On 12/16/2015 11:04 AM, Mika Westerberg wrote:
On Tue, Dec 15, 2015 at 11:20:03AM -0800, Loc Ho wrote:
Can we not just add an AML method that will return the operation clock
frequency that the I2C driver can use? If the method doesn't existed,
we will just bail and do nothing or assume what ever default behavior?

Why would you add yet another method? There already are existing ACPI
*CNT methods that you can use, and are used in systems out there.

One thing to remember that *CNT methods allow more precise machine and per bus specific tunings against different HW characteristics like pull-up resistance, line load, propagation delay, etc.

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