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