From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tomi Valkeinen Subject: Re: [PATCH V7 11/12] Documentation: bridge: Add documentation for ps8622 DT properties Date: Tue, 23 Sep 2014 14:31:35 +0300 Message-ID: <54215A17.8050606@ti.com> References: <1409150399-12534-1-git-send-email-ajaykumar.rs@samsung.com> <5419760A.7020908@ti.com> <5419B52D.4060107@ti.com> <20140922080629.GC1470@ulmo> <542030DD.3060906@ti.com> <20140923060452.GD30514@ulmo> <54213543.7000306@ti.com> <20140923093916.GR30514@ulmo> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="iOhc9gDveE6KeQx1KUdtGl57Q11mAl98r" Return-path: In-Reply-To: <20140923093916.GR30514@ulmo> Sender: linux-samsung-soc-owner@vger.kernel.org To: Thierry Reding Cc: Ajay kumar , Ajay Kumar , InKi Dae , "dri-devel@lists.freedesktop.org" , "linux-samsung-soc@vger.kernel.org" , "devicetree@vger.kernel.org" , Rob Clark , Daniel Vetter , Sean Paul , Jingoo Han , sunil joshi , Prashanth G , Laurent Pinchart List-Id: devicetree@vger.kernel.org --iOhc9gDveE6KeQx1KUdtGl57Q11mAl98r Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable On 23/09/14 12:39, Thierry Reding wrote: > My point is that if you use plain phandles you usually have the > meta-data already. Referring to the above example, bridge0 knows that i= t > should look for a bridge with phandle &bridge1, whereas bridge1 knows > that the device it is connected to is a panel. The bridge should not care what kind of device is there on the other end. The bridge just has an output, going to another video component. >> Well, I can't say about this particular bridge, but afaik you can >> connect a parallel RGB signal to multiple panels just like that, witho= ut >> any muxing. >=20 > Right, but in that case you're not reconfiguring the signal in any way > for each of the panels. You send one single signal to all of them. For Yes, that's one use case, cloning. But I was not talking about that. > all intents and purposes there is only one panel. Well, I guess you > could have separate backlights for the panels. In that case though it > seems better to represent it at least as a virtual mux or bridge, or > perhaps a "mux panel". I was talking about the case where you have two totally different devices, let's say panels, connected to the same output. One could take a 16-bit parallel RGB signal, the other 24-bit. Only one of them can be enabled at a time (from HW perspective both can be enabled at the same time, but then the other one shows garbage). Tomi --iOhc9gDveE6KeQx1KUdtGl57Q11mAl98r 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 iQIcBAEBAgAGBQJUIVoXAAoJEPo9qoy8lh71pBwQAJPxNFrzypbdnDNTwHey5jn0 R4rHlE1UGl3FdMifVL7HR2Nb0YG5GwrUmWGUwzbCLrX8OsUlefNopeLi5TGu5oBP t69htKvuP1im56zYFVPTGtRwHGh7VRvRapCg1kLTV89hn/zjLCKwTODAbbNmtQ+h ozfNSL+QXFictxpYABlCV79dvR/c7Zg5V5z9i1tjhnqOpXOwVcgmArl9drdsMliF 0Nu19Mgx12OJlEk2XdNwur8JOIUtE/u6J7eTsCrgyCSizzcKnNaKKm5IS1RnSF07 WvHUh8vMZne9Ymc87zscMdTK2YH+NSObbgZJYUbrnoxvrU1+vqTOmit54MBC1uuK R87dp8oJM7ouijDrimhjL6APdyLcgPDnC4tlkWNRSjaidoAhbZiWNpZGAo5tGUi6 SK0hj7Ahn4QmBl21yMoosxLwStxGHEE0UO0qedqXjmAfknEpIfASPZ09VJlhR9LR QfrlvuZcC98M8HGAkblWYXtlodlwD99FgH8JFhV2+8hx3mzLPDQUa2rEy0Tq+Nyi 82P3EjeFTTbcYbPxMl8JvB094ZxtJAllUSAgKSVgrf4/y9MB2tcrYJ3ABPsq5Tlg fQCoLHROfLWbM1hf0lTH9iihD1oMc/n5LkxeNl3tFJDSAbtWHjK1bhUH83GEdjXA K03aM8hlalJ2/ZBXhAx4 =qIaK -----END PGP SIGNATURE----- --iOhc9gDveE6KeQx1KUdtGl57Q11mAl98r--