> -Original Message-
> From: Westerberg, Mika
> Sent: Thursday, April 10, 2014 2:08 AM
> To: Du, Wenkai
> Cc: One Thousand Gnomes; linux-...@vger.kernel.org; Wolfram Sang; linux-
> ker...@vger.kernel.org
> Subject: Re: [PATCH] i2c-designware: Mask interrupts during i2c
Hi all,
Updated problem descriptions from Mika's feedback and new test data:
There have been "i2c_designware 80860F41:00: controller timed out" errors
on a number of Baytrail platforms. The issue is caused by incorrect value in
Interrupt Mask Register (DW_IC_INTR_MASK) when i2c core is being en
> -Original Message-
> From: Westerberg, Mika
> Sent: Tuesday, April 08, 2014 3:30 AM
> To: Du, Wenkai
> Cc: One Thousand Gnomes; linux-...@vger.kernel.org; Wolfram Sang; linux-
> ker...@vger.kernel.org
> Subject: Re: [PATCH] i2c-designware: Mask interrupts during i2c
> -Original Message-
> From: Westerberg, Mika
> Sent: Monday, April 07, 2014 8:11 AM
> To: One Thousand Gnomes
> Cc: Du, Wenkai; linux-...@vger.kernel.org; Wolfram Sang;
> linux-kernel@vger.kernel.org
> Subject: Re: [PATCH] i2c-designware: Mask interrupts during i2c
>Interrupt masking is done already after each transaction.
At end of transfer, the code uses __i2c_dw_enable(dev, false) to disable
adapter. This function doesn't mask interrupts. There is another function
i2c_dw_disable that masks and clears interrupts. This could be used, but that
means we ne
, Mika
Sent: Friday, April 04, 2014 11:16 AM
To: Du, Wenkai
Cc: linux-...@vger.kernel.org; Wolfram Sang; linux-kernel@vger.kernel.org
Subject: Re: [PATCH] i2c-designware: Mask interrupts during i2c controller
enable
On Fri, Apr 04, 2014 at 08:05:23PM +0300, Du, Wenkai wrote:
> diff --git a/drivers
Hi all,
There were "i2c_designware 80860F41:00: controller timed out" errors
on a number of Baytrail platforms. They typically occurred during suspend
resume where some short i2c transfers were exchanged with devices. And they
mostly occurred when using fast mode, not standard mode.
The cause of
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