The PCI controller can have DT subnodes describing extra properties of particular PCI devices, ie. a PHY attached to an EHCI controller on a PCI bus. This patch parses those DT subnodes and assigns a node to the PCI device instance, so that the driver can extract details from that node and ie. configure the PHY using the PHY subsystem.
Signed-off-by: Marek Vasut marek.vasut+renesas@gmail.com Cc: Simon Glass sjg@chromium.org Cc: Tom Rini trini@konsulko.com --- V3: Reword the comment V2: Move the whole machinery to pci_bind_bus_devices(), right after the driver instance platform data are updated. This reduces the number of times the DT is traversed and works for both DT nodes with and without compat string. --- drivers/pci/pci-uclass.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+)
diff --git a/drivers/pci/pci-uclass.c b/drivers/pci/pci-uclass.c index e9671d9b76..ab8818280d 100644 --- a/drivers/pci/pci-uclass.c +++ b/drivers/pci/pci-uclass.c @@ -733,6 +733,7 @@ int pci_bind_bus_devices(struct udevice *bus) ulong vendor, device; ulong header_type; pci_dev_t bdf, end; + ofnode node; bool found_multi; int ret;
@@ -803,6 +804,20 @@ int pci_bind_bus_devices(struct udevice *bus) pplat->vendor = vendor; pplat->device = device; pplat->class = class; + + /* Associate optional OF node */ + dev_for_each_subnode(node, bus) { + phys_addr_t df, size; + df = ofnode_get_addr_size(node, "reg", &size); + if (df == FDT_ADDR_T_NONE) + continue; + + if (PCI_FUNC(df) == PCI_FUNC(bdf) && + PCI_DEV(df) == PCI_DEV(bdf)) { + dev->node = node; + break; + } + } }
return 0;