Hello,
by default amdgu only use pci gen2, i want switch to gen 3, but i dont know how.
amdgpu 2.4.82-1, linux-4.13-r4, mesa 17.3-dev and motherboard 2 slot pcie x16 gen3
lspci -vv:
LnkCap: Port #0, Speed 8GT/s, Width x16, ASPM L0s L1, Exit Latency L0s <64ns, L1 <1us
ClockPM- Surprise- LLActRep- BwNot- ASPMOptComp+
LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 5GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
DevCap2: Completion Timeout: Not Supported, TimeoutDis-, LTR-, OBFF Not Supported
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled
LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-
cat /sys/kernel/debug/dri/0/amdgpu_pm_info
power level 2 sclk: 116500 mclk: 120000 vddc: 1225 vddci: 975 pcie gen: 2
modinfo amdgpu:
amdgpu.pcie_gen2= (i set 0, nothing change)
amdgpu.pcie_gen_cap= (i dont know what set)
amdgpu.pcie_lane_cap= (i dont know what set)
if you know how.
by default amdgu only use pci gen2, i want switch to gen 3, but i dont know how.
amdgpu 2.4.82-1, linux-4.13-r4, mesa 17.3-dev and motherboard 2 slot pcie x16 gen3
lspci -vv:
LnkCap: Port #0, Speed 8GT/s, Width x16, ASPM L0s L1, Exit Latency L0s <64ns, L1 <1us
ClockPM- Surprise- LLActRep- BwNot- ASPMOptComp+
LnkCtl: ASPM Disabled; RCB 64 bytes Disabled- CommClk+
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 5GT/s, Width x16, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
DevCap2: Completion Timeout: Not Supported, TimeoutDis-, LTR-, OBFF Not Supported
DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-, LTR-, OBFF Disabled
LnkCtl2: Target Link Speed: 5GT/s, EnterCompliance- SpeedDis-
cat /sys/kernel/debug/dri/0/amdgpu_pm_info
power level 2 sclk: 116500 mclk: 120000 vddc: 1225 vddci: 975 pcie gen: 2
modinfo amdgpu:
amdgpu.pcie_gen2= (i set 0, nothing change)
amdgpu.pcie_gen_cap= (i dont know what set)
amdgpu.pcie_lane_cap= (i dont know what set)
if you know how.
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