SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
Address Offset | 0x0000 0000 | ||
Physical Address | 0x4AE0 7200 | Instance | GPU_PRM |
Description | This register controls the GPU power state to reach upon a domain sleep transition | ||
Type | RW |
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
RESERVED | GPU_MEM_ONSTATE | RESERVED | LOWPOWERSTATECHANGE | RESERVED | POWERSTATE |
Bits | Field Name | Description | Type | Reset |
---|---|---|---|---|
31:18 | RESERVED | R | 0x0 | |
17:16 | GPU_MEM_ONSTATE | GPU_MEM memory bank state when domain is ON. | R | 0x3 |
0x3: Memory bank is on when the domain is ON. | ||||
15:5 | RESERVED | R | 0x0 | |
4 | LOWPOWERSTATECHANGE | Power state change request when domain has already performed a sleep transition. Allows going into deeper low power state without waking up the power domain. | RW | 0x0 |
0x0: Do not request a low power state change. | ||||
0x1: Request a low power state change. This bit is automatically cleared when the power state is effectively changed or when power state is ON. | ||||
3:2 | RESERVED | R | 0x0 | |
1:0 | POWERSTATE | Power state control | RW | 0x0 |
0x0: OFF state | ||||
0x1: Reserved | ||||
0x2: Reserved | ||||
0x3: ON State |
Power Management Functional Description |
PRCM Register Manual |
Address Offset | 0x0000 0004 | ||
Physical Address | 0x4AE0 7204 | Instance | GPU_PRM |
Description | This register provides a status on the current GPU power domain state. [warm reset insensitive] | ||
Type | RW |
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
RESERVED | LASTPOWERSTATEENTERED | RESERVED | INTRANSITION | RESERVED | GPU_MEM_STATEST | RESERVED | LOGICSTATEST | POWERSTATEST |
Bits | Field Name | Description | Type | Reset |
---|---|---|---|---|
31:26 | RESERVED | R | 0x0 | |
25:24 | LASTPOWERSTATEENTERED | Last low power state entered. Set to 0x3 upon write of the same only. This register is intended for debug purpose only. | RW | 0x0 |
0x0: Power domain was previously OFF | ||||
0x1: Reserved | ||||
0x2: Reserved | ||||
0x3: Power domain was previously ON-ACTIVE | ||||
23:21 | RESERVED | R | 0x0 | |
20 | INTRANSITION | Domain transition status | R | 0x0 |
0x0: No on-going transition on power domain | ||||
0x1: Power domain transition is in progress. | ||||
19:6 | RESERVED | R | 0x0 | |
5:4 | GPU_MEM_STATEST | GPU_MEM memory bank state status | R | 0x3 |
0x0: Memory is OFF | ||||
0x1: Reserved | ||||
0x2: Reserved | ||||
0x3: Memory is ON | ||||
3 | RESERVED | R | 0x0 | |
2 | LOGICSTATEST | Logic state status | R | 0x0 |
0x0: Reserved | ||||
0x1: Logic in domain is ON | ||||
1:0 | POWERSTATEST | Current power state status | R | 0x0 |
0x0: Power domain is OFF | ||||
0x1: Reserved | ||||
0x2: Reserved | ||||
0x3: Power domain is ON-ACTIVE |
Power Management Functional Description |
PRCM Register Manual |
Address Offset | 0x0000 0024 | ||
Physical Address | 0x4AE0 7224 | Instance | GPU_PRM |
Description | This register contains dedicated GPU context statuses. [warm reset insensitive] | ||
Type | RW |
31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
RESERVED | LOSTMEM_GPU_MEM | RESERVED | LOSTCONTEXT_DFF |
Bits | Field Name | Description | Type | Reset |
---|---|---|---|---|
31:9 | RESERVED | R | 0x0 | |
8 | LOSTMEM_GPU_MEM | Specify if memory-based context in GPU_MEM memory bank has been lost due to a previous power transition or other reset source. | RW | 0x1 |
0x0: Context has been maintained | ||||
0x1: Context has been lost | ||||
7:1 | RESERVED | R | 0x0 | |
0 | LOSTCONTEXT_DFF | Specify if DFF-based context has been lost due to a previous power transition or other reset source. (set upon assertion of GPU_RST signal) | RW | 0x1 |
0x0: Context has been maintained | ||||
0x1: Context has been lost |
Power Management Functional Description |
PRCM Register Manual |