[U-Boot] [RESEND PATCH v7 00/11] rockchip: Add new rk3399 boards

[Paul Kocialkowski]

Hi,

On Thu, 2019-05-09 at 16:15 +0530, Jagan Teki wrote:
> Hi Paul,
> 
> On Thu, May 9, 2019 at 12:38 PM Paul Kocialkowski
> <paul.kocialkowski at bootlin.com> wrote:
> > Hi,
> > 
> > On Wed, 2019-05-08 at 11:11 +0530, Jagan Teki wrote:
> > > (Sorry for the noice, I have missed to send two patches from v7)
> > > 
> > > This is v7 resend patchset for New rk3399 boards support wrt previous
> > > version[1]
> > > 
> > > Unfortunately initial version of creating rk3399-u-boot.dtsi and
> > > orangepi rk3399 changes are merged, so this is rework on top of
> > > u-boot-rockchip/master.
> > > 
> > > Overall this series add support below rk3399 boards
> > > - NanoPI M4
> > > - NanoPC T4
> > > - NanoPI NEO4
> > > - Orangepi RK3399
> > > - Rock PI 4
> > > - Rockpro64
> > > 
> > > All the respective dts(i) files are synced from Linux 5.1-rc2 and few
> > > dts(i) from linux-next.
> > > 
> > > SoC u-boot specific dtsi rk3399-u-boot.dtsi changes are part of another
> > > series [3].
> > > 
> > > Out of all above boards Rockpor64, Rock-PI and Nanopi NEO4 would support
> > > booting via Rockchip miniloader as of now.
> > 
> > Could you send these two boards in a separate series so that we avoid
> > merging them for now (because SPL support is broken) and then re-
> > iterate the series later with the DDR bringup? Or maybe find a way to
> > disable SPL support, but in any case, it's not ok to merge a board with
> > SPL enabled and broken.
> 
> I have explained the details about this concern on v2 [1], thought you
> would comeback on the same line instead here.

Yes, you have already explained the issue, but I don't think it's
enough a justification to merge broken SPL support. If it was only
partial or limited, it would be fine, but here it's just broken.

> Anyway, making SPL as an optional is not an idea to go with Mainline
> as we make many decisions with regards to make SPL is mandatory.

Yes I think making SPL mandatory is a good idea, so that's why I'm
suggesting that we don't merge the boards until they have SPL support.

> Since the DDR is show stopper here (and it would really need a good
> amount of time, since it effect the other boards), I can go with TPL
> enabled boot-chain where ddr bin, SPL and U-Boot proper can be part of
> booting stages. This way we can avoid skipping SPL usage, and many
> config changes to make SPL optional.

Honestly I don't really see the point of merging these boards at all if
they don't have SPL support. People who really want to use them with
the rockchip blob can cherry-pick the patches from the list in the
meantime.

It also creates incentive for people to free the DDR init, since that
becomes a condition to have the board upstream.

What do you think?

Cheers,

Paul

-- 
Paul Kocialkowski, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com