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[v3,0/6] PCI: dwc: Do not enumerate bus before endpoint devices are ready

Message ID 20250613124839.2197945-8-cassel@kernel.org
Headers show
Series PCI: dwc: Do not enumerate bus before endpoint devices are ready | expand

Message

Niklas Cassel June 13, 2025, 12:48 p.m. UTC 
Hello all,

The DWC PCIe controller driver currently does not follow the PCIe
specification with regards to the delays after link training, before
sending out configuration requests. This series fixes this.

At the same time, PATCH 1/4 addresses a regression where a Plextor
NVMe drive fails to be configured correctly. With this series, the
Plextor NVMe drive works once again.


Kind regards,
Niklas


Changes since v2:
-Rename PCIE_RESET_CONFIG_DEVICE_WAIT_MS to PCIE_RESET_CONFIG_WAIT_MS.


Niklas Cassel (6):
  PCI: Rename PCIE_RESET_CONFIG_DEVICE_WAIT_MS to
    PCIE_RESET_CONFIG_WAIT_MS
  PCI: rockchip-host: Use macro PCIE_RESET_CONFIG_WAIT_MS
  PCI: dw-rockchip: Wait PCIE_RESET_CONFIG_WAIT_MS after link-up IRQ
  PCI: qcom: Wait PCIE_RESET_CONFIG_WAIT_MS after link-up IRQ
  PCI: dwc: Ensure that dw_pcie_wait_for_link() waits 100 ms after link
    up
  PCI: dwc: Reduce LINK_WAIT_SLEEP_MS

 drivers/pci/controller/dwc/pcie-designware.c  | 13 ++++++++++++-
 drivers/pci/controller/dwc/pcie-designware.h  | 13 +++++++++----
 drivers/pci/controller/dwc/pcie-dw-rockchip.c |  1 +
 drivers/pci/controller/dwc/pcie-qcom.c        |  1 +
 drivers/pci/controller/pcie-rockchip-host.c   |  2 +-
 drivers/pci/controller/plda/pcie-starfive.c   |  2 +-
 drivers/pci/pci.h                             |  9 +--------
 7 files changed, 26 insertions(+), 15 deletions(-)