From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751994AbdJXKwj (ORCPT ); Tue, 24 Oct 2017 06:52:39 -0400 Received: from pandora.armlinux.org.uk ([78.32.30.218]:58054 "EHLO pandora.armlinux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751825AbdJXKwi (ORCPT ); Tue, 24 Oct 2017 06:52:38 -0400 Date: Tue, 24 Oct 2017 11:52:27 +0100 From: Russell King - ARM Linux To: Dietmar Eggemann Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Vincent Guittot , Juri Lelli Subject: Re: [PATCH v3 0/2] arm: remove cpu_efficiency Message-ID: <20171024105227.GD20805@n2100.armlinux.org.uk> References: <20171024102718.16113-1-dietmar.eggemann@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20171024102718.16113-1-dietmar.eggemann@arm.com> User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Oct 24, 2017 at 11:27:16AM +0100, Dietmar Eggemann wrote: > With the dt related patches for exynos and renesas now in the > appropriated for-next branches for v4.15 there are no Cortex-A15/A7 arm > big.LITTLE systems left relying on the 'cpu_efficiency/clock-frequency > dt property' based solution anymore. This is way too early to remove support for something that has been in place since 2012. As you've just shown, people are using it with DT files today. We don't know how long people will persist using older files, and we don't know whether there are DT files out in the wild that we don't know about. Our general rule is that we maintain compatibility for older DT. NAK. -- RMK's Patch system: http://www.armlinux.org.uk/developer/patches/ FTTC broadband for 0.8mile line in suburbia: sync at 8.8Mbps down 630kbps up According to speedtest.net: 8.21Mbps down 510kbps up