Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755285Ab2KOHSs (ORCPT ); Thu, 15 Nov 2012 02:18:48 -0500 Received: from opensource.wolfsonmicro.com ([80.75.67.52]:55441 "EHLO opensource.wolfsonmicro.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752536Ab2KOHSr (ORCPT ); Thu, 15 Nov 2012 02:18:47 -0500 Date: Thu, 15 Nov 2012 16:18:39 +0900 From: Mark Brown To: Guennadi Liakhovetski Cc: linux-kernel@vger.kernel.org, Liam Girdwood Subject: Re: [Q] regulators: 3-current-regulated supply Message-ID: <20121115071838.GI7599@opensource.wolfsonmicro.com> References: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="I/5syFLg1Ed7r+1G" Content-Disposition: inline In-Reply-To: X-Cookie: Cold hands, no gloves. User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2185 Lines: 52 --I/5syFLg1Ed7r+1G Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Nov 15, 2012 at 08:15:15AM +0100, Guennadi Liakhovetski wrote: > parts are pretty simple - DCDC step-down, LDO. The first step-up DCDC=20 > isn't a problem either. It's the second step-up supply, that I'm having a= =20 > problem with. It's output voltage can be regulated by using either a=20 > voltage feedback or the three current feedbacks. In the current feedback= =20 > mode one has a choice between a manual mode, in which case you just choos= e=20 > one of the feedbacks and everything is simple again, or in automatic mode= =2E=20 This almost certainly has no other function than to drive a LED string for a backlight; it's not sensible to represent it via the regulator framework at all. Just implement it as a backlight and/or LED driver and have done with it unless you can find some other use for it. --I/5syFLg1Ed7r+1G Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAEBAgAGBQJQpJc7AAoJELSic+t+oim9BuYP/RCJeMx+3x63o3ppFVtg20Zl 3UYOYAmCEl4eT0DfX6GH1flzn9QtQsX4R8LEPco8hsWBtumXX39Vi3leKGCNjesZ zbqhKpQfmuqeh5iSEzl3DUXBEwsbDfP8gcZ/QGmcrpxeex+JzPnTkT6YsbeSffcc yin+gZZfOkzQaj6+F1T2gwpXVAyaW2bURkrtyvbDaYzDwwFOijYj1xBvY4sJLxXS 0E0BolT4kCz9hu3YzkcgFUPFdrhtvIXcBf4PWChsZ/JbxoCwipeFsHd76Hqmb41s 2pcCHevTyEaANqtGW/PI9svCZg4RnkXRoQ6y39oHU4R2nFYEfL6cYR1rgke1cVnX U4KWwpNjcCC9z/fr6GYyQkA4TZ3AJqSPzC43GnWVXfVqaKXhi5sXouo3i5mGVNmM 60PcBrBYlt1w6xOoJ1g7YnAHABF8EyHvmsf5RHdX/AYheDl3/7QqLrQuzubjZ1EV nqe08QBmKIt/e6Evto1vZlbgfGvOzTwWs7SZexu1YhCATDdfIxV0xB/WdOeRCRP/ Nr7lv2uUjFN4W3xEqdStzKX+I4VXsFsSogoC5WGJcSzS1lSm8N9eMIoZavJig/yH NA+VvDuzpTArPxJlADZUfp2PzSf7uKlQOrOL0XESvfS/MmLktFRT29bPdacI5s58 +NweqJRxCFsew1UGal6W =Pl7t -----END PGP SIGNATURE----- --I/5syFLg1Ed7r+1G-- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/