Commit c435669a authored by Richard Zhu's avatar Richard Zhu Committed by Lorenzo Pieralisi
Browse files

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: default avatarRichard Zhu <hongxing.zhu@nxp.com>
Signed-off-by: default avatarLorenzo Pieralisi <lpieralisi@kernel.org>
parent fb3217e2

drivers/pci/controller/dwc/pci-imx6.c

+18 −1
Original line number Diff line number Diff line
@@ -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], },

	{},

};