On Tue, May 28, 2024 at 09:03:23PM +0200, Bartosz Golaszewski wrote: > From: Bartosz Golaszewski <bartosz.golaszewski@xxxxxxxxxx> > > Some PCI devices must be powered-on before they can be detected on the > bus. Introduce a simple framework reusing the existing PCI OF > infrastructure. > > The way this works is: a DT node representing a PCI device connected to > the port can be matched against its power control platform driver. If > the match succeeds, the driver is responsible for powering-up the device > and calling pcie_pwrctl_device_set_ready() which will trigger a PCI bus s/pcie_pwrctl_device_set_ready/pci_pwrctl_device_set_ready/ > rescan as well as subscribe to PCI bus notifications. > > When the device is detected and created, we'll make it consume the same > DT node that the platform device did. When the device is bound, we'll > create a device link between it and the parent power control device.
