From mboxrd@z Thu Jan 1 00:00:00 1970 From: Maxime Ripard Subject: Re: [PATCH RFC 0/2] Add a display driver to the Allwinner H3 Date: Mon, 18 Jan 2016 11:18:27 +0100 Message-ID: <20160118101827.GO4581@lukather> References: <20160106212046.GD9631@lukather> <20160108181306.4a5a7370f0e3f3daa7c9e285@free.fr> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============4572824626014173360==" Return-path: In-Reply-To: <20160108181306.4a5a7370f0e3f3daa7c9e285@free.fr> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Jean-Francois Moine Cc: Dave Airlie , Emilio =?iso-8859-1?Q?L=F3pez?= , Chen-Yu Tsai , linux-arm-kernel@lists.infradead.org, dri-devel@lists.freedesktop.org List-Id: dri-devel@lists.freedesktop.org --===============4572824626014173360== Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="eBTWNsZZiigckDWV" Content-Disposition: inline --eBTWNsZZiigckDWV Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Hi, On Fri, Jan 08, 2016 at 06:13:06PM +0100, Jean-Francois Moine wrote: > On Wed, 6 Jan 2016 22:20:46 +0100 > Maxime Ripard wrote: >=20 > > > As there is no documentation about the DE2 nor about the HDMI which > > > are found in the H3, this driver has been built from Allwiiner's > > > sources. > >=20 > > That's unfortunate :/ > >=20 > > Have you checked in the A64 BSP if there was some useful information? >=20 > Same as the H3: no more information about the display system. Too bad... > > > So, there may be license problems, especially for the file > > > de2_hdmi_h3.c which contains a lot of magic values. > >=20 > > I guess it's the biggest issue with your code right now. What licenses > > issues are we talking about here? >=20 > The documentation about the H3, as the other Allwinner documentations, > starts with: >=20 > This documentation is the original work and copyrighted > property of Allwinner Technology ("Allwinner"). Reproduction in > whole or in part must obtain the written approval of Allwinner > and give clear acknowledgement to the copyright owner. I'm not sure this one is an issue. This datasheet is available publicly, and it's common to have a datasheet with restrictions (or even an NDA). > Then, the DE2 sources contain only: >=20 > All Winner Tech, All Right Reserved. 2014-2015 Copyright (c) >=20 > Eventually, there is no copyright/author/history in the HDMI sources. That one is nasty though :/ It seems to be a GPL violation though, so we have two solutions: A) have a clean room implementation B) Ask allwinner to comply with the license The former doesn't look likely to happen soon... Can you open an issue on this on their linux github repo? Thanks! Maxime --=20 Maxime Ripard, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com --eBTWNsZZiigckDWV Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJWnLvyAAoJEBx+YmzsjxAgEzEQAMJ1KG4jGFudnZyXiZwEDZW+ 7e96b7qL6ogWGSR8WaU5FfLIGOd1fXTHRT34ZtmuRPTdFljvAiWnm85JunPLw6yE ncgOxUYpOIruA6DkGGCXO3aiV0w/Frl3OT0IL7nwa6JPNQcZyGbkQsdOJw5Y0YQP 7fsyzNwkeSVp+3N7T1C0SjGwfoTFTPowt4+ED2mgjKDEIke7vzG/NJy0eI7SYr9n V/wkuarprgUN/9VzPqDcvGA2FtADbvFqNzDwbfE/NcDqUL/0hC6RjZJCflzjuupZ V8NGVHCBzqkCOtmEFt/ZncRdu/QAGfqRaxRK0OwtSgquWTgOvdbIJxYMSGU+F3Qr zl81oiFZ2fxHZCxG1fpBegOPn+0/dRH/85kriEJAYqzVJORLdMMW/XsnuR03UFWq TeXaQtYDucNT1O/odEZveaFGEtqcsMj5rGd4wv8tXdW2rxnQyyoSX0bw8G7tS/LP 4P8lDD0En68Yc4V+n5CirM0Nmq/vKii8trSYD66bBwr33+1xglOW7dAzrHip6MkP 7n9IwjLY5CSoQclABDXJKtWnd5HuKWMuwa7hDOhzGhOIV/mYz5/joimzZh/juxQl zWVrZ++fQqX2aSP0ZjhdAVM61xIkVEqIEWHSj9RXOE6aDrrGqrkyMBlv/T/FTpC3 QSEjHa990KUYPu/HYqgm =P5k5 -----END PGP SIGNATURE----- --eBTWNsZZiigckDWV-- --===============4572824626014173360== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel --===============4572824626014173360==--