On Wed, Aug 9, 2023 at 3:19 AM Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx> wrote: > > Hi, > > This series enables ASPM by default on the host bridge and devices of selected > Qcom platforms. > > The motivation behind enabling ASPM in the controller driver is provided in the > commit message of patch 2/2. > > This series has been tested on SC8280-CRD and Lenovo Thinkpad X13s laptop > and it helped save ~0.6W of power during runtime. > > - Mani > > Manivannan Sadhasivam (2): > PCI: dwc: Add host_post_init() callback > PCI: qcom: Enable ASPM for platforms supporting 1.9.0 ops > > .../pci/controller/dwc/pcie-designware-host.c | 3 ++ > drivers/pci/controller/dwc/pcie-designware.h | 1 + > drivers/pci/controller/dwc/pcie-qcom.c | 28 +++++++++++++++++++ > 3 files changed, 32 insertions(+) > > -- > 2.25.1 > While not extremely scientific, and I don't have any way to measure the power usage on my Thinkpad X13s, with these patches applied, I've only gone down 29% battery power in the past 6 hours, suspend and resume cycles don't see any issues either. Tested-by: Steev Klimaszewski <steev@xxxxxxxx>
