From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nishanth Menon Subject: Re: I2C TWL4030 Keypad Date: Sat, 17 Feb 2007 07:45:11 -0600 Message-ID: <45D706E7.60301@gmail.com> References: <8bf247760702160325m6624817bpbced2b76db9ae30a@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <8bf247760702160325m6624817bpbced2b76db9ae30a@mail.gmail.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-omap-open-source-bounces@linux.omap.com Errors-To: linux-omap-open-source-bounces@linux.omap.com To: Ram Cc: linux-omap-open-source@linux.omap.com List-Id: linux-omap@vger.kernel.org Ram stated on 2/16/2007 5:25 AM: > I also observe randomly (say 3 out of 10 times), my i2c bus times out and > im unable to read or write TWL4030 registers. i get an return value of > -110. > > i2c_omap i2c_omap.2: timeout waiting for bus ready What is ur I2C speed configured? max u should be using is 2.6Mhz, u could try and bump down to 400khz or so..further, which is the kernel versions - this is not tested with rt patch..so there might be some interesting things happening there.. :D Regards, Nishanth Menon