From mboxrd@z Thu Jan 1 00:00:00 1970 From: Seungwon Jeon Subject: RE: [PATCH] mmc: dw_mmc: Support predefined multiple block transfers. Date: Tue, 27 Sep 2011 11:12:43 +0900 Message-ID: <001f01cc7cba$f1238560$d36a9020$%jun@samsung.com> References: <001901cc7c42$00147c10$003d7430$%jun@samsung.com> <992253991.685205.1317054932934.JavaMail.root@zimbra-prod-mbox-2.vmware.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8BIT Return-path: Received: from mailout1.samsung.com ([203.254.224.24]:57007 "EHLO mailout1.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751625Ab1I0CM6 convert rfc822-to-8bit (ORCPT ); Mon, 26 Sep 2011 22:12:58 -0400 In-reply-to: <992253991.685205.1317054932934.JavaMail.root@zimbra-prod-mbox-2.vmware.com> Content-language: ko Sender: linux-mmc-owner@vger.kernel.org List-Id: linux-mmc@vger.kernel.org To: 'Andrei Warkentin' Cc: 'Chris Ball' , linux-samsung-soc@vger.kernel.org, 'kgene kim' , 'dh han' , linux-mmc@vger.kernel.org Andrei Warkentin wrote: > Hi Seungwon, > > ----- Original Message ----- > > From: "Seungwon Jeon" > > To: linux-mmc@vger.kernel.org > > Cc: "Chris Ball" , linux-samsung-soc@vger.kernel.org, > "kgene kim" , "dh han" > > , "Seungwon Jeon" > > Sent: Monday, September 26, 2011 7:46:59 AM > > Subject: [PATCH] mmc: dw_mmc: Support predefined multiple block > transfers. > > > > This patch adds the support for predefined multiple block read/write. > > > > Signed-off-by: Seungwon Jeon > > Without knowing much about dw_mmc host, your logic otherwise looks ok, > given what > I've previously done for SDHCI as far as CMD23/Auto-CMD23 enhancement. > Just curious, what eMMC cards did you test this on, and what improvement > did you see? Thank you for review. As you done, predefined transfer is required for reliable writes and eMMC4.5 feature. Sadly, I didn't gain an improvement in my case. (I don't know whether I can clarify the tested eMMC card, just one sample.) Best regards, Seungwon Jeon. > > Acked-by: Andrei Warkentin > > Thanks, > A > -- > 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