On Mon, Jul 08, 2024 at 01:08:06PM -0400, Frank Li wrote:
> From: Richard Zhu <hongxing.zhu@xxxxxxx>
>
> Correct occasional MSI triggering failures in i.MX8MP PCIe EP by applying
> the correct hardware outbound alignment requirement.
>
> The i.MX platform has a restriction about outbound address translation. The
> pci-epc-mem uses page_size to manage it. Set the correct page_size for i.MX
> platform to meet the hardware requirement, which is the same as inbound
> address alignment. Align it with epc_features::align.
>
> Fixes: 1bd0d43dcf3b ("PCI: imx6: Clean up addr_space retrieval code")
> Signed-off-by: Richard Zhu <hongxing.zhu@xxxxxxx>
> Acked-by: Jason Liu <jason.hui.liu@xxxxxxx>
> Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
- Mani
> ---
> drivers/pci/controller/dwc/pci-imx6.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
> index 9a71b8aa09b3c..ca9a000c9a96d 100644
> --- a/drivers/pci/controller/dwc/pci-imx6.c
> +++ b/drivers/pci/controller/dwc/pci-imx6.c
> @@ -1118,6 +1118,8 @@ static int imx6_add_pcie_ep(struct imx6_pcie *imx6_pcie,
> if (imx6_check_flag(imx6_pcie, IMX6_PCIE_FLAG_SUPPORT_64BIT))
> dma_set_mask_and_coherent(dev, DMA_BIT_MASK(64));
>
> + ep->page_size = imx6_pcie->drvdata->epc_features->align;
> +
> ret = dw_pcie_ep_init(ep);
> if (ret) {
> dev_err(dev, "failed to initialize endpoint\n");
>
> --
> 2.34.1
>
--
மணிவண்ணன் சதாசிவம்
