linux-kernel - Re: [PATCH] mmc: core: Extend sysfs with OCR register

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Date:	Mon, 4 Jul 2016 16:34:29 +0200
From:	bojan prtvar <prtvar.b@...il.com>
To:	Wolfram Sang <wsa@...-dreams.de>
Cc:	linux-mmc@...r.kernel.org, Jonathan Corbet <corbet@....net>,
	Ulf Hansson <ulf.hansson@...aro.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	Dong Aisheng <aisheng.dong@....com>,
	Wolfram Sang <wsa+renesas@...g-engineering.com>,
	Gwendal Grignou <gwendal@...omium.org>,
	Chaotian Jing <chaotian.jing@...iatek.com>,
	linux-doc@...r.kernel.org, open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mmc: core: Extend sysfs with OCR register

Hi,

On Mon, Jul 4, 2016 at 4:13 PM, Wolfram Sang <wsa@...-dreams.de> wrote:

>> Make operation conditions register (OCR) easily accessible from user space.
>>
> You described "what" above. Can you add the "why", too?
>

According to JEDEC v5.0 chapter 7 the OCR, CID and CSD registers carry
the Device/content specific information.
Registers CID and CSD are already exported through sysfs so let's make
this interface complete by adding missing OCR register.

Do I need to send v2 with updated change log?

Regards,
Bojan