From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tomi Valkeinen Subject: Re: [RFC PATCH] [media]: of: move graph helpers from drivers/media/v4l2-core to drivers/of Date: Sat, 8 Mar 2014 12:57:06 +0200 Message-ID: <531AF782.5080801@ti.com> References: <1392119105-25298-1-git-send-email-p.zabel@pengutronix.de> < CAL_Jsq+U9zU1i+STLHMBjY5BeEP6djYnJVE5X1ix-D2q_zWztQ@mail.gmail.com> < 20140217181451.7EB7FC4044D@trevor.secretlab.ca> <20140218070624.GP17250@ pengutronix.de> <20140218162627.32BA4C40517@trevor.secretlab.ca> < 1393263389.3091.82.camel@pizza.hi.pengutronix.de> <20140226110114. CF2C7C40A89@trevor.secretlab.ca> <1393426129.3248.64.camel@paszta.hi. pengutronix.de> <530EF914.3000407@ti.com> <20140307170645.CE50DC40A1B@trevor.secretlab.ca> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="lfSvpLQODLCNjnDX4EBJCJBLVdb4h0r6v" Return-path: In-Reply-To: <20140307170645.CE50DC40A1B@trevor.secretlab.ca> Sender: linux-kernel-owner@vger.kernel.org To: Grant Likely , Philipp Zabel Cc: Sascha Hauer , Rob Herring , Russell King - ARM Linux , Mauro Carvalho Chehab , Rob Herring , Sylwester Nawrocki , Laurent Pinchart , Kyungmin Park , "linux-kernel@vger.kernel.org" , "linux-media@vger.kernel.org" , "devicetree@vger.kernel.org" , Philipp Zabel List-Id: devicetree@vger.kernel.org --lfSvpLQODLCNjnDX4EBJCJBLVdb4h0r6v Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable On 07/03/14 19:06, Grant Likely wrote: > On Thu, 27 Feb 2014 10:36:36 +0200, Tomi Valkeinen wrote: >> On 26/02/14 16:48, Philipp Zabel wrote: >> >>>> I would like the document to acknowledge the difference from the >>>> phandle+args pattern used elsewhere and a description of when it wou= ld >>>> be appropriate to use this instead of a simpler binding. >>> >>> Alright. The main point of this binding is that the devices may have >>> multiple distinct ports that each can be connected to other devices. >> >> The other main point with this binding are multiple endpoints per port= =2E >> So you can have, say, a display controller, with single port, which ha= s >> two endpoints going to two separate LCD panels. >> >> In physical level that would usually mean that the same pins from the >> display controller are connected to two panels. Most likely this would= >> mean that only one panel can be used at a time, possibly with differen= t >> settings (say, 16 RGB pins for one panel, 24 RGB pins for the other). >=20 > What device is in control in that scenario? The endpoints in a single port are exclusive, only one can be active at a time. So the control for the active path would be no different than in single panel case (for which people have different opinions). Tomi --lfSvpLQODLCNjnDX4EBJCJBLVdb4h0r6v Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBAgAGBQJTGveCAAoJEPo9qoy8lh71R74P+gIz+WGE6WfW2fMVMXiVQf84 +VoyCY9AKmAJiugsQJAEZnm9Wsm7KQhs/6NH6orR77AOOgzl7nXxFgpWT/UiCeIE uHisz0+OZDGPyswsrRhin2iQRJlPoAexsiHHMuvpBjIBO5UbGjNkxPuCBcZeg7Q8 sUYQFnr1mn3b8uh4o6lmAX2o/FJNqxIQvJ4OqCzLeckYStHDQ+zQARi5oVC90AjZ XXZGVroUJ9ygIKpkF3xjZ55xVUNGzC80UnD6J/4WWr4orLrRay4vCMOJLVC2ygwH X+t92C1HxYWnF7j3cjl7vCrTIXOJkJKTz/WedhZtiSc8pA6sjh2W10+/tR4k3acT 12wedIemZrVu4vR21twy4isdYK2z2U401ZLr+QUh4kazJauheohBaMRqKG/7A+k+ 0MosFuBAGhH9YdNzmtqkGbrlWDCX3ak7nHSPmhT9y75m57H+PpdQj5LtGoVZ6h6/ 6fJv7CGT6mAsCGiY7WuiawpDSgbyRsRF9dipJA1VMxIosOLEp1UCG0KKpUox9eX5 UP6xV7QPp+xwePs/LdSCKRfTJz2QVSCNvtrSi/9SnCxqh8jve+9KMxK2rYBtWZe0 OKmQB6Ie+y7ZD7vUJjTQTNZTultu5fnauHP4phIjB5Xzl1Y8Atlp+5l/atCD9TMw nSkVMHQqpvBJhHIt3ltw =831F -----END PGP SIGNATURE----- --lfSvpLQODLCNjnDX4EBJCJBLVdb4h0r6v--