[PATCH] ddr: marvell: a38x: Add support for DDR4 from Marvell mv-ddr-marvell repository

[Tom Rini]

On Sat, Jan 14, 2023 at 07:51:00PM +0100, Pali Rohár wrote:
> On Friday 13 January 2023 21:00:21 Tom Rini wrote:
> > On Sat, Jan 14, 2023 at 02:41:32AM +0100, Pali Rohár wrote:
> > > On Friday 13 January 2023 16:38:55 Tony Dinh wrote:
> > > > @@ -16,4 +19,9 @@ obj-$(CONFIG_SPL_BUILD) += mv_ddr_build_message.o
> > > >  obj-$(CONFIG_SPL_BUILD) += mv_ddr_common.o
> > > >  obj-$(CONFIG_SPL_BUILD) += mv_ddr_spd.o
> > > >  obj-$(CONFIG_SPL_BUILD) += mv_ddr_topology.o
> > > > +obj-$(CONFIG_SPL_BUILD) += mv_ddr4_mpr_pda_if.o
> > > > +obj-$(CONFIG_SPL_BUILD) += mv_ddr4_training.o
> > > > +obj-$(CONFIG_SPL_BUILD) += mv_ddr4_training_calibration.o
> > > > +obj-$(CONFIG_SPL_BUILD) += mv_ddr4_training_db.o
> > > > +obj-$(CONFIG_SPL_BUILD) += mv_ddr4_training_leveling.o
> > > >  obj-$(CONFIG_SPL_BUILD) += xor.o
> > > 
> > > And all these new files are ddr4 specific, so should be wrapped in makefile section:
> > > ifdef CONFIG_DDR4
> > 
> > Looking at the Makefile in question, I think we might want to make the
> > whole thing ifdef CONFIG_SPL_BUILD ... endif and then more finely
> > control building of what objects are built.  Perhaps:
> > drivers/Makefile:obj-$(CONFIG_ARMADA_38X) += ddr/marvell/a38x/
> > should only be for SPL instead, even?
> 
> Some cleanup like this can be done. But it is related to DDR4 support
> and is mostly independent of it. So lets do it after having DDR4 there.

We're going to also want to not build the DDR3 code on the DDR4
platforms, right? A little clean up would make adding the DDR4 code a
bit cleaner for both cases. It's not a hard no, if someone really wants
to do the clean-up after.

-- 
Tom
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