PCI: imx6: Add i.MX8MP PCIe EP support

Add the i.MX8MP PCIe EP support.

Link: https://lore.kernel.org/r/1673847684-31893-15-git-send-email-hongxing.zhu@nxp.com
Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>

diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
index eab332e..55a0405 100644 (file)
--- a/drivers/pci/controller/dwc/pci-imx6.c
+++ b/drivers/pci/controller/dwc/pci-imx6.c
@@ -54,6 +54,7 @@ enum imx6_pcie_variants {
        IMX8MP,
        IMX8MQ_EP,
        IMX8MM_EP,
+       IMX8MP_EP,
 };
 
 #define IMX6_PCIE_FLAG_IMX6_PHY                        BIT(0)
@@ -158,7 +159,8 @@ static unsigned int imx6_pcie_grp_offset(const struct imx6_pcie *imx6_pcie)
                imx6_pcie->drvdata->variant != IMX8MQ_EP &&
                imx6_pcie->drvdata->variant != IMX8MM &&
                imx6_pcie->drvdata->variant != IMX8MM_EP &&
-               imx6_pcie->drvdata->variant != IMX8MP);
+               imx6_pcie->drvdata->variant != IMX8MP &&
+               imx6_pcie->drvdata->variant != IMX8MP_EP);
        return imx6_pcie->controller_id == 1 ? IOMUXC_GPR16 : IOMUXC_GPR14;
 }
 
@@ -323,6 +325,7 @@ static void imx6_pcie_init_phy(struct imx6_pcie *imx6_pcie)
        case IMX8MM:
        case IMX8MM_EP:
        case IMX8MP:
+       case IMX8MP_EP:
                /*
                 * The PHY initialization had been done in the PHY
                 * driver, break here directly.
@@ -584,6 +587,7 @@ static int imx6_pcie_enable_ref_clk(struct imx6_pcie *imx6_pcie)
        case IMX8MQ:
        case IMX8MQ_EP:
        case IMX8MP:
+       case IMX8MP_EP:
                ret = clk_prepare_enable(imx6_pcie->pcie_aux);
                if (ret) {
                        dev_err(dev, "unable to enable pcie_aux clock\n");
@@ -631,6 +635,7 @@ static void imx6_pcie_disable_ref_clk(struct imx6_pcie *imx6_pcie)
        case IMX8MQ:
        case IMX8MQ_EP:
        case IMX8MP:
+       case IMX8MP_EP:
                clk_disable_unprepare(imx6_pcie->pcie_aux);
                break;
        default:
@@ -701,6 +706,7 @@ static void imx6_pcie_assert_core_reset(struct imx6_pcie *imx6_pcie)
        case IMX8MM:
        case IMX8MM_EP:
        case IMX8MP:
+       case IMX8MP_EP:
                reset_control_assert(imx6_pcie->apps_reset);
                break;
        case IMX6SX:
@@ -779,6 +785,7 @@ static int imx6_pcie_deassert_core_reset(struct imx6_pcie *imx6_pcie)
        case IMX8MM:
        case IMX8MM_EP:
        case IMX8MP:
+       case IMX8MP_EP:
                break;
        }
 
@@ -831,6 +838,7 @@ static void imx6_pcie_ltssm_enable(struct device *dev)
        case IMX8MM:
        case IMX8MM_EP:
        case IMX8MP:
+       case IMX8MP_EP:
                reset_control_deassert(imx6_pcie->apps_reset);
                break;
        }
@@ -853,6 +861,7 @@ static void imx6_pcie_ltssm_disable(struct device *dev)
        case IMX8MM:
        case IMX8MM_EP:
        case IMX8MP:
+       case IMX8MP_EP:
                reset_control_assert(imx6_pcie->apps_reset);
                break;
        }
@@ -1105,6 +1114,7 @@ static int imx6_add_pcie_ep(struct imx6_pcie *imx6_pcie,
        switch (imx6_pcie->drvdata->variant) {
        case IMX8MQ_EP:
        case IMX8MM_EP:
+       case IMX8MP_EP:
                pcie_dbi2_offset = SZ_1M;
                break;
        default:
@@ -1319,6 +1329,7 @@ static int imx6_pcie_probe(struct platform_device *pdev)
        case IMX8MM:
        case IMX8MM_EP:
        case IMX8MP:
+       case IMX8MP_EP:
                imx6_pcie->pcie_aux = devm_clk_get(dev, "pcie_aux");
                if (IS_ERR(imx6_pcie->pcie_aux))
                        return dev_err_probe(dev, PTR_ERR(imx6_pcie->pcie_aux),
@@ -1488,6 +1499,11 @@ static const struct imx6_pcie_drvdata drvdata[] = {
                .mode = DW_PCIE_EP_TYPE,
                .gpr = "fsl,imx8mm-iomuxc-gpr",
        },
+       [IMX8MP_EP] = {
+               .variant = IMX8MP_EP,
+               .mode = DW_PCIE_EP_TYPE,
+               .gpr = "fsl,imx8mp-iomuxc-gpr",
+       },
 };
 
 static const struct of_device_id imx6_pcie_of_match[] = {
@@ -1500,6 +1516,7 @@ static const struct of_device_id imx6_pcie_of_match[] = {
        { .compatible = "fsl,imx8mp-pcie", .data = &drvdata[IMX8MP], },
        { .compatible = "fsl,imx8mq-pcie-ep", .data = &drvdata[IMX8MQ_EP], },
        { .compatible = "fsl,imx8mm-pcie-ep", .data = &drvdata[IMX8MM_EP], },
+       { .compatible = "fsl,imx8mp-pcie-ep", .data = &drvdata[IMX8MP_EP], },
        {},
 };