enable the emc2305 fan controller and NCP power controller 30ms timeo…

[jerseyang]

…ut mechanism

Why I did it

fix the dx010 system eeprom unavailable issue

How I did it

enable the i2c slave 30ms timeout mechanism

How to verify it

1. i2cstress test in DX010 iSMT controller bus

Which release branch to backport (provide reason below if selected)

A picture of a cute animal (not mandatory but encouraged)

[ghost]

All CLA requirements met.

[lguohan]

can you have a description of the exact problem in the comments?

[jerseyang]

Hi Guohan,

   this PR fix the syseeprom are not available in SLX in the new branches(202012/master),  when issue happens, the kernel message output like this:

[81101.215711] ismt_smbus 0000:00:13.0: completion wait timed out
[81102.239737] ismt_smbus 0000:00:13.0: completion wait timed out
[81102.246302] pca953x 17-0020: failed reading register
[81103.263749] ismt_smbus 0000:00:13.0: completion wait timed out
[81104.291677] ismt_smbus 0000:00:13.0: completion wait timed out
[81105.311692] ismt_smbus 0000:00:13.0: completion wait timed out
[81106.335728] ismt_smbus 0000:00:13.0: completion wait timed out
[81106.342298] pca953x 17-0020: failed reading register
[81107.359716] ismt_smbus 0000:00:13.0: completion wait timed out
[81108.383696] ismt_smbus 0000:00:13.0: completion wait timed out
[81109.407752] ismt_smbus 0000:00:13.0: completion wait timed out
[81110.431712] ismt_smbus 0000:00:13.0: completion wait timed out
[81110.438271] pca953x 17-0020: failed reading register
[81111.455733] ismt_smbus 0000:00:13.0: completion wait timed out
[81112.479714] ismt_smbus 0000:00:13.0: completion wait timed out
[81113.503725] ismt_smbus 0000:00:13.0: completion wait timed out
[81114.527711] ismt_smbus 0000:00:13.0: completion wait timed out
[81114.534273] pca953x 17-0020: failed reading register
[81115.551666] ismt_smbus 0000:00:13.0: completion wait timed out
[81116.575710] ismt_smbus 0000:00:13.0: completion wait timed out

[jerseyang]

Hi Guohan, Add the comments in the PR, please help to check. Thanks!

…

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On Fri, Jul 16, 2021 at 1:44 AM lguohan ***@***.***> wrote: can you have a description of the exact problem in the comments? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#8138 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/ALSTQPSTKT5AFR45N6TLX43TX4M7BANCNFSM5ACIRYPA> .

[Blueve]

Is this issue only happens on SLX?

[jerseyang]

Yeah, I have only found this issue in SLX so far.

[sujinmkang]

/azp run

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