From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Meyer Subject: Re: No HDMI output on AC100 Date: Sun, 09 Jun 2013 10:31:10 +0200 Message-ID: <1370766670.2283.3.camel@localhost.localdomain> References: <1370680435.24531.12.camel@localhost.localdomain> <68C7110D-C493-4A1F-8011-5F9259C2F4E7@m3y3r.de> <1370707552.1829.4.camel@antimon.fritz.box> <2572002.IOA8y0azF4@ax5200p> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <2572002.IOA8y0azF4@ax5200p> Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Marc Dietrich Cc: linux-tegra , Lucas Stach List-Id: linux-tegra@vger.kernel.org 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 >