31:22

0h

RO

Reserved

21

0h

RW/P

Hardware Autonomous Enable (HAE)

If 1, then hardware may request power gating whenever it has reached an idle condition.

20

0h

RO

Reserved

19

0h

RW/P

Sleep Enable (SLEEP_​EN)

1: The function may assert Sleep during power gating.
0: The function will never asset Sleep to the retention flops.
Note that some platforms may default this bit to 0, others to 1.

18

0h

RW/P

D3-Hot Enable (D3HEN)

If 1, then function will power gate when idle and the PMCSR [1:0] register in the function = b11 (D3).

17

0h

RW/P

Device Idle Enable (DEVIDLEN)

If 1, then the function will power gate when idle and the DevIdle register (DevIdleC [2] = 1) is set.

16

0h

RW/P

PMC Request Enable (PMCRE)

If this bit is set to 1, the function will power gate when idle and pmc_​(ip)_​sw_​pg_​req_​b =0.

15:13

0h

RO

Reserved

12:10

2h

RW/O/P

Power Latency Scale (POW_​LAT_​SCALE)

Power On Latency Scale

9:0

0h

RW/O/P

Power Latency Value (POW_​LAT_​VALUE)

Power On Latency value