Re: [PATCH v2 2/3] powerpc/fsl: set fsl, i2c-erratum-a004447 flag for P2041 i2c controllers

[Chris Packham]

On 7/05/21 8:24 pm, Joakim Tjernlund wrote:
> On Fri, 2021-05-07 at 10:04 +0200, Joakim Tjernlund wrote:
>> On Fri, 2021-05-07 at 12:40 +1200, Chris Packham wrote:
>>> The i2c controllers on the P2040/P2041 have an erratum where the
>>> documented scheme for i2c bus recovery will not work (A-004447). A
>>> different mechanism is needed which is documented in the P2040 Chip
>>> Errata Rev Q (latest available at the time of writing).
>>  From what I can tell this Erratum also applies to P1010
Will add for v3.
>>   Jocke
> Reference: https://media.digikey.com/pdf/PCNs/Freescale/P1010CE_RevL.pdf
>
> Also, I think this series should go to stable.
This series builds on changes that have been merged for v5.13. I haven't 
checked if it applies to stable, I think at least commit 65171b2df15e 
("i2c: mpc: Make use of i2c_recover_bus()") would need to come along 
with it.