From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755639AbbHNRoG (ORCPT ); Fri, 14 Aug 2015 13:44:06 -0400 Received: from pandora.arm.linux.org.uk ([78.32.30.218]:59834 "EHLO pandora.arm.linux.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932696AbbHNRnm (ORCPT ); Fri, 14 Aug 2015 13:43:42 -0400 Date: Fri, 14 Aug 2015 18:43:30 +0100 From: Russell King - ARM Linux To: Bartlomiej Zolnierkiewicz Cc: linux-arm-kernel@lists.infradead.org, linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org, Arnd Bergmann , Olof Johansson Subject: Re: [PATCH] arm: footbridge_defconfig: disable IDE subsystem Message-ID: <20150814174330.GY7557@n2100.arm.linux.org.uk> References: <1439571876-13758-1-git-send-email-b.zolnierkie@samsung.com> <1439571876-13758-8-git-send-email-b.zolnierkie@samsung.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1439571876-13758-8-git-send-email-b.zolnierkie@samsung.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 Fri, Aug 14, 2015 at 07:04:23PM +0200, Bartlomiej Zolnierkiewicz wrote: > This patch disables deprecated IDE subsystem in footbridge_defconfig > (no IDE host drivers are selected in this config so there is no valid > reason to enable IDE subsystem itself). That's actually incorrect. I use IDE on Footbridge because it works loads with my CY82C693 board. I never submitted the patches which make CY82C693 work on ARM though... However, the CY82C693 must not be allowed to use DMA (which is why the ATA driver can't be used) - if it does, it locks the PCI bus. It's a hardware incompatibility between some PCI devices and the Footbridge. -- FTTC broadband for 0.8mile line: currently at 10.5Mbps down 400kbps up according to speedtest.net.