RE: [PATCH v2] I2C: designware: fix IO timeout issue for AMD controller

2015-12-13 Thread Yu, Xiangliang
.org; linux- > ker...@vger.kernel.org; SPG_Linux_Kernel > Subject: Re: [PATCH v2] I2C: designware: fix IO timeout issue for AMD > controller > > On Fri, Dec 11, 2015 at 08:02:53PM +0800, Xiangliang Yu wrote: > > Because of some hardware limitation, AMD I2C controller can't trigger &

Re: [PATCH v2] I2C: designware: fix IO timeout issue for AMD controller

2015-12-12 Thread Wolfram Sang
On Fri, Dec 11, 2015 at 08:02:53PM +0800, Xiangliang Yu wrote: > Because of some hardware limitation, AMD I2C controller can't > trigger pending interrupt if interrupt status has been changed > after clearing interrupt status bits. Then, I2C will lost > interrupt and IO timeout. > > According to h

Re: [PATCH v2] I2C: designware: fix IO timeout issue for AMD controller

2015-12-11 Thread Jarkko Nikula
On 12/11/2015 02:02 PM, Xiangliang Yu wrote: Because of some hardware limitation, AMD I2C controller can't trigger pending interrupt if interrupt status has been changed after clearing interrupt status bits. Then, I2C will lost interrupt and IO timeout. According to hardware design, this patch i