From mboxrd@z Thu Jan  1 00:00:00 1970
From: Shawn Lin <shawn.lin@rock-chips.com>
Subject: Re: [PATCH 1/3] mmc: core: activate pre-erased multiple write support
 for sd card
Date: Thu, 26 Oct 2017 09:19:25 +0800
Message-ID: <699af9d0-c69b-e02b-54c1-7b0dd3f5369c@rock-chips.com>
References: <1506483638-115756-1-git-send-email-shawn.lin@rock-chips.com>
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To: Ulf Hansson <ulf.hansson@linaro.org>
Cc: shawn.lin@rock-chips.com, Adrian Hunter <adrian.hunter@intel.com>, Jaehoon Chung <jh80.chung@samsung.com>, Wolfram Sang <wsa+renesas@sang-engineering.com>, "Steven J. Hill" <Steven.Hill@cavium.com>, Jan Glauber <jglauber@cavium.com>, linux-mmc@vger.kernel.org

Hi, Ulf

On 2017/9/27 11:40, Shawn Lin wrote:
> Per SD specification version 4.10, section 4.3.4, it says "pre-erased
> (ACMD23) will make a following Multiple Block Write operation faster
> compared to the same operation without preceding ACMD23". ACMD23 is
> mandatory for all sd cards and the spec also says "Command STOP_TRAN
> (CMD12) shall be used to stop the transmission in Write Multiple Block
> whether or not the preerase (ACMD23) feature is used."

Ping... :)