> > > > The driver disables TX interrupt when it is not needed anymore or
> > > > when TX gets aborted but the above will re-enable all interrupts
> > regardless.
> > > > Is that the intention?
> > > No, i2c controller can trigger next interrupt only after re-enable all
> > > interrupt.
> >
> >
er.kernel.org; Xue, Ken; Wan, Vincent;
> Huang, Ray; Wang, Annie; Li, Tony
> Subject: Re: [PATCH 1/1] I2C: designware: fix IO timeout issue for AMD
> controller
>
> On 06.11.2015 06:34, Yu, Xiangliang wrote:
> >> -Original Message-
> >> From: Mika Westerberg [
On 06.11.2015 06:34, Yu, Xiangliang wrote:
-Original Message-
From: Mika Westerberg [mailto:mika.westerb...@linux.intel.com]
--- a/drivers/i2c/busses/i2c-designware-core.c
+++ b/drivers/i2c/busses/i2c-designware-core.c
@@ -783,6 +783,9 @@ irqreturn_t i2c_dw_isr(int this_irq, void *dev_id
.org; linux-
> ker...@vger.kernel.org; Xue, Ken; Wan, Vincent; Huang, Ray; Wang, Annie;
> Li, Tony
> Subject: Re: [PATCH 1/1] I2C: designware: fix IO timeout issue for AMD
> controller
>
> On Fri, Nov 06, 2015 at 04:34:19AM +, Yu, Xiangliang wrote:
> > > -Orig
..@linux.intel.com; jarkko.nik...@linux.intel.com;
> > w...@the-dreams.de; linux-...@vger.kernel.org; linux-
> > ker...@vger.kernel.org; Xue, Ken; Wan, Vincent; Huang, Ray; Wang, Annie;
> > Li, Tony
> > Subject: Re: [PATCH 1/1] I2C: designware: fix IO timeout issue for AMD
> >
.org; linux-
> ker...@vger.kernel.org; Xue, Ken; Wan, Vincent; Huang, Ray; Wang, Annie;
> Li, Tony
> Subject: Re: [PATCH 1/1] I2C: designware: fix IO timeout issue for AMD
> controller
>
> On Thu, Nov 05, 2015 at 08:34:44PM +0800, Xiangliang Yu wrote:
> > Because of some har
On Thu, Nov 05, 2015 at 08:34:44PM +0800, Xiangliang Yu wrote:
> Because of some hardware limitation, AMD I2C controller can't
> trigger next interrupt if interrupt status has been changed
> after clearing interrupt status bits. Then, I2C will lost
> interrupt and IO timeout.
>
> According to hard
Because of some hardware limitation, AMD I2C controller can't
trigger next 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 implements a workaround
to disable i2c controller i
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