On Thu, May 19, 2016 at 01:25:34AM +0800, Herve Jourdain wrote: > Hi Khem, > > Well, it seems to be the way it will be activated in the future as well, > through a device tree overlay. > The rationale being that people may not want/need the VC4 driver, because > they prefer to use userland or other reasons, and that only the persons who > want to activate it will load the overlay. > One thing to remember is that vc4 has the potential to conflict with other > pieces, and it might not be for everybody (the firmware patch helps in that > regards, but before it, weston/drm was conflicting with the splash screen for > instance on my test setup, creating very disturbing images). > > If your question is, will userland disappear one day and vc4 graphics > becoming the only graphics driver, the overlay could be included in the base > device tree itself, in like a few years from now, then I clearly don't have > an answer to that... > > But I believe the overlay will stick some time around. >
I'm not sure if this is what Raj asked about. Needs some clarification.
> Herve
>
> > Le 19 mai 2016 à 00:53, Khem Raj <raj.k...@gmail.com> a écrit :
> >
> >
> >> On May 18, 2016, at 5:21 AM, Herve Jourdain <herve.jourd...@neuf.fr> wrote:
> >>
> >> This patch series enables the support for the VC4 graphics driver from
> >> Eric Anholt.
> >> Add vc4-kms-v3d overlay if 'vc4graphics' is in MACHINE_FEATURES.
> >> (This patch has a dependency on the patch that enables the support of
> >> .dtbo overlay files)
> >>
> >> Signed-off-by: Herve Jourdain <herve.jourd...@neuf.fr>
> >> ---
> >> recipes-bsp/bootfiles/rpi-config_git.bb | 8 ++++++++
> >> 1 file changed, 8 insertions(+)
> >>
> >> diff --git a/recipes-bsp/bootfiles/rpi-config_git.bb
> >> b/recipes-bsp/bootfiles/rpi-config_git.bb
> >> index 4bc8eb7..79e436d 100644
> >> --- a/recipes-bsp/bootfiles/rpi-config_git.bb
> >> +++ b/recipes-bsp/bootfiles/rpi-config_git.bb
> >> @@ -19,6 +19,8 @@ PITFT="${@bb.utils.contains("MACHINE_FEATURES", "pitft",
> >> "1", "0", d)}"
> >> PITFT22="${@bb.utils.contains("MACHINE_FEATURES", "pitft22", "1", "0", d)}"
> >> PITFT28r="${@bb.utils.contains("MACHINE_FEATURES", "pitft28r", "1", "0",
> >> d)}"
> >>
> >> +VC4GRAPHICS="${@bb.utils.contains("MACHINE_FEATURES", "vc4graphics", "1",
> >> "0", d)}"
> >> +
> >> inherit deploy
> >>
> >> do_deploy() {
> >> @@ -102,6 +104,12 @@ do_deploy() {
> >> echo "# Enable UART" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
> >> echo "enable_uart=1" >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
> >> fi
> >> +
> >> + # VC4 Graphics support
> >> + if [ "${VC4GRAPHICS}" = "1" ]; then
> >> + echo "# Enable VC4 Graphics"
> >> >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
> >> + echo "dtoverlay=vc4-kms-v3d,cma-256"
> >> >>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
> >> + fi
> >
> >
> > will this keep appending overtime ?
> >
> >> }
> >>
> >> addtask deploy before do_package after do_install
> >> --
> >> 2.7.4
> >>
> >> --
> >> _______________________________________________
> >> yocto mailing list
> >> yocto@yoctoproject.org
> >> https://lists.yoctoproject.org/listinfo/yocto
> >
> --
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