[yocto] [meta-raspberrypi][PATCH v6 0/4] Support for .dtbo files for dtb overlays, required by kernels 4.4.6+

[Khem Raj]

On Jul 31, 2016 12:48 PM, "Andrei Gherzan" <andrei at gherzan.ro> wrote:
>
> On Thu, Jul 28, 2016 at 06:41:25PM -0700, Khem Raj wrote:
> >
> > > On Jul 20, 2016, at 3:00 PM, Herve Jourdain <herve.jourdain at neuf.fr>
wrote:
> > >
> > > v6: rebased
> > >
> > > v5: modifications after more review
> > > * Added an Upstream-Status to the kernel patch
> > > * Only one instance of KERNEL_DEVICETREE defined (with the new .dtbo
syntax)
> > > * Modification of the KERNEL_DEVICETREE is done in
linux-raspberry-base.bbclass, based on the kernel version
> > >
> > > v4: rebased
> > > For kernels 4.4.9+, the behavior for the device tree overlays loading
has been modified on RaspberryPi.
> > > For overlays, it loads .dtbo files, not .dtb anymore.
> > > Also, it does not check for -overlay extension, so the name of the
overlay that is placed in the "overlays" directory must be
<overlay_name>.dtbo, instead of <overlay_name>-overlay.dtb.
> > >
> > > This patch addresses the issue for kernels 4.4+, while keeping the
same behavior for older kernels.
> > > This patch must be used in conjunction with another patch to
meta/recipes-kernel/linux-dtb.inc, which will allow the processing of .dtbo
files for overlays, instead of only .dtb like before.
> > >
> > > .dtb are still in use, but only for the "real" device trees (not the
overlays).
> >
> > I have staged this series in
> >
> > https://github.com/kraj/meta-raspberrypi kraj/master
> >
> > However, this all has to wait on two things.
> >
> > The OE-core patch
> >
> > https://patchwork.openembedded.org/patch/123747/
> >
>
> What is happening with this patch? So I can't merge these as long as
> this one is not merged.

Yes. I am working on upstreaming it. We have to wait until this goes in. I
have staged all rpi patches in my tree. So obe place to look for all
>
> > and we need to branch out for krogoth
> >
> > >
> > > Herve Jourdain (4):
> > >  linux-raspberrypi_4.4.bb: support for .dtbo files for dtb overlays
> > >  rpi-base.inc: support for .dtbo files for dtb overlays
> > >  linux-raspberrypi-base.bbclass: support for .dtbo files for dtb
> > >    overlays
> > >  sdcard_image-rpi.bbclass: support for .dtbo files for dtb overlays
> > >
> > > classes/linux-raspberrypi-base.bbclass             | 19 ++++++----
> > > classes/sdcard_image-rpi.bbclass                   | 15 +++++---
> > > conf/machine/include/rpi-base.inc                  | 30
+++++++--------
> > > .../0001-fix-dtbo-rules.patch                      | 44
++++++++++++++++++++++
> > > recipes-kernel/linux/linux-raspberrypi_4.4.bb      |  1 +
> > > 5 files changed, 81 insertions(+), 28 deletions(-)
> > > create mode 100644
recipes-kernel/linux/linux-raspberrypi-4.4/0001-fix-dtbo-rules.patch
> > >
> > > --
> > > 2.7.4
> > >
> > > --
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> >
>
>
>
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>
> --
> Andrei Gherzan
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