From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754656Ab0GLM2i (ORCPT ); Mon, 12 Jul 2010 08:28:38 -0400 Received: from opensource.wolfsonmicro.com ([80.75.67.52]:60613 "EHLO opensource2.wolfsonmicro.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752626Ab0GLM2h (ORCPT ); Mon, 12 Jul 2010 08:28:37 -0400 Date: Mon, 12 Jul 2010 13:28:35 +0100 From: Mark Brown To: Sekhar Nori Cc: linux-kernel@vger.kernel.org, davinci-linux-open-source@linux.davincidsp.com, Anuj Aggarwal , Liam Girdwood Subject: Re: [PATCH v2 1/2] regulator: tps6507x: allow driver to use DEFDCDC{2,3}_HIGH register Message-ID: <20100712122835.GB22701@rakim.wolfsonmicro.main> References: <1278937448-32404-1-git-send-email-nsekhar@ti.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1278937448-32404-1-git-send-email-nsekhar@ti.com> X-Cookie: Yow! Are we laid back yet? User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Jul 12, 2010 at 05:54:06PM +0530, Sekhar Nori wrote: > From: Anuj Aggarwal > > In TPS6507x, depending on the status of DEFDCDC{2,3} pin either > DEFDCDC{2,3}_LOW or DEFDCDC{2,3}_HIGH register needs to be read or > programmed to change the output voltage. > > The current driver assumes DEFDCDC{2,3} pins are always tied low > and thus operates only on DEFDCDC{2,3}_LOW register. This need > not always be the case (as is found on OMAP-L138 EVM). > > Unfortunately, software cannot read the status of DEFDCDC{2,3} pins. > So, this information is passed through platform data depending on > how the board is wired. > > Signed-off-by: Anuj Aggarwal > Signed-off-by: Sekhar Nori Acked-by: Mark Brown