Re: [PATCH v3 0/2] PCI: dw-rockchip: hide broken ATS cap in EP-mode

[Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>]

On Mon, Mar 10, 2025 at 10:48:26AM +0100, Niklas Cassel wrote:
> Hello there,
> 
> Address Translation Services (ATS) is broken on rk3588 when running the
> PCIe controller in Endpoint Mode.
> 
> This causes IOTLB invalidation timeout errors on the host side when using
> and rk3588 in Endpoint Mode, and you are unable to run pci_endpoint_test.
> 
> Solve this by hiding the ATS capability.
> With this, we do not get any IOTLB invalidation timeouts, and we can run
> pci_endpoint_test successfully.
> 

Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>

- Mani

> 
> Changes since v2:
> -Added missing EXPORT_SYMBOL_GPL().
> 
> 
> Niklas Cassel (2):
>   PCI: dwc: ep: Add dw_pcie_ep_hide_ext_capability()
>   PCI: dw-rockchip: Hide broken ATS capability
> 
>  .../pci/controller/dwc/pcie-designware-ep.c   | 39 +++++++++++++++++++
>  drivers/pci/controller/dwc/pcie-designware.h  |  7 ++++
>  drivers/pci/controller/dwc/pcie-dw-rockchip.c | 27 +++++++++++++
>  3 files changed, 73 insertions(+)
> 
> -- 
> 2.48.1
> 

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