Hi,

> stretching. But if the slave device stretch the SCL line for too long
> time, our design still cannot make tSU,STA/tHD,STA/tSU,STO meet spec.

Isn't the new algorithm broken if it cannot support clock stretching?
What was the problem of the old algorithm not meeting the spec?

> However in the old (default) timing algorithm before the commit
> be5ce0e97cc7 ("i2c: mediatek: Add i2c ac-timing adjust support"),
> tSU,STA/tHD,STA/tSU,STO can meet spec. So we want to define a new
> setting "default-adjust-timing" for using the old (default) timing
> algorithm."

What I still do not get: the old algorithm was able to handle clock
stretching. Why can't you update the new one to handle clock stretching
as well. I might be missing something, but what is it?

Happy hacking,

   Wolfram