From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757816Ab2FQSxJ (ORCPT ); Sun, 17 Jun 2012 14:53:09 -0400 Received: from opensource.wolfsonmicro.com ([80.75.67.52]:52222 "EHLO opensource.wolfsonmicro.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757586Ab2FQSxI (ORCPT ); Sun, 17 Jun 2012 14:53:08 -0400 Date: Sun, 17 Jun 2012 19:53:05 +0100 From: Mark Brown To: Sangbeom Kim Cc: "'Liam Girdwood'" , linux-kernel@vger.kernel.org, sameo@linux.intel.com, sbkim01@gmail.com Subject: Re: [PATCH 5/5] regulator: Support AP watchdog reset operation for s5m8767a Message-ID: <20120617185305.GD4267@opensource.wolfsonmicro.com> References: <042301cd493e$8d95d7e0$a8c187a0$@com> <20120613174620.GD7804@opensource.wolfsonmicro.com> <04ad01cd49c0$df565d20$9e031760$@com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="9dgjiU4MmWPVapMU" Content-Disposition: inline In-Reply-To: <04ad01cd49c0$df565d20$9e031760$@com> X-Cookie: You are always busy. 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 --9dgjiU4MmWPVapMU Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Thu, Jun 14, 2012 at 09:01:39AM +0900, Sangbeom Kim wrote: > Solution > - Basic concept: After ap watchdog reset, GPIO configuration is changed by default value > - S5M8767A has function of voltage control with gpio (8 levels with 3 gpios) > - Set bootable voltage on level 0 -> can work with default gpio configuration > - In the probing, Change voltage control level from level 0 to level 1 > - Execute normal dvfs operation on level 1 > - After watchdog reset, ap gpio is set by default value > - PMIC operation mode is changed by ap reset (level1 -> level0) > - AP can execute normal boot OK, so basically what you're doing is fixing one of the GPIO selected voltage levels so that when the AP comes out of reset it'll drive the PMIC into a suitable level for it to boot? That makes sense - can you please resend with this in the changelog. --9dgjiU4MmWPVapMU Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQIcBAEBAgAGBQJP3ibTAAoJEBus8iNuMP3d99wP/022Yl0qRSdxouqj2LEBHOhC 4TzgVm6OPGQn3qW1r6GqPOZ4q6UTJeVgj6+PS6oMkyWvnrJFnk3Izqkfo+OVtNBm OoTU16VBoieIj301Nvj3N68ILy7TX6L71j6kbumBJe3oXIZUsgdiNWpUXcQ2kWuy hHiU+KA9lfkCNn7bGzNLtS+YXaNOP3ROWhTXOAb45L+SulO6lXn/V1U+qNbY00nJ /Yl8DMLsZQQU1FwnvKDFXcSrBykheoF9qu2K/xuA5iems4UBaFrSvKBER/tXbI20 d5R9F9pY1vuEyfwSukjjeYm39zzeoubigBoNgwGLAAkF0U1mzXXxXKOjDgPIcDRx 1Z+2jhaV2lCQ7qB2J88xbUvXv4pabR3EPoHm9nj8sZXmYw16qCYc33vNj+NklOYe iir2qbo3JNgr8TFGvPqQlF5v6W3o7xs0hch9NkMrGOd6t8GRnLGRvEpWRZI0Kn+q i4m1009rrv0UtPAX1n2+kr2x/UYgRMVD6SKagas740A+uVoh3P9RbJDdmMFSvvPG 7o3KvtLsdn+SlnhAm+jHGGjyhh0QfF2/q01o9W2mTJe6q/tSTSclg/G8ghfpkQUf fynzb1rUre7FcGs5ONoPkA/DGLveuoP/0Jk9HAE7GRjBIbYOxK5+eMsyxsNlWwET O8g8eBkjG3oEmKrwzJoY =YKFJ -----END PGP SIGNATURE----- --9dgjiU4MmWPVapMU--