From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thierry Reding Subject: Re: [PATCH 4/9] ARM: tegra: Add host1x, DC and HDMI to Tegra114 device tree Date: Tue, 8 Oct 2013 13:04:05 +0200 Message-ID: <20131008110404.GF19633@ulmo.nvidia.com> References: <1381146528-18069-1-git-send-email-treding@nvidia.com> <1381146528-18069-5-git-send-email-treding@nvidia.com> <52532546.1010506@wwwdotorg.org> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="Pql/uPZNXIm1JCle" Return-path: Content-Disposition: inline In-Reply-To: <52532546.1010506-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org> Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Stephen Warren Cc: linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Mikko Perttunen List-Id: linux-tegra@vger.kernel.org --Pql/uPZNXIm1JCle Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Oct 07, 2013 at 03:19:02PM -0600, Stephen Warren wrote: > On 10/07/2013 05:48 AM, Thierry Reding wrote: > > From: Mikko Perttunen > >=20 > > Add host1x, DC (display controller) and HDMI devices to Tegra114 > > device tree. >=20 > > diff --git a/arch/arm/boot/dts/tegra114.dtsi b/arch/arm/boot/dts/tegra1= 14.dtsi >=20 > > + dc@54200000 { > > + compatible =3D "nvidia,tegra114-dc", "nvidia,tegra20-dc"; >=20 > Is the HW really 100% backwards-compatible, such that any driver that > only knew about the Tegra20 HW could work unmodified on Tegra114? > Perhaps that's possible, since your large driver patch doesn't seem to > have a patch to add Tegra114 DC support... AFAIK the DC hasn't changed since Tegra20. Or at least not significantly enough that it doesn't work with the generic driver. There might be more features, but nothing backwards incompatible. Thierry --Pql/uPZNXIm1JCle Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAEBAgAGBQJSU+akAAoJEN0jrNd/PrOhAygP/2plbC5F6z47dUBVg58gzdqS Es0lE4keVxVR2uzCocIUPCP2/42aglP+xlQi0xCaMTVlKEZw0F8CUnO09S5IfYS4 kXkyI5S8TuDIMjFfUY8LPo7wA1byB6wifJrdqzdnX3YPjexnw1Ry1aD7PopcV3xk EuW07eKh7npDyASdRsqnHrCiZvumit/rAEcuTQFhf9wBS9JoTsJ4iB+BU0yv3b53 8dSR13b+C8AjUnAlqsJdtirifjtvYnmgbAUX6XjA1xvIJsygAyKTL5s0ZCiYPL2x iZeKnimaD6m5VzQvFd/kXvjwaTdmNjCszZvLYt+Pgn8mazIWUcYNEBkBz0T30edM 9VplLK3u794FRHm52JnFDik4YmJGAXbCI0Sf95anV8RpN1oN2I8SvpEx39CbnB0/ BoKaxdxqBFbAtYtJsm9vLB3zKf2w4Va4ZdCEcIgY4kEqNvOsYjmpYfQ76lY7isOS 3OTlQJ9xnMkrXXM9UfTHiqPCxnrm8wa+/kTLv0Qx/MuDvtdbkEG0uX4sKKT40f7U onVECg8n457MDs1gB/0UB1DxVwqInlyEWVqEEd68xbw9VnoA6psUamdG/TD/ZOFH m8pCKzCgcDDVn9PiOjJfOmGYPdhzNzpkAQZ/TI35GaKXjb08dxOBgYG1g+94SyVj DdSUv4JxUBDr3p0JRovO =O7K0 -----END PGP SIGNATURE----- --Pql/uPZNXIm1JCle--