Updated switch/glue patch?

[Stefan Bethke]

Am 27.12.2011 um 00:12 schrieb Stefan Bethke:

> 
> Am 26.12.2011 um 23:17 schrieb Adrian Chadd:
> 
>> On 26 December 2011 14:13, Stefan Bethke <stb at lassitu.de> wrote:
>>> Am 26.12.2011 um 21:49 schrieb Adrian Chadd:
>>> 
>>>> I think I was a bit too quick. It turns out that after a few minutes
>>>> of uptime, I get the same behaviour from your iicbb changes.
>>> 
>>> Give me a few moments.  I think I've painted myself into a corner with git, so I'm cloning your repo and re-applying my changes against that. Shouldn't take more than an hour, I hope.
>> 
>> I messed up something w/ my git tree earlier today. Sorry :(
> 
> I see that your TP-WN1043ND.hints has 1 usec delay.  Technically that would be too fast; the datasheet says minimum time for SCLK being high and low respectively is 4 microseconds.  With the current code, that would be hint.iicbb.0.udelay=2.
> 
> I'm building now to test.

With hint.iicbb.0.udelay=2 it's working fine, with the delay down to 1 the switch chip stops being selected as a slave.


Stefan

-- 
Stefan Bethke <stb at lassitu.de>   Fon +49 151 14070811