Re: BSP 5.5 and dtb changes

["Jan Simon Moeller" <jsmoeller@xxxxxxxxxxxxxxxxxxx>]

So the current changes will be then:

for h3:
-{%- set dtb = dtb|default("r8a7795-h3ulcb-4x2g.dtb") %}
+{%- set dtb = dtb|default("r8a77951-ulcb-h3ulcb.dtb") %}

for m3:
-{%- set dtb = dtb|default("r8a7796-m3ulcb.dtb") %}
+{%- set dtb = dtb|default("r8a77960-ulcb-m3ulcb.dtb") %}

and respective -kf variants.

Best regards,
Jan-Simon

------
Jan-Simon Möller
AGL Release Manager
The Linux Foundation

Visit us at:
www.automotivegradelinux.org
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www.linuxfoundation.org

On Wed, Oct 13, 2021 at 4:54 PM Jan Simon Moeller via
lists.automotivelinux.org
<jsmoeller=linuxfoundation.org@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> Hi Kurokawa-san,
>
> thanks for the clarification. Please see the question below:
>
> On Wed, Oct 13, 2021 at 2:45 PM Harunobu Kurokawa
> <harunobu.kurokawa.dn@xxxxxxxxxxx> wrote:
> > Sorry inconvenience due to big change about dtb file name.
> > Since latest u-boot can detect memory size automatically then latest kernel doesn't prepare each memory size variation device-tree file.
> > moreover, we stopped to use "-es1" name.
> >
> > Regarding starter Kit and dtb relationship is described here.
> > https://elinux.org/R-Car/Boards/Yocto-Gen3/v5.5.0#Relationship_diagram_between_each_SK_board_and_DTB_file_in_Yocto_v5.5.0
> > Kingfisher case :
> > https://elinux.org/R-Car/Boards/Kingfisher/Yocto-Gen3/v5.5.0#Relationship_diagram_between_each_SK_board_and_DTB_file_in_Yocto_v5.5.0
> >
> > > # or should that be  r8a77861-ulcb ??
> > existing M3ulcb is ver1.0 then you(and CI) should use "r8a77960-ulcb*.dtb"
> >
> > > # 61 is correct ??
> > We will optimize them to reduce.
> >
> > > old: r8a7795-h3ulcb-4x2g.dtb
> > > new ???
> > > -->> Here we used to differ the dtb for the 4x2g variant with 8GB,
> > > this is no longer built - which one do I use now ?  <<--
> > If you/user update new u-boot, no need to prepare memory size variation.
> > Then, r8a77951-ulcb.dtb support both 4gb and 8gb starter Kit.
> Excellent. That is a great simplification.
>
> CI related question: So we need to reflash the firmware - ok no problem.
> Do you know if a newer u-boot from BSP 5.5 can boot an older
> kernel/dtb combination then ?
> Because if we reflash and run e.g. CI jobs for lamprey we would still
> use the old kernel/dtb combination.
>
> Best,
> Jan-Simon
>
>
> 
>
>


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