Hi,
I have a question about PCIe port runtime power management.
00:1c.0 PCI bridge: Intel Corporation Device 1e10 (rev c0)
Capabilities: [a0] Power Management version 2
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
PME(D0+,D1-,D2-,D3hot+,D3cold+)
As above output, this PCIe port supports D3hot/D3cold.
But currently, PCIe port driver seems does not support runtime PM.
As below, there is no runtime PM callbacks implemented.
static const struct dev_pm_ops pcie_portdrv_pm_ops = {
.suspend = pcie_port_device_suspend,
.resume = pcie_port_device_resume,
.freeze = pcie_port_device_suspend,
.thaw = pcie_port_device_resume,
.poweroff = pcie_port_device_suspend,
.restore = pcie_port_device_resume,
.resume_noirq = pcie_port_resume_noirq,
};
Is there some known reason why PCIe port runtime PM was not supported?
Or is it just that we have not implemented it yet?
Regards,
Lin Ming
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