ASPM on PCIe supported?

[akirchberger]

Hi,

i have a ASRock N100M Mainboard and a LattePanda Mu, both with Ubuntu installed. On the LattePanda Mu i can't get ASPM for PCIe running?

sudo dmesg | grep ASPM

ASRock N100M:
[ 0.020926] PCIe ASPM is forcibly enabled
[ 0.282164] acpi PNP0A08:00: _OSC: OS supports [ExtendedConfig ASPM ClockPM Segments MSI EDR HPX-Type3]
[ 0.301633] pci 0000:03:00.0: ASPM: overriding L1 acceptable latency from 0x0 to 0x7

LattePanda Mu
[ 0.035200] PCIe ASPM is disabled
[ 0.123456] ACPI FADT declares the system doesn't support PCIe ASPM, so disable it
[ 0.354135] acpi PNP0A08:00: _OSC: not requesting OS control; OS requires [ExtendedConfig ASPM ClockPM MSI]
[ 0.354349] acpi PNP0A08:00: FADT indicates ASPM is unsupported, using BIOS configuration
[ 0.372246] pci 0000:04:00.0: ASPM: overriding L1 acceptable latency from 0x0 to 0x7

This is the Setting in the ASRock N100M BIOS:

Thanks.

[alphaarea]

Thank you very much for your feedback, we will pay attention to the work of energy-saving technologies, including ASPM, in the development of the next version of BIOS

[akirchberger]

Great to hear, it is really important for the PCB I am currently developing.