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Processor Configuration Registers
302
Datasheet, Volume 2
2.19.8
RP_STATE_CAP—RP State Capability Register
This register contains the maximum base frequency capability for the Integrated 
Graphics Engine (GT).
2.19.9
PCU_MMIO_FREQ_CLIPPING_CAUSE_STATUS Register 
This register provides the status of the frequency clipping cause in MMIO for both 
Power plane 0 (IA) and Power plane 1 (GT) 
B/D/F/Type:
0/0/0/MCHBAR PCU
Address Offset:
5998–599Bh
Reset Value:
00000000h
Access:
RO-FW
Size:
32 bits
BIOS Optimal Default
00h
Bit
Access
Reset 
Value
RST/
PWR
Description
31:24
RO
0h
Reserved (RSVD) 
23:16
RO-FW
00h
Uncore
RPN Capability (RPN_CAP) 
This field indicates the maximum RPN base frequency capability 
for the Integrated Graphics Engine (GT). Values are in units of 
100 MHz.
15:8
RO-FW
00h
Uncore
RP1 Capability (RP1_CAP): 
This field indicates the maximum RP1 base frequency capability 
for the Integrated Graphics Engine (GT). Values are in units of 
100 MHz.
7:0
RO-FW
00h
Uncore
RP0 Capability (RP0_CAP): 
This field indicates the maximum RP0 base frequency capability 
for the Integrated Graphics Engine (GT). Values are in units of 
100 MHz.
B/D/F/Type:
0/0/0/MCHBAR PCU
Address Offset:
5C20–5C23h
Reset Value:
00000000h
Access:
RW
Size:
32 bits
Bit
Access
Reset 
Value
RST/
PWR
Description
31
RW
00000000h
Uncore
pp1_clipped
Set if the PP1 (GT) frequency requested was clipped.
30
RW
00000000h
Reserved (RSVD)
29
RW
00000000h
Uncore
pp1_clipped_non_turbo
Set if the PP1 (GT) frequency requested was clipped, but current 
frequency is lower than RP1 (MAX_NON_TURBO).
28:25
RW
00000000h
Reserved (RSVD)
24
RW
00000000h
Uncore
pp1_clipped_edp
Set if the PP1 (GT) frequency requested was clipped by EDP limit 
(Vmax, Iccmax, Reliability, and so on).
23
RW
00000000h
Reserved (RSVD)
22
RW
00000000h
Uncore
pp1_clipped_hot_vr 
Set if the PP1 (GT) frequency requested was clipped by HOT 
indication from VR on SVID.
21
RW
00000000h
Uncore
p1_clipped_pl2 
Set if the PP1 (GT) frequency requested was clipped by PL2 
(POWER_LIMIT_2) power limiting algorithm.