From mboxrd@z Thu Jan 1 00:00:00 1970 From: Philip Langdale Subject: Re: New MMC maintainer needed Date: Mon, 27 Jul 2009 17:52:59 -0700 Message-ID: <20090727175259.12014aa2@fido2.homeip.net> References: <20090714153601.6dfe70ff@mjolnir.ossman.eu> <20090722151744.fffd7bf5.akpm@linux-foundation.org> <4A67A9E8.5080002@mnementh.co.uk> <20090723055447.GA12211@console-pimps.org> <20090722232259.d0ff3495.akpm@linux-foundation.org> <20090724152944.51402e87.akpm@linux-foundation.org> <20090726230630.7598fbe4@fido2.homeip.net> <4A6D990B.9000005@csr.com> <20090727214001.GK12665@console-pimps.org> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20090727214001.GK12665@console-pimps.org> Sender: linux-embedded-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii" To: Matt Fleming Cc: David Vrabel , Andrew Morton , ohad@bencohen.org, ian@mnementh.co.uk, pierre@ossman.eu, linux-kernel@vger.kernel.org, linux-embedded@vger.kernel.org, nico@cam.org, nicolas.ferre@rfo.atmel.com, hskinnemoen@atmel.com, tony@atomide.com, david-b@pacbell.net, manuel.lauss@gmail.com, mirq-l@jasper.es On Mon, 27 Jul 2009 22:40:01 +0100 Matt Fleming wrote: > On Mon, Jul 27, 2009 at 01:09:47PM +0100, David Vrabel wrote: > > Philip Langdale wrote: > > > > > > Both the (Simplified) SD and SDIO specifications do not formally > > > define the 'low voltage' range in the way the MMC spec does. ie: > > > You won't find anything in the SD specs that even tell you what > > > the range is - it just says that it exists. > > > > Standard SD/SDIO cards only support 2.7-3.6V. > > > > 1.8V operation is added in SD physical spec 3.00 and is part of any > > of the UHS-1 modes (SDR12-SDR104 and DDR50). It has a different > > timings and requires a different (3.00 compliant) host controller. > > Is the 3.00 spec publicly available? > Indeed! If the 1.8V operations have conformance requirements beyond those of MMCplus/MMCmobile, then we can't just remove the current test as proposed. I've been checking the sdcard.org site periodically for new specs and haven't seen anything yet. --phil