[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

Xavier Drudis Ferran xdrudis at tinet.cat
Mon Jul 18 11:09:56 CEST 2022

El Mon, Jul 18, 2022 at 10:33:18AM +0200, Quentin Schulz deia:
> 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
> boot order for the bus number is brittle in Linux, I don't know about
> U-Boot, but if we can avoid this assumption, it'd be great :)
> See: https://source.denx.de/u-boot/u-boot/-/commit/2243d19e5618122d9d7aba23eb51f63f2719dba5
> for how to do it today?

Maybe I should just drop this patch and try to define
CONFIG_SPL_DM_SEQ_ALIAS in configs/rock-pi-4-rk3399 instead ?
Let me test this a little...


> Your patch series got sent with each commit in their individual thread

I know. Sorry for the lapsus. I did it right in v1, wrong in v2, and will do right in v3. 

More information about the U-Boot mailing list