From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tomi Valkeinen Subject: Re: [RFC PATCH v2 19/21] ARM: dts: exynos5250-arndale: add dsi and panel nodes Date: Fri, 28 Feb 2014 15:39:31 +0200 Message-ID: <53109193.3000604@ti.com> References: <1392204688-4591-1-git-send-email-a.hajda@samsung.com> <1392204688-4591-20-git-send-email-a.hajda@samsung.com> <53108FA0.4040903@ti.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="cF11C8lwJM8WMCg76f93oljBterlDBcrT" Return-path: In-Reply-To: <53108FA0.4040903@ti.com> Sender: linux-samsung-soc-owner@vger.kernel.org To: Tomi Valkeinen , Andrzej Hajda , dri-devel@lists.freedesktop.org Cc: Mark Rutland , devicetree@vger.kernel.org, linux-samsung-soc@vger.kernel.org, Pawel Moll , Ian Campbell , Kyungmin Park , Rob Herring , Kumar Gala , Grant Likely , Sean Paul , Marek Szyprowski List-Id: devicetree@vger.kernel.org --cF11C8lwJM8WMCg76f93oljBterlDBcrT Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable On 28/02/14 15:31, Tomi Valkeinen wrote: > Compared to what I've done on OMAP, you don't seem to specify the video= > inputs for the tc358764 at all. In this case it's obvious, as the chip > is a child of the DSI master. But the chip could as well be controlled > via i2c, and so be placed as a child of the i2c nodes. >=20 > So even if the driver doesn't use it, maybe it would be more future > proof to have both input and output endpoints for the tc358764? Oh, and one addition: how me and Laurent see the DSI case (and other similar ones), the child/parent relationship gives the control bus path, and the video ports give the video data path. So both are always needed. A DSI panel may be controlled via DSI, i2c, spi, but the video path will always go from DSI master to the panel. Or, as a theoretical panel, you could have a DSI controlled panel, being a child of the DSI master, but the video data would come via, say, parallel RGB. You can actually do that with some panels/encoders, even if the concept is silly. Tomi --cF11C8lwJM8WMCg76f93oljBterlDBcrT 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/ iQIcBAEBAgAGBQJTEJGTAAoJEPo9qoy8lh71RckP/icrlE5FJgK0Uewo3eIESEPc oJQh3AceTcn/OcAISmD6vsN5lTzfK6n3fWakgRrJiNSGFCIiPgOqz154Qf7aQs31 iSRD4GXNMvFubcyjzfWtHpPa8kqlO5Mf9VcPdjOyzTsam7uAlmXVDpBfvLQq9fE4 B2K2A8B7vHkebe3r26rDWCJnx7WM7PqY10LqEBjgUeo8k4hcvOpLaKOen3iiIdpE Vb0Zm/qnH1h4qBre9hEse7mjdS3qeIsyfqGRBIJXKP2K/XtDfLj/sc0ntHiMA8uI OcbUvv9S24UT6mdZ4hvWR/hEaEnNXYPKG6ao2Q7NHekq1GotoRrE2z0fpErg895w slvYHAUTz/PAHiX972DsfVqfCguGuP6qaTPncr2fxJ2oMunXhYSmr+DXoTt1Vt3j KZwx+//fGVsDlB2Fs5997yTTY02wGrTApEF+JlxotoV3X9lA4So5wzo5iM4w1Mre DxC5ADswA256EFKn0VBJRyJs+Liu4HCcIp/a8vwql/Vj6TFtUzbz7bgYQM+38HVW dumaS0n3hAmQD95GTSx21buo0rS76iIQiGTf4/QKMFu1mUiO6NmaJ3VqNFdG1vQh j60F/hHcSBT1/HFK5Q854oBRIo3MKcnogG9wjijVdHjE57qtTjVsAL7B/1B8Y74l 6ucxcdAMRWg/gBEQu8wJ =LRtp -----END PGP SIGNATURE----- --cF11C8lwJM8WMCg76f93oljBterlDBcrT--