Is there an i.MX8 HDMI TX driver that works with Etnaviv?

[Guido Günther]

Hi,
On Sat, Jan 25, 2020 at 07:00:58PM -0800, Chris Healy wrote:
> Hi Bero,
> 
> NXP has a 5.4 kernel tree with DCSS driver and HDMI driver that might
> work with the 5.5-rc7 tree you have.  You can find it here:
> 
> https://source.codeaurora.org/external/imx/linux-imx/tree/drivers/gpu/drm/imx?h=imx_5.4.0_8dxlphantom_er

I've brought over the dcss (hdmi) related bits on a next-20200108 branch
for my testing a while ago

   https://source.puri.sm/guido.gunther/linux-imx8/commits/experiment/next-20200108/dcss-hdmi/v0-wip

This might be a bit simpler than sorting things out of NXPs tree.
For mesa you need

   https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3449

Cheers,
 -- Guido

> 
> Regards,
> 
> Chris
> 
> On Sat, Jan 25, 2020 at 6:49 PM Bernhard Rosenkraenzer <bero at lindev.ch> wrote:
> >
> > Hi,
> > I'm trying to get etnaviv up and running on an i.MX8 based Hummingboard Pulse, on top of kernel 5.5-rc7.
> > Everything looks good, etnaviv loads and recognizes the GC7000 correctly:
> >
> > [Sun Jan 26 00:32:40 2020] etnaviv etnaviv: bound 38000000.gpu (ops gpu_ops [etnaviv])
> > [Sun Jan 26 00:32:40 2020] etnaviv-gpu 38000000.gpu: model: GC7000, revision: 6214
> > [Sun Jan 26 00:32:40 2020] [drm] Initialized etnaviv 1.3.0 20151214 for etnaviv on minor 0
> >
> > Opening /dev/dri/card0 etc. works too - but of course there's no signal on the HDMI port given there's no HDMI TX driver in 5.5-rc7 (at least none that I could find).
> > Is there any out of tree driver that will work (or could be made work) on 5.5 without insane amounts of effort?
> >
> > Thanks
> > bero
> >
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