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?