This series[1] was originally posted by Vidya Sagar, and I have rebased
it onto 6.19.0-rc6-next. I addressed review comments and split this into
two series, one for fixes(current) and the other is for enhancements.
I verified these patches on Jetson AGX Orin(Tegra234 SoC).

I added below four new patches to fix bugs, commit message of each
patch has the details on the bug and fix.
 - PCI: tegra194: Use HW version number
 - PCI: tegra194: Fix CBB timeout caused by DBI access before core power-on
 - PCI: tegra194: Disable PERST IRQ only in Endpoint mode

I added fixes tag for below patch and moved this to this series from enhancements series
 - PCI: tegra194: Disable L1.2 capability of Tegra234 EP

Rest of the patches are same as the original V3 series, rebased them on
6.19.0-rc6-next and addressed minor review comments.

I reordered the patches with regard to fixes tag.

Verification details.
 - I verified both Root Port and Endpoint mode controllers on Tegra234 SoC.
 - Basic sanity Link up, configuration space access and BAR access are verified.
 - I verified that ASPM L1.2 capability is disabled for Endpoint mode.
 - I verified suspend to RAM tests with Endpoint mode.

[1] https://patchwork.kernel.org/project/linux-pci/patch/20221013183854.21087-1-vidyas@nvidia.com/

Manikanta Maddireddy (6):
  PCI: tegra194: Increase LTSSM poll time on surprise down
  PCI: tegra194: Disable LTSSM after transition to detect on surprise
    down
  PCI: tegra194: Disable PERST IRQ only in Endpoint mode
  PCI: tegra194: Use DWC IP core version
  PCI: dwc: Apply ECRC workaround to DesignWare 5.00a as well
  PCI: tegra194: Fix CBB timeout caused by DBI access before core
    power-on

Vidya Sagar (8):
  PCI: tegra194: Fix polling delay for L2 state
  PCI: tegra194: Don't force the device into the D0 state before L2
  PCI: tegra194: Use devm_gpiod_get_optional() to parse
    "nvidia,refclk-select"
  PCI: tegra194: Disable direct speed change for Endpoint
  PCI: tegra194: Set LTR message request before PCIe link up
  PCI: tegra194: Allow system suspend when the Endpoint link is not up
  PCI: tegra194: Free up EP resources during remove()
  PCI: tegra194: Disable L1.2 capability of Tegra234 EP

 drivers/pci/controller/dwc/pcie-designware.c |   4 +-
 drivers/pci/controller/dwc/pcie-designware.h |   2 +
 drivers/pci/controller/dwc/pcie-tegra194.c   | 199 ++++++++++---------
 3 files changed, 109 insertions(+), 96 deletions(-)

-- 
2.34.1

On Wed, 25 Mar 2026 00:37:41 +0530, Manikanta Maddireddy wrote:
> This series[1] was originally posted by Vidya Sagar, and I have rebased
> it onto 6.19.0-rc6-next. I addressed review comments and split this into
> two series, one for fixes(current) and the other is for enhancements.
> I verified these patches on Jetson AGX Orin(Tegra234 SoC).
> 
> I added below four new patches to fix bugs, commit message of each
> patch has the details on the bug and fix.
>  - PCI: tegra194: Use HW version number
>  - PCI: tegra194: Fix CBB timeout caused by DBI access before core power-on
>  - PCI: tegra194: Disable PERST IRQ only in Endpoint mode
> 
> [...]

Applied, thanks!

[01/14] PCI: tegra194: Fix polling delay for L2 state
        commit: 368e83ebef4527fa5dae9074e9e8086bb8f8c15f
[02/14] PCI: tegra194: Increase LTSSM poll time on surprise down
        commit: 592dd01fa4bed72b1b523e48a8e0336002169e98
[03/14] PCI: tegra194: Disable LTSSM after transition to detect on surprise down
        commit: 5b2322bd2b0a3d3d98dc1e27ec372221faa98140
[04/14] PCI: tegra194: Don't force the device into the D0 state before L2
        commit: 7049b21df37359e2da77e1c553062d60bd175f4f
[05/14] PCI: tegra194: Disable PERST IRQ only in Endpoint mode
        commit: 5e05484b857981bdf7ad247d8bd9e1733edebe9b
[06/14] PCI: tegra194: Use devm_gpiod_get_optional() to parse "nvidia,refclk-select"
        commit: 4ee540f02d5de5ccabcfee266f12e8bec960564b
[07/14] PCI: tegra194: Disable direct speed change for Endpoint
        commit: 431451cf9acdec5df2210d6a4139a0f8678fc6bd
[08/14] PCI: tegra194: Set LTR message request before PCIe link up
        commit: 24fa3bae1337e91eafdcd6f45dc89edbff4a8e71
[09/14] PCI: tegra194: Allow system suspend when the Endpoint link is not up
        commit: f6faa564bd25742d814382de582a5069b9a48f57
[10/14] PCI: tegra194: Free up EP resources during remove()
        commit: 33d10df4c93fc8dc455275ee704157a1b4b3f60d
[11/14] PCI: tegra194: Use DWC IP core version
        commit: 645e07639d6bdfaf1836b73fbf5547bb054d225f
[12/14] PCI: dwc: Apply ECRC workaround to DesignWare 5.00a as well
        commit: b210b15956061e27f2bbb7a740792227c34ee338
[13/14] PCI: tegra194: Disable L1.2 capability of Tegra234 EP
        commit: 1443e9be158dc199b279a7fd26fa960b1833b9c2
[14/14] PCI: tegra194: Fix CBB timeout caused by DBI access before core power-on
        commit: 93d2f203b330f3f487a3786fe19dc84c618f2b3e

Best regards,
-- 
Manivannan Sadhasivam <mani@kernel.org>