Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932288AbaGILUc (ORCPT ); Wed, 9 Jul 2014 07:20:32 -0400 Received: from hqemgate14.nvidia.com ([216.228.121.143]:1386 "EHLO hqemgate14.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932237AbaGILU1 (ORCPT ); Wed, 9 Jul 2014 07:20:27 -0400 X-PGP-Universal: processed; by hqnvupgp08.nvidia.com on Wed, 09 Jul 2014 04:13:26 -0700 Date: Wed, 9 Jul 2014 14:20:23 +0300 From: Peter De Schrijver To: Lucas Stach CC: Thierry Reding , "linux-ide@vger.kernel.org" , Stephen Warren , "linux-kernel@vger.kernel.org" , "Mikko Perttunen" , "linux-tegra@vger.kernel.org" , "tj@kernel.org" , "linux-arm-kernel@lists.infradead.org" Subject: Re: [PATCH 6/9] ARM: tegra: Export tegra_powergate_power_on Message-ID: <20140709112023.GH23218@tbergstrom-lnx.Nvidia.com> References: <53A1B252.1030204@wwwdotorg.org> <20140619080234.GK3407@tbergstrom-lnx.Nvidia.com> <53A3096B.1040409@wwwdotorg.org> <20140623101441.GU3407@tbergstrom-lnx.Nvidia.com> <20140708130501.GC9516@ulmo> <20140708141135.GC23218@tbergstrom-lnx.Nvidia.com> <20140709063130.GA3170@ulmo> <20140709083311.GE23218@tbergstrom-lnx.Nvidia.com> <20140709102551.GA19357@ulmo> <1404901907.5766.3.camel@weser.hi.pengutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: <1404901907.5766.3.camel@weser.hi.pengutronix.de> X-NVConfidentiality: public 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 On Wed, Jul 09, 2014 at 12:31:47PM +0200, Lucas Stach wrote: > > > You could also take the easy way out and enable all power domains by > default. So drivers won't be able to disable the power domain on old > DTBs where they aren't hooked up, but the will continue to function > without calling into the old Tegra specific power domain code. > If the bootloader turned some domains off, the kernel would have to turn them back on again. However that requires knowledge about the clocks and resets of the peripherals in the domain. Cheers, Peter. -- 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/