[U-Boot] [PATCH v2 1/2] drivers; add DM_NO_OF Kconfig option

[Tom Rini]

On Wed, May 30, 2018 at 09:58:16PM +0200, Angelo Dureghello wrote:
> Hi Tom and Simon,
> 
> thanks for the support.
> 
> On Mon, May 28, 2018 at 08:59:21PM -0400, Tom Rini wrote:
> > On Sun, May 27, 2018 at 07:45:12PM -0600, Simon Glass wrote:
> > > +Tom
> > > 
> > > Hi Angelo,
> > > 
> > > On 27 May 2018 at 01:22, Angelo Dureghello <angelo at sysam.it> wrote:
> > > > Hi Simon,
> > > >
> > > > On Sat, May 26, 2018 at 04:18:57PM -0600, Simon Glass wrote:
> > > >> Hi Angelo,
> > > >>
> > > >> On 3 May 2018 at 16:01, Angelo Dureghello <angelo at sysam.it> wrote:
> > > >> > To be able to build spi driver with DM support, a new config
> > > >> > option has been introduced (DM_NO_OF) since m68k architecture
> > > >> > does not support fdt.
> > > >> >
> > > >> > ---
> > > >> > Changes from v1:
> > > >> > - split into 2 patches
> > > >> >
> > > >> > Signed-off-by: Angelo Dureghello <angelo at sysam.it>
> > > >> > ---
> > > >> >  arch/Kconfig             |  1 +
> > > >> >  drivers/core/Kconfig     |  4 ++++
> > > >> >  drivers/spi/spi-uclass.c | 12 +++++++-----
> > > >> >  3 files changed, 12 insertions(+), 5 deletions(-)
> > > >> >
> > > >>
> > > >> Is it possible to use SPL_OF_PLATDATA instead?
> > > >>
> > > > I have seen that setting, but my understanding is that
> > > > SPL_OF_PLATDATA ws made for a different purpose, and also, i
> > > > tried to use it, but cannot select it from menuconfig.
> > > >
> > > >> How come m68k cannot use device tree?
> > > >>
> > > > There was never any devicetree implementation, probably becouse it
> > > > is missing on Linux too.
> > > 
> > > It is a real shame that we can't do better than that.
> > > 
> > > I've added Tom in for comment as I'm not sure what is best here.
> > 
> > Yeah, I think as sandbox shows, if/when we don't have to worry about
> > also Linux dts files, it's not a lot of work to populate up what's
> > required for just U-Boot, so long as we have the run-time space.  And if
> > not, that's what OF_PLATDATA is for.
> > 
> 
> About SPL_OF_PLATDATA, do you think i can change it to a more generic
> OF_PLATDATA, or GENERIC_OF_PLATDATA not dependant from SPL (i am not 
> using SPL) ?
> I also need to add "select SUPPORT_OF_CONTROL" for m68k arch.
> 
> Let me know if the above is ok, otherwise i start to work for the 
> devicetree option.

Really, we should probably go the device tree path first and see where
that gets us.  I think it'll be less work in the end.  Thanks!

-- 
Tom
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