From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Ball Subject: Re: [RFC] sdhci: add support for sd 3.0 host and hooks for dual data rate eMMC Date: Thu, 30 Sep 2010 06:53:40 +0100 Message-ID: <20100930055340.GA5164@void.printf.net> References: <6E692E1B-FB67-4FB0-9316-9E990CEB89ED@marvell.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from void.printf.net ([89.145.121.20]:49967 "EHLO void.printf.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751759Ab0I3Fxm (ORCPT ); Thu, 30 Sep 2010 01:53:42 -0400 Content-Disposition: inline In-Reply-To: <6E692E1B-FB67-4FB0-9316-9E990CEB89ED@marvell.com> Sender: linux-mmc-owner@vger.kernel.org List-Id: linux-mmc@vger.kernel.org To: Philip Rakity Cc: "linux-mmc@vger.kernel.org" , Zhangfei Gao , Mark Brown Hi Philip, On Wed, Sep 29, 2010 at 10:27:12PM -0700, Philip Rakity wrote: > This code has not been tested on mmc-test but has been patched against. I have run it against 2.6.32 (with some minor changes). > > I wanted to give folks a chance to comment before making it a formal patch. The code add the hooks into the sdhci layer for > version 3.0 of the controller, including mmc/eMMC dual data rate support (ddr). The next RFC adds support for DDR at the mmc layer This doesn't apply against mmc-next, in part because it duplicates code from Zhangfei's SDHC 3.0 patches in mmc-next here: http://git.kernel.org/?p=linux/kernel/git/cjb/mmc.git;a=commit;h=90ce6eed919bf30fa545bbe93265bc6c463cedda http://git.kernel.org/?p=linux/kernel/git/cjb/mmc.git;a=commit;h=07f1a246a56b12fe85897580cc696160f41e3983 http://git.kernel.org/?p=linux/kernel/git/cjb/mmc.git;a=commit;h=0bd7f9f081e9131d4d724f3a3bd19a500c10a5e3 and from Hanumath's DDR 4.4 patch, and Adrian's additions to it, which I haven't merged into -next yet but plan to soon -- I've been waiting for more feedback on them. They already add DDR support at the MMC layer: https://patchwork.kernel.org/patch/177312/ https://patchwork.kernel.org/patch/177332/ If you could study these and rebase your patch on top of all of them, it would help us see what you're changing. Thanks, -- Chris Ball One Laptop Per Child