AnsweredAssumed Answered

About SATA power state transition in i.MX6DQ.

Question asked by Keita Nagashima on Aug 5, 2015
Latest reply on Aug 27, 2015 by Artur Petukhov

Dear All,



The Power mode of SATA can not be changed from the "Slumber" to "Active" condition.



Device : i.MX 6Dual

Board : Custom



Write SATA_P0CMD[ICC]=1h to change into the "Active" condition.

After that, the value becomes 6h when reading SATA_0PSSTS[IPM] (not 1h).



Refer to " Power Management Operations" in IMX6DQRM Rev 2, 06/2014.

When writing SATA_P0CMD[ICC] = 1 h, how does it request to change the "Active" state from i.MX6D to external SSD?

(Does it send a command from the host controller?)


Best Regards,