[PATCH v17 14/15] pci: imx6: Add LUT setting for MSI/IOMMU in Endpoint mode

[Frank Li]

Support only one physical function, so call imx_pcie_add_lut_by_rid(0)
to add a single LUT entry when operating in EP mode.

Signed-off-by: Frank Li <frank...@nxp.com>
---
change from v14 to v16
- none

change from v13 to v14
- new patch
---
 drivers/pci/controller/dwc/pci-imx6.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/pci/controller/dwc/pci-imx6.c 
b/drivers/pci/controller/dwc/pci-imx6.c
index d1b1365e7469e..a6e4630fcf530 100644
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -992,7 +992,10 @@ static int imx_pcie_add_lut(struct imx_pcie *imx_pcie, u16 
rid, u8 sid)
        data1 |= IMX95_PE0_LUT_VLD;
        regmap_write(imx_pcie->iomuxc_gpr, IMX95_PE0_LUT_DATA1, data1);
 
-       data2 = IMX95_PE0_LUT_MASK; /* Match all bits of RID */
+       if (imx_pcie->drvdata->mode == DW_PCIE_EP_TYPE)
+               data2 = 0x7; /* EP side's RID from RC, only 'D' is meansful */
+       else
+               data2 = IMX95_PE0_LUT_MASK; /* Match all bits of RID */
        data2 |= FIELD_PREP(IMX95_PE0_LUT_REQID, rid);
        regmap_write(imx_pcie->iomuxc_gpr, IMX95_PE0_LUT_DATA2, data2);
 
@@ -1622,6 +1625,9 @@ static int imx_pcie_probe(struct platform_device *pdev)
                ret = imx_add_pcie_ep(imx_pcie, pdev);
                if (ret < 0)
                        return ret;
+
+               /* Only support one physical function */
+               imx_pcie_add_lut_by_rid(imx_pcie, 0);
        } else {
                pci->pp.use_atu_msg = true;
                ret = dw_pcie_host_init(&pci->pp);

-- 
2.34.1