PCI: mvebu: Fix support for PCI_BRIDGE_CTL_BUS_RESET on emulated bridge

Browse source

Hardware supports PCIe Hot Reset via PCIE_CTRL_OFF register. Use it for
implementing PCI_BRIDGE_CTL_BUS_RESET bit of PCI_BRIDGE_CONTROL register on
emulated bridge.

With this change the function pci_reset_secondary_bus() starts working and
can reset connected PCIe card.

Link: https://lore.kernel.org/r/20211125124605.25915-13-pali@kernel.org
Fixes: 1f08673eef ("PCI: mvebu: Convert to PCI emulated bridge config space")
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>

...

This commit is contained in:

Pali Rohár 2021-11-25 13:46:02 +01:00 • committed by Lorenzo Pieralisi

parent 91a8d79fc7

commit d75404cc08

1 changed files with 28 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

28

drivers/pci/controller/pci-mvebu.c

View file