From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jean Delvare Subject: Re: pxa i2c unit busy caused unrecoverable phone hang problem Date: Mon, 27 Apr 2009 12:08:10 +0200 Message-ID: <20090427120810.20af38b8@hyperion.delvare> References: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: Sender: linux-i2c-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: =?UTF-8?B?5LyK5rO9?= Cc: Linux I2C List-Id: linux-i2c@vger.kernel.org On Mon, 27 Apr 2009 15:57:45 +0800, =E4=BC=8A=E6=B3=BD wrote: > We use Marvell's pxaXXX chip,and the i2c unit often become BUSY statu= s .As > normal operation,the Unit-Busy will become free quickly,but sometimes > UNIT-BUSY forever.For there are very frequent i2c operations,the cell= -phone > become hang soon,nothing could be done but remove the battery and reb= oot. >=20 > So could you give a suggestion? Is there any useful way to protect f= rom > entering this abnormal UNIT-BUSY i2c status or recover from that? I don't know anything about PXA platforms, there's nothing I can do for you, sorry. --=20 Jean Delvare