From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:42370 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750827AbdAKWxj (ORCPT ); Wed, 11 Jan 2017 17:53:39 -0500 Date: Wed, 11 Jan 2017 23:53:35 +0100 From: Pavel Machek To: robh+dt@kernel.org, devicetree@vger.kernel.org, ivo.g.dimitrov.75@gmail.com, sakari.ailus@iki.fi, sre@kernel.org, pali.rohar@gmail.com, linux-media@vger.kernel.org Subject: [PATCHv2] dt: bindings: Add support for CSI1 bus Message-ID: <20170111225335.GA21553@amd> References: <20161228183036.GA13139@amd> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="OgqxwSJOaUobr8KG" Content-Disposition: inline In-Reply-To: <20161228183036.GA13139@amd> Sender: linux-media-owner@vger.kernel.org List-ID: --OgqxwSJOaUobr8KG Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable =46rom: Sakari Ailus In the vast majority of cases the bus type is known to the driver(s) since a receiver or transmitter can only support a single one. There are cases however where different options are possible. The existing V4L2 OF support tries to figure out the bus type and parse the bus parameters based on that. This does not scale too well as there are multiple serial busses that share common properties. Some hardware also supports multiple types of busses on the same interfaces. Document the CSI1/CCP2 property strobe. It signifies the clock or strobe mode. =20 Signed-off-by: Sakari Ailus Signed-off-by: Ivaylo Dimitrov Signed-off-by: Pavel Machek diff --git a/Documentation/devicetree/bindings/media/video-interfaces.txt b= /Documentation/devicetree/bindings/media/video-interfaces.txt index 9cd2a36..08c4498 100644 --- a/Documentation/devicetree/bindings/media/video-interfaces.txt +++ b/Documentation/devicetree/bindings/media/video-interfaces.txt @@ -76,6 +76,11 @@ Optional endpoint properties mode horizontal and vertical synchronization signals are provided to the slave device (data source) by the master device (data sink). In the mast= er mode the data source device is also the source of the synchronization si= gnals. +- bus-type: data bus type. Possible values are: + 0 - MIPI CSI2 + 1 - parallel / Bt656 + 2 - MIPI CSI1 + 3 - CCP2 - bus-width: number of data lines actively used, valid for the parallel bu= sses. - data-shift: on the parallel data busses, if bus-width is used to specify= the number of data lines, data-shift can be used to specify which data lines= are @@ -112,7 +117,8 @@ Optional endpoint properties should be the combined length of data-lanes and clock-lanes properties. If the lane-polarities property is omitted, the value must be interpreted as 0 (normal). This property is valid for serial busses only. - +- strobe: Whether the clock signal is used as clock or strobe. Used + with CCP2, for instance. =20 Example ------- --=20 (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo= g.html --OgqxwSJOaUobr8KG Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iEYEARECAAYFAlh2t28ACgkQMOfwapXb+vIINgCgueEw4j3V6VYxvch0HxpyBvq7 d8IAn3flrg3hAddXCR4AnmIYIwa49pRm =Nhjo -----END PGP SIGNATURE----- --OgqxwSJOaUobr8KG--