From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Brownell Subject: Re: [PATCH v3] New-style I2C and SMBus EEPROM driver (with device_ids) Date: Wed, 11 Jun 2008 09:49:16 -0700 Message-ID: <200806110949.16286.david-b@pacbell.net> References: <20080605193103.GA13062@pengutronix.de> <20080611073323.GA4257@pengutronix.de> <20080611110921.5bf770dd@hyperion.delvare> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20080611110921.5bf770dd-ig7AzVSIIG7kN2dkZ6Wm7A@public.gmane.org> Content-Disposition: inline List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: i2c-bounces-GZX6beZjE8VD60Wz+7aTrA@public.gmane.org Errors-To: i2c-bounces-GZX6beZjE8VD60Wz+7aTrA@public.gmane.org To: Jean Delvare Cc: i2c-GZX6beZjE8VD60Wz+7aTrA@public.gmane.org List-Id: linux-i2c@vger.kernel.org On Wednesday 11 June 2008, Jean Delvare wrote: > On Wed, 11 Jun 2008 09:33:25 +0200, Wolfram Sang wrote: > > > > AT24_FLAG_24C00 (doesn't really matter), and AT24C01 needs 128 > > > > addresses?? (please, someone, prove me wrong) > > > > > > Why do you think so? ... > > > > No I2C-address is mentioned in the whole datasheet; all the timing > > diagrams put the memory offset to the place where one would expect the > > I2C-address; the pins usually named A0-A2 are not connected... > > Ooch. I didn't notice the timing diagrams... OMG. You mean, the obsolete 24c01, rather than the 24c01b or newer? > > Maybe it once made the chip one cent cheaper, I dunno, but I wouldn't be > > that surprised :) Doesn't really matter for at24, luckily. > > Indeed. If this chip is the crazy thing you suspect (and I now fear you > are correct), it's not compatible with the other EEPROMs, so we don't > really care about it. Right ... worth a comment in the chip ID table that 24c01b (and newer) entries really mean that, since the original 24c01 parts were broken by design (no on-wire chip address byte). - Dave _______________________________________________ i2c mailing list i2c-GZX6beZjE8VD60Wz+7aTrA@public.gmane.org http://lists.lm-sensors.org/mailman/listinfo/i2c