delete half the DTS for -u-boot.dtsi
> > > for it to work.
> > > Otherwise, other 7k/8device would use -u-boot.dtsi as well.
> >
> > OK, so it needs to be done then and fixed up.  The files weren't
> > supposed to get out of sync to start with.
> 
> I wish it were that simple, the biggest issue is dealing with the
> regressions after
> as U-boot drivers have also diverged in binding to some upstream ones.
> And I seriously don't have time to do this all on my own and also
> refactor all existing
> 7k/8k boards.

Now I have done this for Armada 3720 code and all its boards:
https://patchwork.ozlabs.org/project/uboot/patch/20211126135715.26485-10-kabel@kernel.org/
https://patchwork.ozlabs.org/project/uboot/list/?series=285999&state=*

So I hope and expect that somebody else who develops Armada 7040 would
do it for Armada 7040 code and board files...