Re: No HDMI output on AC100

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Am Samstag, den 08.06.2013, 22:07 +0200 schrieb Marc Dietrich:
> On Saturday 08 June 2013 18:05:52 Lucas Stach wrote:
> > Am Samstag, den 08.06.2013, 16:21 +0200 schrieb Thomas Meyer:
> > > > On Saturday 08 June 2013 10:33:55 Thomas Meyer wrote:
> > > >> Kernel version: 3.10.0-0.rc4.git0.1.fc20.armv7hl
> > > >> 
> > > >> This is the latest Fedora ARM kernel. Config is available here:
> > > >> http://pkgs.fedoraproject.org/cgit/kernel.git/tree/config-armv7
> > > >> 
> > > >> This is what I see in the kernel log:
> > > >> 
> > > >> $ dmesg |grep hdmi
> > > >> [   33.403417] tegra-hdmi 54280000.hdmi: failed to get VDD regulator
> > > >> [   33.403441] platform 54280000.hdmi: Driver tegra-hdmi requests probe
> > > >> 
> > > >> any ideas?
> > > > 
> > > > is the regulator (tps6586x) build-in?
> > > 
> > > No, it's a module.
> > > 
> > > > The make everything a module path isn't
> > > > well tested I guess.
> > 
> > It's not the problem here. The driver requests to be probed again and
> > comes up once the regulator is there.
> > 
> > Though the pixel clock looks odd for a HD HDMI monitor. Try looking at
> > the Xorg log to see what mode of your monitor get's chosen and why it
> > fails.
> 
> I just checked myself. Found that tps6586x-regulator module can't be 
> autoloaded, so I connected my TV, booted and modprobed the module by hand.
> All works more or less fine, so probe deferral is no problem.

I did also notice, that the module needs to loaded manually, so I put it
in /etc/modules-load.d/regulator.conf to let systemd load it on every
start.

> 
> Thomas, did you add cma=64M to you kernel command line? HDMI needs some 
> memory.

yes, I tried with cma=64M and without the cma option, but no success.

> 
> Marc
> 



--
To unsubscribe from this list: send the line "unsubscribe linux-tegra" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [ARM Kernel]     [Linux ARM]     [Linux ARM MSM]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux