PCI: amd-mdb: Assert PERST# on shutdown

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Add a shutdown handler for the AMD MDB PCIe host controller that
asserts the PERST# signal via GPIO before the system powers off or
reboots. This ensures the connected PCIe endpoint is held in reset
during shutdown.

Signed-off-by: Sai Krishna Musham <sai.krishna.musham@amd.com>
[mani: removed conditional check since GPIO APIs return safely if desc is NULL]
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Link: https://patch.msgid.link/20260427121227.290604-1-sai.krishna.musham@amd.com

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Sai Krishna Musham 2026-04-27 17:42:27 +05:30 • committed by Manivannan Sadhasivam

parent 254f49634e

commit 0492461a05

1 changed files with 8 additions and 0 deletions

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drivers/pci/controller/dwc/pcie-amd-mdb.c

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