From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jaehoon Chung Subject: Re: [PATCH 0/2] mmc: core: pre-patch for next eMMC version Date: Fri, 14 Sep 2012 18:38:03 +0900 Message-ID: <5052FAFB.7040201@samsung.com> References: <5036C96A.7070300@samsung.com> <503C4A01.2030200@samsung.com> <5052D8FD.1010900@samsung.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from mailout2.samsung.com ([203.254.224.25]:32724 "EHLO mailout2.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750934Ab2INJiO (ORCPT ); Fri, 14 Sep 2012 05:38:14 -0400 Received: from epcpsbgm1.samsung.com (epcpsbgm1 [203.254.230.26]) by mailout2.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTP id <0MAC0066G2RNTUM0@mailout2.samsung.com> for linux-mmc@vger.kernel.org; Fri, 14 Sep 2012 18:38:12 +0900 (KST) Received: from [10.90.51.55] by mmp2.samsung.com (Oracle Communications Messaging Server 7u4-24.01(7.0.4.24.0) 64bit (built Nov 17 2011)) with ESMTPA id <0MAC009A02ROI690@mmp2.samsung.com> for linux-mmc@vger.kernel.org; Fri, 14 Sep 2012 18:38:12 +0900 (KST) In-reply-to: Sender: linux-mmc-owner@vger.kernel.org List-Id: linux-mmc@vger.kernel.org To: Ulf Hansson Cc: Jaehoon Chung , Kyungmin Park , linux-mmc , Chris Ball Hi Ulf, I agreed your opinion. Best Regards, Jaehoon Chung On 09/14/2012 06:34 PM, Ulf Hansson wrote: > Hi Jaehoon, > > For "mmc: core: prepare the next version of eMMC card" you may have my ack! > > But not for "mmc: core: add the quirk for broken revision". > The reason is simply that it is not needed right now and we don't know > if it ever will be. So I suggest to skip this for now and we can get > back to this later. > > Kind regards > Ulf Hansson > > > On 14 September 2012 09:13, Jaehoon Chung wrote: >> Hi Ulf and Chris, >> >> Could you have any opinion? >> If you have no more, could you merge the patch for eMMC5.0? >> >> Best Regards, >> Jaehoon Chung >> >> On 08/29/2012 08:59 PM, Kyungmin Park wrote: >>> Hi Ulf, >>> >>> On 8/29/12, Ulf Hansson wrote: >>>> Hi Jaehoon, >>>> >>>> On 28 August 2012 06:33, Jaehoon Chung wrote: >>>>> Hi Ulf, >>>>> >>>>> This patch is to support eMMC5.0.(already discussing on eMMC5.0.) >>>>> Revision value is defined the 0x7 into ext_csd register.(in eMMC5.0's >>>>> case) >>>> >>>> Until the spec is really set we should not add some new code for this, >>>> it does not make sense to kind of guess. >>> It's not guess. it's determined and will be discussed at JEDEC soon. >>> >>> Revision 1.7 (for MMC V5.0) >>> >>> Thank you, >>> Kyungmin Park >>>> >>>>> >>>>> And case of Quirks is preparation patch to prevent the problem that should >>>>> exist. >>>>> That Quirks can also use for backward compatibility. >>>>> (if card is greater version than eMMC4.5 and need to use only eMMC4.5 >>>>> feature? >>>>> then can use quirks and known_rev.) >>>> >>>> It is just speculations about potential problems with eMMC 5.0. I >>>> think we can leave this to later, if/when we see a need for it. >>>> >>>> Kind regards >>>> Ulf Hansson >>>> -- >>>> To unsubscribe from this list: send the line "unsubscribe linux-mmc" in >>>> the body of a message to majordomo@vger.kernel.org >>>> More majordomo info at http://vger.kernel.org/majordomo-info.html >>>> >>> -- >>> To unsubscribe from this list: send the line "unsubscribe linux-mmc" in >>> the body of a message to majordomo@vger.kernel.org >>> More majordomo info at http://vger.kernel.org/majordomo-info.html >>> >> > -- > To unsubscribe from this list: send the line "unsubscribe linux-mmc" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >