linux-kernel - Re: [RESEND PATCH v2 0/9] eeprom: at24: at24cs series serial number read

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Message-ID: <20151211120831.GA2742@katana>
Date:	Fri, 11 Dec 2015 13:08:32 +0100
From:	Wolfram Sang <wsa@...-dreams.de>
To:	Bartosz Golaszewski <bgolaszewski@...libre.com>
Cc:	linux-i2c <linux-i2c@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [RESEND PATCH v2 0/9] eeprom: at24: at24cs series serial number
 read

On Wed, Dec 02, 2015 at 11:25:17AM +0100, Bartosz Golaszewski wrote:
> Chips from the at24cs EEPROM series have an additional read-only memory area
> containing a factory pre-programmed serial number. In order to access it, a
> dummy write must be executed before reading the serial number bytes.

Can't you instantiate a read-only EEPROM on this second address? Or a
seperate driver attaching to this address? What is the advantage of
having this in at24?


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