From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756244AbcILSgl (ORCPT ); Mon, 12 Sep 2016 14:36:41 -0400 Received: from mezzanine.sirena.org.uk ([106.187.55.193]:60566 "EHLO mezzanine.sirena.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752585AbcILSgi (ORCPT ); Mon, 12 Sep 2016 14:36:38 -0400 Date: Mon, 12 Sep 2016 19:36:24 +0100 From: Mark Brown To: Matthias Kaehlcke Cc: lgirdwood@gmail.com, Douglas Anderson , briannorris@chromium.org, javier@dowhile0.org, robh+dt@kernel.org, mark.rutland@arm.com, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org Message-ID: <20160912183624.GG27946@sirena.org.uk> References: <20160906190504.GA79728@google.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="KiOS11rrlPLUJaFM" Content-Disposition: inline In-Reply-To: <20160906190504.GA79728@google.com> X-Cookie: Question authority. User-Agent: Mutt/1.6.0 (2016-04-01) X-SA-Exim-Connect-IP: 2a01:348:6:8808:fab::3 X-SA-Exim-Mail-From: broonie@sirena.org.uk Subject: Re: [PATCH v4 3/4] regulator: Add support for a fixed delay after voltage increases X-SA-Exim-Version: 4.2.1 (built Mon, 26 Dec 2011 16:24:06 +0000) X-SA-Exim-Scanned: No (on mezzanine.sirena.org.uk); Unknown failure Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --KiOS11rrlPLUJaFM Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Tue, Sep 06, 2016 at 12:05:04PM -0700, Matthias Kaehlcke wrote: > the stabilisation time. This change introduces the device tree property > "regulator-settle-time-up-us" which allows to specify a fixed delay > We don't add an option of a fixed delay on the way down for now because > the way down is probably modelled best with a ramp rate, not a fixed > delay. Are you sure? It seems more likely to be highly load dependent if there's an appreciable variation. That could be a ramp rate if you've got a very predictable load and a simple regulator but it seems like the system is less likely to care if we collapsed down in that case. --KiOS11rrlPLUJaFM Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQEcBAEBCAAGBQJX1vWnAAoJECTWi3JdVIfQnp8H/itKHcEOl7lqsMdVdwptrViH nSEynzpCISUutSwKWtSVY+UW4bF9PCTc2ilyzAe2vbIn+/v7Hq606AS9HW6aBR33 brD52CMmSeWse2gkU52ltygdfDP+cO+OIwylMMaJlPpCk3SKUdIWPCIppI0b0afI oty0DmtoW1PFcIUGMwgM45vO7AsR6eqFAT3DSyBXCNV/m9dImrCR/U8fmJVA4iZk KX4vcN+sA4OVgMwgzG8G82B1Y1lHl+BMTB7b8h9910vrQth8PE3/7R8lcg3B1ora AXmouIMhxYPVX4TZt4axpIRRPT6JyKoIYTY6usOr+PmKlTInRy/TeQdlGD/iIu8= =vtF9 -----END PGP SIGNATURE----- --KiOS11rrlPLUJaFM--