From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757224Ab3KMNuj (ORCPT ); Wed, 13 Nov 2013 08:50:39 -0500 Received: from cassiel.sirena.org.uk ([80.68.93.111]:41072 "EHLO cassiel.sirena.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753524Ab3KMNug (ORCPT ); Wed, 13 Nov 2013 08:50:36 -0500 Date: Wed, 13 Nov 2013 13:50:21 +0000 From: Mark Brown To: Krzysztof Kozlowski Cc: Sangbeom Kim , Liam Girdwood , Samuel Ortiz , Lee Jones , linux-kernel@vger.kernel.org, Kyungmin Park Message-ID: <20131113135021.GN878@sirena.org.uk> References: <1383923118-26921-1-git-send-email-k.kozlowski@samsung.com> <1384263715-5713-1-git-send-email-k.kozlowski@samsung.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="hNG1vEeyG8BCaHbQ" Content-Disposition: inline In-Reply-To: <1384263715-5713-1-git-send-email-k.kozlowski@samsung.com> X-Cookie: Long life is in store for you. User-Agent: Mutt/1.5.21 (2010-09-15) X-SA-Exim-Connect-IP: 149.254.183.27 X-SA-Exim-Mail-From: broonie@sirena.org.uk Subject: Re: [PATCH] regulator: s5m8767: Disable OVCB in probe X-SA-Exim-Version: 4.2.1 (built Mon, 26 Dec 2011 16:57:07 +0000) X-SA-Exim-Scanned: Yes (on cassiel.sirena.org.uk) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --hNG1vEeyG8BCaHbQ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Tue, Nov 12, 2013 at 02:41:55PM +0100, Krzysztof Kozlowski wrote: > According to SW Guide the Over-Voltage Clamp may malfunction at VBatt > 5.25V and 110'C temperature. This may result in overshooting or > undershooting LDO's voltage outputs. > Disable the Over-Voltage Clamp in probe by updating proper bit in all > LDO registers. Is there no way to detect these conditions at runtime? The temperature condition in particular seems very high and hence relatively unlikely to hold most of the time, disabling the overvoltage protection all the time seems like an uncertain tradeoff. --hNG1vEeyG8BCaHbQ Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAEBAgAGBQJSg4OaAAoJELSic+t+oim93YIQAJu06Vc9oDokh4f7uvEGl/ff uKS6dg5oi/gHWRes05zrHZGTgvdTFo1hXlN/b35zzSTcoTfr2CCRdrS7o1PhjN7P d+CThYQ0w2Jil2SNCtSea+jkkNqDF2qSeCv+f+ZnEAfH2et1zQxxJCaj/K8uZeWF 8AMHVhqgRd95AaFY+32B0wX7ef3ZiPyK01SdYvBda2G9soH0xBNAM/aXquqmZ/Vj 2FmRGARhsaJQAn2UEtieSZozaIMXRjE/Jhob9QvhXFOM3mpX1d3a3EDP8ACk1vnY lNloqfoVD0ymb8Woso9WtrrFszURZq1jNIIXrzLGcfhgxDMOXLrybIjwSnRbIBoV Kn0P+K+yQiIQnMabJW97/WGm4AeKVdzIFZYN01CzqqsxICKJD72R5tRsg3SYHFzr FbvTxZ3fNfodEd7YOFrUFKzpYRW5KDZheAbfIOfODq5O3sJQWmJRXibBnT2vySmc USzhHibrfk6XpHOUq0rV5iGG3PkKf9kMyK2TgEdfy+oimgsAWeC+A5OODOV221lr v7l0QnNLKcla+tjZvuC1QYQf7TR6dVG/FCVAx+1+yWamcavs0jbmMjK2FOqrksXV 7DrJxba2zupazkdKfO/MM0kqTi0pKmMIoBB4UpwoxecqaOqwQgTb4JLD1nioFEzf XGy+4Z/8v2YTrgBwNCb/ =VOrT -----END PGP SIGNATURE----- --hNG1vEeyG8BCaHbQ--