Hi Felipe,
On 03/11/2015 03:50 AM, Felipe Balbi wrote:
On Mon, Mar 09, 2015 at 11:39:17AM -0500, Felipe Balbi wrote:
On Thu, Feb 19, 2015 at 12:06:49PM -0600, Felipe Balbi wrote:
If either SCL or SDA are stuck low, we need to
recover the bus using the procedure described
on section 3.1.16 of the I2C specification.
Note that we're trying to implement the procedure
exactly as described by that section. First we
check which line is stuck low, then implement
one or the other procedure. If SDA recovery procedure
fails, we reset our IP in an attempt to make it work.
Signed-off-by: Felipe Balbi <balbi@xxxxxx>
---
Tested with AM437x IDK, AM437x SK, BeagleBoneBlack and Beagle X15 with
1000 iterations of i2cdetect on all available buses.
That said, I couldn't get any device to hold the bus busy so I could
see this working. If anybody has any good way of forcing a condition
so that we need bus recovery, I'd be glad to look at.
ping
any comments here ?? Anybody at all ????
I think the I2C bus recovery infrastructure should be used here ;)
As I did there https://lkml.org/lkml/2014/12/1/397, but
there are no comments too :(
regards,
-grygorii
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