On Wed, May 26, 2021 at 11:02:45AM +1000, Michael Ellerman wrote:
> Wolfram Sang writes:
> > On Wed, May 12, 2021 at 09:20:48AM +1200, Chris Packham wrote:
> >> The P2040/P2041 has an erratum where the i2c recovery scheme
> >> documented in the reference manual (and currently implemented
> >> in t
Wolfram Sang writes:
> On Wed, May 12, 2021 at 09:20:48AM +1200, Chris Packham wrote:
>> The P2040/P2041 has an erratum where the i2c recovery scheme
>> documented in the reference manual (and currently implemented
>> in the i2c-mpc.c driver) does not work. The errata document
>> provides an alter
On Wed, May 12, 2021 at 09:20:48AM +1200, Chris Packham wrote:
> The P2040/P2041 has an erratum where the i2c recovery scheme
> documented in the reference manual (and currently implemented
> in the i2c-mpc.c driver) does not work. The errata document
> provides an alternative that does work. This
> For those reading along the v2 mentioned in that thread was posted as
> https://lore.kernel.org/linux-i2c/20170511122033.22471-1-joakim.tjernl...@infinera.com/
>
> there was a bit of discussion but it seemed to die out without reaching
> a conclusion.
>
> The i2c-mpc driver is now using the
On 13/05/21 3:01 am, w...@kernel.org wrote:
>>> I've been doing my recent work with a P2040 and prior to that I did test
>>> out the recovery on a T2081 (which isn't documented to have this
>>> erratum) when I was re-working the driver. The "new" recovery actually
>>> seems better but I don't hav
> > I've been doing my recent work with a P2040 and prior to that I did test
> > out the recovery on a T2081 (which isn't documented to have this
> > erratum) when I was re-working the driver. The "new" recovery actually
> > seems better but I don't have a reliably faulty i2c device so that's
On Wed, 2021-05-12 at 01:48 +, Chris Packham wrote:
> On 12/05/21 10:10 am, Joakim Tjernlund wrote:
> > On Wed, 2021-05-12 at 09:20 +1200, Chris Packham wrote:
> > > The P2040/P2041 has an erratum where the i2c recovery scheme
> > > documented in the reference manual (and currently implemented
On 12/05/21 10:10 am, Joakim Tjernlund wrote:
> On Wed, 2021-05-12 at 09:20 +1200, Chris Packham wrote:
>> The P2040/P2041 has an erratum where the i2c recovery scheme
>> documented in the reference manual (and currently implemented
>> in the i2c-mpc.c driver) does not work. The errata document
>>
On Wed, 2021-05-12 at 09:20 +1200, Chris Packham wrote:
> The P2040/P2041 has an erratum where the i2c recovery scheme
> documented in the reference manual (and currently implemented
> in the i2c-mpc.c driver) does not work. The errata document
> provides an alternative that does work. This series
The P2040/P2041 has an erratum where the i2c recovery scheme
documented in the reference manual (and currently implemented
in the i2c-mpc.c driver) does not work. The errata document
provides an alternative that does work. This series implements
that alternative and uses a property in the devicetre
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