6.5-stable review patch. If anyone has any objections, please let me know.
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From: Lizhi Hou lizhi.hou@amd.com
[ Upstream commit ae9813db1dc5ac987a09889791155a7b8c527f8d ]
The Xilinx Alveo U50 PCI card exposes multiple hardware peripherals on its PCI BAR. The card firmware provides a flattened device tree to describe the hardware peripherals on its BARs. This allows U50 driver to load the flattened device tree and generate the device tree node for hardware peripherals underneath.
To generate device tree node for U50 card, add PCI quirks to call of_pci_make_dev_node() for U50.
Acked-by: Bjorn Helgaas bhelgaas@google.com Signed-off-by: Lizhi Hou lizhi.hou@amd.com Link: https://lore.kernel.org/r/1692120000-46900-4-git-send-email-lizhi.hou@amd.co... Signed-off-by: Rob Herring robh@kernel.org Stable-dep-of: c9260693aa0c ("PCI: Lengthen reset delay for VideoPropulsion Torrent QN16e card") Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/pci/quirks.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 9fa3c9225bb30..3ec7bcfbf4dc0 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -6161,3 +6161,14 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a2d, dpc_log_size); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a2f, dpc_log_size); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a31, dpc_log_size); #endif + +/* + * For a PCI device with multiple downstream devices, its driver may use + * a flattened device tree to describe the downstream devices. + * To overlay the flattened device tree, the PCI device and all its ancestor + * devices need to have device tree nodes on system base device tree. Thus, + * before driver probing, it might need to add a device tree node as the final + * fixup. + */ +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_XILINX, 0x5020, of_pci_make_dev_node); +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_XILINX, 0x5021, of_pci_make_dev_node);