[Potential Spoof] Re: [PATCH 1/2] i2c: aspeed: allow to customize base clock divisor

Tao Ren taoren at fb.com
Sat Jun 22 08:21:23 AEST 2019

On 6/20/19 1:13 AM, Tao Ren wrote:
> On 6/20/19 1:01 AM, Ryan Chen wrote:
>> Hello Tao,
>> 	Let me more clear. When you set (3, 15, 14) the device sometimes response nack. 
>> 	but when you set (4, 7, 7), the device always ack. Am I right? 
>> Ryan
> Hello Ryan,
> It's correct. We have seen the problem on 2 Facebook BMC platforms so far. Given the other ~10 Facebook BMC platforms are still running kernel 4.1 (with (4, 7, 7) settings), I'd assume more platforms will be impacted after upgrading to the latest kernel.
> Thank you for spending time on this!

Just heads up Ryan and I are working with ODM vendors to collect scope output; will update back when we have new findings. Thank you all for spending time on this.



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