Intel® Core™ Ultra Processors for H-series and U-series Platforms SOC I/O Registers
| ID | Date | Version | Classification |
|---|---|---|---|
| 795260 | 12/14/2023 | 001 | Public |
Device Idle Control (DEVIDLE_CONTROL) – Offset 24c
| Bit Range | Default | Access | Field Name and Description |
|---|---|---|---|
| 31:5 | 0h | RO | Reserved |
| 4 | 0h | RO | intr_req_capable (intr_req_capable) Set to 1 by HW if it is capable of generating an interrupt on command completion, else 0 |
| 3 | 1h | RW/1C | restore_required (restore_required) When set (by HW), SW must restore state to the IP. The state may have been lost due to a reset or full power lost. SW clears the bit by writing a 1. This bit |
| 2 | 0h | RW | devidle (devidle) SW sets this bit to 1 to move the function into the DevIdle state. Writing this bit to 0 will return the function to the fully active D0 state (D0i0) |
| 1 | 0h | RO | Reserved |
| 0 | 0h | RO | cmd_in_progress (cmd_in_progress) HW sets this bit on a 1->0 or 0->1 transition of DEVIDLE. While set, the other bits in this register are not valid and it is not allowed for SW to write to any bit in this register. |