From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexander Kochetkov Subject: Re: [PATCH] i2c: omap: fix i207 errata handling Date: Fri, 21 Nov 2014 03:29:40 +0300 Message-ID: <089B5BDA-682D-46B6-869F-A6ADDFE691C3@gmail.com> References: <1416529011-21803-1-git-send-email-al.kochet@gmail.com> Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) Content-Type: text/plain; charset=koi8-r Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <1416529011-21803-1-git-send-email-al.kochet@gmail.com> Sender: linux-kernel-owner@vger.kernel.org To: linux-omap@vger.kernel.org, linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, Alexander Kochetkov Cc: Wolfram Sang , Tony Lindgren , Felipe Balbi , Aaro Koskinen List-Id: linux-i2c@vger.kernel.org 21 =CE=CF=D1=C2. 2014 =C7., =D7 3:16, Alexander Kochetkov =CE=C1=D0=C9=D3=C1=CC(=C1): > commit 6d9939f651419a63e091105663821f9c7d3fec37 (i2c: omap: split out= [XR]DR > and [XR]RDY) changed the way how errata i207 (I2C: RDR Flag May Be In= correctly > Set) get handled. It's is seen if open 6d9939f651419a63e09^ and 6d9939f651419a63e09 side = by side: 6d9939f651419a63e09^: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/dr= ivers/i2c/busses/i2c-omap.c?id=3D540a4790f7da0d3ca5ad9d726f198a5eb4db05= ec#n800 6d9939f651419a63e09: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/dr= ivers/i2c/busses/i2c-omap.c?id=3D6d9939f651419a63e091105663821f9c7d3fec= 37#n800 Errata "2C: RDR Flag May Be Incorrectly Set" http://www.ti.com/lit/er/sprz319f/sprz319f.pdf 21 =CE=CF=D1=C2. 2014 =C7., =D7 3:16, Alexander Kochetkov =CE=C1=D0=C9=D3=C1=CC(=C1): > Found by code review. Real impact haven't seen. > Tested on Beagleboard XM C. Does anybody know the "certain rare conditions" when RDR errata appears= ? I tested without luck (Beagleboard XM C).