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+rene...@gmail.com>
Cc: Simon Glass <s...@chromium.org>
Cc: Tom Rini <tr...@konsulko.com>
---
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..cf3e38a6f2 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 potention 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;
--
2.16.2
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