From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_NEOMUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CC941C43387 for ; Wed, 19 Dec 2018 15:41:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A79D72086C for ; Wed, 19 Dec 2018 15:41:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730329AbeLSPlE (ORCPT ); Wed, 19 Dec 2018 10:41:04 -0500 Received: from mail.bootlin.com ([62.4.15.54]:37265 "EHLO mail.bootlin.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728135AbeLSPlE (ORCPT ); Wed, 19 Dec 2018 10:41:04 -0500 Received: by mail.bootlin.com (Postfix, from userid 110) id 4BE3920AB9; Wed, 19 Dec 2018 16:41:01 +0100 (CET) Received: from localhost (aaubervilliers-681-1-38-38.w90-88.abo.wanadoo.fr [90.88.157.38]) by mail.bootlin.com (Postfix) with ESMTPSA id 975F4206A7; Wed, 19 Dec 2018 16:40:39 +0100 (CET) Date: Wed, 19 Dec 2018 16:40:40 +0100 From: Maxime Ripard To: sakari.ailus@iki.fi Cc: Kishon Vijay Abraham I , Boris Brezillon , Thomas Petazzoni , Laurent Pinchart , linux-media@vger.kernel.org, Archit Taneja , Andrzej Hajda , Chen-Yu Tsai , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, Krzysztof Witos , Rafal Ciepiela Subject: Re: [PATCH v3 03/10] phy: Add MIPI D-PHY configuration options Message-ID: <20181219154040.k424xkzz3xap6462@flea> References: <96a74b72be8db491dea720fdd7394bcd09880c84.1544190837.git-series.maxime.ripard@bootlin.com> <20181213204928.34hwq63nj5ircvkf@valkosipuli.retiisi.org.uk> <20181217154921.c4ttksa6bg2yxxjp@flea> <20181217202039.zhsxozdw7dlc3xdj@valkosipuli.retiisi.org.uk> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="5iqyg7jbpm2uyidw" Content-Disposition: inline In-Reply-To: <20181217202039.zhsxozdw7dlc3xdj@valkosipuli.retiisi.org.uk> User-Agent: NeoMutt/20180716 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --5iqyg7jbpm2uyidw Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Mon, Dec 17, 2018 at 10:20:39PM +0200, sakari.ailus@iki.fi wrote: > Hi Maxime, >=20 > On Mon, Dec 17, 2018 at 04:49:21PM +0100, Maxime Ripard wrote: > > Hi Sakari, > >=20 > > Thanks for your feedback. > >=20 > > On Thu, Dec 13, 2018 at 10:49:28PM +0200, sakari.ailus@iki.fi wrote: > > > > + /** > > > > + * @lanes: > > > > + * > > > > + * Number of active data lanes used for the transmissions. > > >=20 > > > Could you add that these are the first "lanes" number of lanes from w= hat > > > are available? > >=20 > > I'm not quite sure I understood this part though, what did you mean? >=20 > A number of lanes are routed between the two devices on hardware, and this > field is specifying how many of them are in use. In order for the bus to > function, both ends need to be in agreement on which of these lanes are > actually being used. The current practice I've seen without exceptions is > that these are the first n lanes. Ah, right, I get it now, thanks! Maxime --=20 Maxime Ripard, Bootlin Embedded Linux and Kernel engineering https://bootlin.com --5iqyg7jbpm2uyidw Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQRcEzekXsqa64kGDp7j7w1vZxhRxQUCXBpmeAAKCRDj7w1vZxhR xTnFAQCP+5QVwIA2UFCKHNRgxL3GIau3a9c+AWOb3EwOgHtSKQEA9BNznxa/TFI6 EtTZ9A7KaebGQBSMkfkKIaBrEGGaqQQ= =PQh1 -----END PGP SIGNATURE----- --5iqyg7jbpm2uyidw--