On Tue, Nov 27, 2012 at 11:19:09AM +0530, Viresh Kumar wrote:
> On 27 November 2012 01:50, Uwe Kleine-König
> wrote:
> > In reply to a more detailed problem report that should be addressed by
> > this series on spear-devel I asked a few questions to rule out 6/ and
> > 7/. I cannot find it in an p
On 27 November 2012 01:50, Uwe Kleine-König
wrote:
> In reply to a more detailed problem report that should be addressed by
> this series on spear-devel I asked a few questions to rule out 6/ and
> 7/. I cannot find it in an public accessible archive though. It's about
> a sta529 codec. When switc
Uwe Kleine-König wrote:
Hello Viresh,
On Mon, Nov 26, 2012 at 06:21:25PM +0530, Viresh Kumar wrote:
On 26 November 2012 17:15, Paul Carpenter
wrote:
Unless you know why the bus is stuck, how can you reset reminder this
method ONLY works if SCL is high and SDA probably was low and the slave
de
Hello Viresh,
On Mon, Nov 26, 2012 at 06:21:25PM +0530, Viresh Kumar wrote:
> On 26 November 2012 17:15, Paul Carpenter
> wrote:
> > Unless you know why the bus is stuck, how can you reset reminder this
> > method ONLY works if SCL is high and SDA probably was low and the slave
> > device is what
On 26 November 2012 18:58, Paul Carpenter
wrote:
>>> +ret = gpio_request_one(bri->scl_gpio, GPIOF_OPEN_DRAIN |
>>> +GPIOF_OUT_INIT_HIGH, "i2c-scl");
>>
>>I always get wary of people driving I2C with non-open-drain, especially
>>with stuck busses
>
> I would want to know what "GPIOF
Viresh Kumar wrote:
On 26 November 2012 17:15, Paul Carpenter
wrote:
Unless you know why the bus is stuck, how can you reset reminder this
method ONLY works if SCL is high and SDA probably was low and the slave
Hi Paul,
I completely agree with what you said, and i also feel the need of
On 26 November 2012 17:15, Paul Carpenter
wrote:
> Unless you know why the bus is stuck, how can you reset reminder this
> method ONLY works if SCL is high and SDA probably was low and the slave
> device is what is stuck in wrong state. NOTE SCL and SDA high can be
> considered as BUS IDLE or havi
Viresh Kumar wrote:
On 25 November 2012 17:22, Paul Carpenter
wrote:
Viresh Kumar wrote:
Add i2c bus recovery infrastructure to i2c adapters as specified in the
i2c
protocol Rev. 03 section 3.1.16 titled "Bus clear".
http://www.nxp.com/documents/user_manual/UM10204.pdf
You should also take n
On 25 November 2012 17:22, Paul Carpenter
wrote:
> Viresh Kumar wrote:
>> Add i2c bus recovery infrastructure to i2c adapters as specified in the
>> i2c
>> protocol Rev. 03 section 3.1.16 titled "Bus clear".
>>
>> http://www.nxp.com/documents/user_manual/UM10204.pdf
>
> You should also take note o
Viresh Kumar wrote:
> Add i2c bus recovery infrastructure to i2c adapters as specified in
the i2c
> protocol Rev. 03 section 3.1.16 titled "Bus clear".
>
> http://www.nxp.com/documents/user_manual/UM10204.pdf
You should also take note of section 3.1.14 and its notes on Software
Reset -
"Pre
Add i2c bus recovery infrastructure to i2c adapters as specified in the i2c
protocol Rev. 03 section 3.1.16 titled "Bus clear".
http://www.nxp.com/documents/user_manual/UM10204.pdf
Sometimes during operation i2c bus hangs and we need to give dummy clocks to
slave device to start the transfer agai
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