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About SATA_CAP Register in i.MX6DQ.

Question asked by Keita Nagashima on Aug 5, 2015
Latest reply on Aug 24, 2015 by Keita Nagashima

Dear All,

 

Hello. I have a question about SATA_CAP Register in i.MX6DQ.

Refer to bit:28 SMPS & bit:27 SSS of "53.7.1 HBA Capabilites Register (SATA_CAP)" in IMX6DQRM(Rev.3).

 

There are below descriptions.

- bit:28 SMPS

"This bit is set by the system firmware/BIOS when the platform supports mechanical presence switch for

hot plug operation."

- bit:27 SSS

"This bit is set by the system firmware/BIOS to indicate platform support for staggered devices' spin-up."

 

These two bits seems to be possible to write by software.

But, this bits are read only.

 

Is it possible to write to these bits by software?

 

Best Regards,

Keita

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