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

Niklas Cassel cassel at kernel.org
Mon Jun 23 03:12:44 PDT 2025


On Fri, Jun 13, 2025 at 02:48:39PM +0200, Niklas Cassel wrote:
> 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(-)
> 
> -- 
> 2.49.0
> 

Gentle ping



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