From mboxrd@z Thu Jan 1 00:00:00 1970 From: Maxime Ripard Subject: Re: [PATCH v2 0/9] phy: Add configuration interface for MIPI D-PHY devices Date: Fri, 7 Dec 2018 10:09:35 +0100 Message-ID: <20181207090935.xw5oonoe7od7hmkq@flea> References: Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============0048141687==" Return-path: Received: from mail.bootlin.com (mail.bootlin.com [62.4.15.54]) by gabe.freedesktop.org (Postfix) with ESMTP id C49906E6F4 for ; Fri, 7 Dec 2018 09:09:36 +0000 (UTC) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Kishon Vijay Abraham I Cc: Krzysztof Witos , Rafal Ciepiela , Boris Brezillon , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Chen-Yu Tsai , Laurent Pinchart , Thomas Petazzoni , linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org List-Id: dri-devel@lists.freedesktop.org --===============0048141687== Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="troqpcfqchs4wkuw" Content-Disposition: inline --troqpcfqchs4wkuw Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Fri, Dec 07, 2018 at 10:30:55AM +0530, Kishon Vijay Abraham I wrote: > Maxime, >=20 > On 06/11/18 8:24 PM, Maxime Ripard wrote: > > Hi, > >=20 > > Here is a set of patches to allow the phy framework consumers to test a= nd > > apply runtime configurations. > >=20 > > This is needed to support more phy classes that require tuning based on > > parameters depending on the current use case of the device, in addition= to > > the power state management already provided by the current functions. > >=20 > > A first test bed for that API are the MIPI D-PHY devices. There's a num= ber > > of solutions that have been used so far to support these phy, most of t= he > > time being an ad-hoc driver in the consumer. > >=20 > > That approach has a big shortcoming though, which is that this is quite > > difficult to deal with consumers integrated with multiple variants of p= hy, > > of multiple consumers integrated with the same phy. > >=20 > > The latter case can be found in the Cadence DSI bridge, and the CSI > > transceiver and receivers. All of them are integrated with the same phy= , or > > can be integrated with different phy, depending on the implementation. > >=20 > > I've looked at all the MIPI DSI drivers I could find, and gathered all = the > > parameters I could find. The interface should be complete, and most of = the > > drivers can be converted in the future. The current set converts two of > > them: the above mentionned Cadence DSI driver so that the v4l2 drivers = can > > use them, and the Allwinner MIPI-DSI driver. >=20 > Are you planning to send one more revision of this series after fixing the > comments? I'll send a new version today. Thanks! Maxime --=20 Maxime Ripard, Bootlin Embedded Linux and Kernel engineering https://bootlin.com --troqpcfqchs4wkuw Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iHUEABYIAB0WIQRcEzekXsqa64kGDp7j7w1vZxhRxQUCXAo4zwAKCRDj7w1vZxhR xbdOAQCILMy+JAxd6RYgHspolG6rz2rl0icJwBXZiKs8fE/kMwD/ch79eAPk78lF sYujEN+9EIEfzYtOZi8/7VZdxA9JKwU= =vt2O -----END PGP SIGNATURE----- --troqpcfqchs4wkuw-- --===============0048141687== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KZHJpLWRldmVs IG1haWxpbmcgbGlzdApkcmktZGV2ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlz dHMuZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vZHJpLWRldmVsCg== --===============0048141687==--