[yocto] [meta-raspberrypi][PATCH 5/8] Support for vc4 graphics driver: upgrade 4.4 kernel to 4.4.10

[Andreas Müller]

On Wed, May 18, 2016 at 11:46 PM, Andreas Müller
<schnitzeltony at googlemail.com> wrote:
> On Wed, May 18, 2016 at 7:32 PM, Herve Jourdain <herve.jourdain at neuf.fr> wrote:
>> One thing I didn't make configurable, but that maybe could be, is the parameter passed to the overlay.
>> I selected cma-256, based on experience from other people, and because my configuration is RPI2/3 with 1G of memory.
>> I realize it might not work well with RPI0/1, which have less memory available...
>> So even if I believe cma-256 is a good default value, it might be made selectable by the user, if we want to consider vc4 on RPI0/1.
> I played around with vc4 to but did not manage to get it work for an
> elder version 4.1 of kernel.
what I meant: did only work for elder 4.1 - not current 4.1
>
> I did in rpi-config:
>
> CMA_SIZE = "cma-256"
> CMA_SIZE_raspberrypi = "cma-64"
> CMA_SIZE_raspberrypi0 = "cma-128"
> ...
> echo "dtoverlay=vc4-kms-v3d-overlay,${CMA_SIZE}"
>>>${DEPLOYDIR}/bcm2835-bootfiles/config.txt
>
> This is nothing but an untested suggestion.
>
> Without testing your series I would be very happy to see this or very
> similar applied in master: Since vc4 works, RaspberryPi turned into my
> reference test board - e.g. have not seen kde5 running that nice on
> another board..
>
> Andreas