[Buildroot] Requirements for QML in RPi4
Peter Seiderer
ps.report at gmx.net
Tue Jan 28 07:38:24 UTC 2020
Hello Andrea,
please keep buildroot at busybox.net on CC
On Mon, 27 Jan 2020 21:11:21 +0100, Andrea Simeoni <andreasimeoni73 at gmail.com> wrote:
> I rebuilt the image with the attached config file.
> Now I don't get the error about DRM but... nothing happens. I run a QML
> application (the default example) but on the screen I can still read the
> console output.
Thats bad....and sorry no more help from my side as I have not (yet) an
RPi4 hardware to test myself ;-)
Regards,
Peter
>
> Here the modules loaded:
>
> # lsmod
> Module Size Used by
> evdev 24576 1
> joydev 20480 0
> brcmfmac 315392 0
> brcmutil 16384 1 brcmfmac
> sha256_generic 20480 0
> bcm2835_codec 36864 0
> bcm2835_v4l2 45056 0
> v4l2_mem2mem 24576 1 bcm2835_codec
> cfg80211 610304 1 brcmfmac
> bcm2835_mmal_vchiq 32768 2 bcm2835_codec,bcm2835_v4l2
> raspberrypi_hwmon 16384 0
> hwmon 16384 1 raspberrypi_hwmon
> videobuf2_dma_contig 20480 1 bcm2835_codec
> rfkill 28672 1 cfg80211
> v4l2_common 16384 1 bcm2835_v4l2
> videobuf2_vmalloc 16384 1 bcm2835_v4l2
> videobuf2_memops 16384 2 videobuf2_dma_contig,videobuf2_vmalloc
> videobuf2_v4l2 24576 3 bcm2835_codec,bcm2835_v4l2,v4l2_mem2mem
> videobuf2_common 45056 4
> bcm2835_codec,bcm2835_v4l2,v4l2_mem2mem,videobuf2_v4l2
> videodev 200704 6
> bcm2835_codec,v4l2_common,videobuf2_common,bcm2835_v4l2,v4l2_mem2mem,videobuf2_v4l2
> media 36864 3 bcm2835_codec,videodev,v4l2_mem2mem
> vc_sm_cma 36864 1 bcm2835_mmal_vchiq
> rpivid_mem 16384 0
> fixed 16384 0
> rpi_ft5406 16384 0
> rpi_backlight 16384 0
> uio_pdrv_genirq 16384 0
> uio 20480 1 uio_pdrv_genirq
> sch_fq_codel 20480 6
> ipv6 458752 24
>
>
> Il giorno lun 27 gen 2020 alle ore 17:38 Andrea Simeoni <
> andreasimeoni73 at gmail.com> ha scritto:
>
> >
> > You seem to have a RPi4-64bit config, trying to run
> >> mesa vc4?
> >>
> >
> > IIRC it was needed to get accelerated GPU.
> >
> >
> >
> >> dtoverlay=vc4-fkms-v3d
> >>
> >
> > Unfortunately it doesn't work. I read the links, and the situation seems a
> > bit confusing.
> >
> >
> > Alternatively your can try RPi4-32bit and enable
> >> rpi-userland/BR2_PACKAGE_RPI_USERLAND
> >> instead of mesa...
> >>
> >
> > I don't need 64-bit but I need QML+GPU. I'm going to try RPi4+32bit w/
> > userland.
> > I hope it will works! I will report the results.
> >
> >
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