From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thierry Reding Subject: Re: [PATCH v5 2/2] drm/i915: Check DP no aux transaction bit on link training Date: Mon, 4 Jan 2016 18:27:54 +0100 Message-ID: <20160104172754.GC29079@ulmo> References: <1450697955-14830-1-git-send-email-mika.kahola@intel.com> <1450697955-14830-3-git-send-email-mika.kahola@intel.com> <20151222155341.GA1128@wunner.de> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============1968341967==" Return-path: Received: from mail-wm0-f67.google.com (mail-wm0-f67.google.com [74.125.82.67]) by gabe.freedesktop.org (Postfix) with ESMTPS id 933F56E4E0 for ; Mon, 4 Jan 2016 09:27:57 -0800 (PST) Received: by mail-wm0-f67.google.com with SMTP id b14so25438044wmb.1 for ; Mon, 04 Jan 2016 09:27:57 -0800 (PST) In-Reply-To: <20151222155341.GA1128@wunner.de> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Lukas Wunner Cc: intel-gfx@lists.freedesktop.org List-Id: intel-gfx@lists.freedesktop.org --===============1968341967== Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="bAmEntskrkuBymla" Content-Disposition: inline --bAmEntskrkuBymla Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Dec 22, 2015 at 04:53:41PM +0100, Lukas Wunner wrote: > Hi Mika, >=20 > On Mon, Dec 21, 2015 at 01:39:15PM +0200, Mika Kahola wrote: > > Check if no AUX transactions are required on DP link training. > > If this bit is set, we can reuse the known good drive current > > and pre-emphasis level from the last "full" link training. The commit message here isn't entirely accurate. You still need AUX transactions to configure the link according to the values obtained =66rom the last full training sequence. Thierry --bAmEntskrkuBymla Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQIcBAABCAAGBQJWiquaAAoJEN0jrNd/PrOhu0gP/RnK7eO7b8AYgUB/9FDM4ldb ipsUWGDC04SgAj/e9sZlWpGBqz1UxO4i/Yh7KYWzWuLPK6S5c7dp4IGvPPYi9mUZ bmJFgbbVQI54bi2EFDdj3BsI0JQNTa7cpMboLC6xLu33a1klU1UNw+qrBderAtVN hT4ltdvJkOz/rOUftPtu8wP+6YY2SsiRp4AdsHinKs+oRX1s1HHrCl7jXulVW6b1 ARVO4f/tBKdyVvgMF0Csh9jzY1l49GzCkgFtfCno8+Srb+Qa/qxWDxkCaYTpHArR yfxatxLDtZGqAenwGCHyUBsJroDzRofojfpN8NMtAklCJiN1yJRnSStK5yppkwxI pEAiZ4ksKje58YmOr/u23dO4NsRRCEeG93DR/0urVXCb67xv+xA8g85QS0Wfl2Wz k3ErDMnGAbCUmocvY2OY/q2/WdM3+4Ww3gKR4+D/MeT7jgcMToU3GxcLVxxlyeBr Ce8sqBb9yFodnoEajYfONhKELVwAB3nMpqiYNjZVrjO/D0ACvdoGaHT0WHTxO45M T4gDQcXvqxTzrIIC3dyZ6v8iySPbOpT3A1CphFvJwhDTZxjSk8grYK6M4oC3NGqU 73jm0qfvLfZYv7lAdApnUn3zdIkh2St20l5yBp8lYEq91V31L1y3I0nXyFeT7KYv AuSRy4NtKTCRcYZPqhFY =C1sh -----END PGP SIGNATURE----- --bAmEntskrkuBymla-- --===============1968341967== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KSW50ZWwtZ2Z4 IG1haWxpbmcgbGlzdApJbnRlbC1nZnhAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHA6Ly9saXN0 cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9pbnRlbC1nZngK --===============1968341967==--