[PATCH v2 5/5] rockchip: rock-pi-4: dts: spi: Make the index of the spi flash the same in SPL and U-Boot proper

[Michal Suchánek]

On Mon, Jul 18, 2022 at 10:33:18AM +0200, Quentin Schulz wrote:
> Hi Xavier,
> 
> On 7/15/22 18:30, Xavier Drudis Ferran wrote:
> > Spi0 is not needed in SPL and SPL could be a little smaller without it,
> > but then the SF_DEFAULT_BOOT would have to be 0 to refer to spi1, and
> > that's confusing, because once U-Boot proper runs, it numbers the bus 1.
> > 
> > Add spi0 to the pre-reloc and spl trees so that the flash is always
> > connected to bus 1.
> > 
> 
> Mmmm... Could we instead make U-Boot use the bus number from the alias in
> the aliases DT node? I think the mmc subsystem does this already and it
> would mean we don't need to enable unnecessary devices. Also, relying on

It does not seem to work for mmc, though.

I have mmc2 and mmc1 in SPL, and mmc1 and mmc0 in u-boot.

There are actually 3 mmc interfaces using 2 drivers so the situations is
.. complex.

Thanks

Michal