[U-Boot] [PATCH 1/2] fdt: Allow indicating a node is for U-Boot proper only

[Patrick DELAUNAY]

Hi Marek and Simon

> From: Patrick DELAUNAY
> Sent: vendredi 8 février 2019 13:47
> 
> Hi Marek,
> 
> > From: Marek Vasut <marex at denx.de>
> > Sent: jeudi 7 février 2019 18:48
> >
> > On 2/7/19 6:40 PM, Patrick DELAUNAY wrote:
> > > Hi Marek,
> > >
> > >> From: Marek Vasut <marex at denx.de>
> > >> Sent: mardi 5 février 2019 09:55
> > >>
> > >> On 2/4/19 3:40 PM, Simon Glass wrote:
> > >>> On Mon, 4 Feb 2019 at 03:15, Patrick Delaunay
> > >>> <patrick.delaunay at st.com>
> > >> wrote:
> > >>>>
> > >>>> This add missing parts for previous commit 06f94461a9f4
> > >>>> ("fdt: Allow indicating a node is for U-Boot proper only")
> > >>>>
> > >>>> At present it is not possible to specify that a node should be
> > >>>> used before relocation (in U-Boot proper) without it also ending
> > >>>> up in SPL and TPL device trees. Add a new "u-boot,dm-pre-proper"
> > >>>> boolean property
> > >> for this.
> > >>>>
> > >>>>
> > >>>> Signed-off-by: Patrick Delaunay <patrick.delaunay at st.com>
> > >>>
...
> > > NB: we could also remove the tags u-boot,dm-pre-reloc/u-boot,dm-spl
> > > : we
> > can gain place in spl dtb
> > >        These tags are not needed as binding is mandatory in SPL
> > > build for ALL
> > node  present in SPL device tree
> > >       others node are cleaned by fdtgrep (but impact in SPL code)
> 
> Finally I will sent a patch for this proposal (today I hope) => On my board
> stm32mp1-ev1, the SPL device tree is reduced by 790 bytes

FYI: patch sent with http://patchwork.ozlabs.org/patch/1039756/

> NB: side effect on the patch, we only need to TAG the children (all node are
> bounded in SPL)
>         That improve the next point.

After test, the phandle of the parent node is remove when the tag preloc or spl is not present.... 
So the need to tag all the DT tree  is not solved.

Regards
Patrick