From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751382Ab1GRVM4 (ORCPT ); Mon, 18 Jul 2011 17:12:56 -0400 Received: from adelie.canonical.com ([91.189.90.139]:50751 "EHLO adelie.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751281Ab1GRVMz (ORCPT ); Mon, 18 Jul 2011 17:12:55 -0400 Date: Mon, 18 Jul 2011 16:12:48 -0500 (CDT) From: Manoj Iyer X-X-Sender: manjo@lazy To: Chris Ball cc: Manoj Iyer , Arnd Bergmann , linux-kernel@vger.kernel.org, jbarnes@virtuousgeek.org, matsumur@nts.ricoh.co.jp, linux-pci@vger.kernel.org, linux-mmc@vger.kernel.org Subject: Re: [PATCH] mmc: Added quirks for Ricoh 1180:e823 lower base clock frequency In-Reply-To: Message-ID: References: <1310419715-13254-1-git-send-email-manoj.iyer@canonical.com> <201107131835.25217.arnd@arndb.de> User-Agent: Alpine 2.02 (DEB 1266 2009-07-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > I see, thanks. So we're lacking any data on what speed the card would > normally provide. Perhaps you could try that card on a different > controller, just so we're able to see whether it's usually possible > to get closer to 45M/sec with it? Sure, let me generate some data on based on Ricoh R5C822. > > I think I'll take your patch as-is for 3.1 -- since if there is a > performance degradation, it's on cards that simply don't work at all > right now -- and if you're able to work on a followup patch that only > performs the clock-lowering after the first error, I think that'd be a > handy patch to have around. Does that sound good? > That sounds good to me, that way we limit degradation in performance only to previously non-working cards. I will send the V2 soon. > Thanks! > > - Chris. > -- > Chris Ball > One Laptop Per Child > > Thanks a ton. -- ==================== Manoj Iyer Ubuntu/Canonical Hardware Enablement ====================