On Tue, Aug 08, 2023 at 01:34:17PM +0800, Richard Zhu wrote:
> Add the i.MX6SX PCIe EP support.
>
> Signed-off-by: Richard Zhu <hongxing.zhu@xxxxxxx>
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>
- Mani
> ---
> drivers/pci/controller/dwc/pci-imx6.c | 18 ++++++++++++++++++
> 1 file changed, 18 insertions(+)
>
> diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
> index 9a6531ddfef2..43c5251f5160 100644
> --- a/drivers/pci/controller/dwc/pci-imx6.c
> +++ b/drivers/pci/controller/dwc/pci-imx6.c
> @@ -48,6 +48,7 @@ enum imx6_pcie_variants {
> IMX6Q,
> IMX6Q_EP,
> IMX6SX,
> + IMX6SX_EP,
> IMX6QP,
> IMX6QP_EP,
> IMX7D,
> @@ -362,6 +363,7 @@ static void imx6_pcie_init_phy(struct imx6_pcie *imx6_pcie)
> IMX7D_GPR12_PCIE_PHY_REFCLK_SEL, 0);
> break;
> case IMX6SX:
> + case IMX6SX_EP:
> regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12,
> IMX6SX_GPR12_PCIE_RX_EQ_MASK,
> IMX6SX_GPR12_PCIE_RX_EQ_2);
> @@ -560,6 +562,7 @@ static int imx6_pcie_enable_ref_clk(struct imx6_pcie *imx6_pcie)
>
> switch (imx6_pcie->drvdata->variant) {
> case IMX6SX:
> + case IMX6SX_EP:
> ret = clk_prepare_enable(imx6_pcie->pcie_inbound_axi);
> if (ret) {
> dev_err(dev, "unable to enable pcie_axi clock\n");
> @@ -621,6 +624,7 @@ static void imx6_pcie_disable_ref_clk(struct imx6_pcie *imx6_pcie)
> {
> switch (imx6_pcie->drvdata->variant) {
> case IMX6SX:
> + case IMX6SX_EP:
> clk_disable_unprepare(imx6_pcie->pcie_inbound_axi);
> break;
> case IMX6QP:
> @@ -718,6 +722,7 @@ static void imx6_pcie_assert_core_reset(struct imx6_pcie *imx6_pcie)
> reset_control_assert(imx6_pcie->apps_reset);
> break;
> case IMX6SX:
> + case IMX6SX_EP:
> regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12,
> IMX6SX_GPR12_PCIE_TEST_POWERDOWN,
> IMX6SX_GPR12_PCIE_TEST_POWERDOWN);
> @@ -782,6 +787,7 @@ static int imx6_pcie_deassert_core_reset(struct imx6_pcie *imx6_pcie)
> imx7d_pcie_wait_for_phy_pll_lock(imx6_pcie);
> break;
> case IMX6SX:
> + case IMX6SX_EP:
> regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR5,
> IMX6SX_GPR5_PCIE_BTNRST_RESET, 0);
> break;
> @@ -840,6 +846,7 @@ static void imx6_pcie_ltssm_enable(struct device *dev)
> case IMX6Q:
> case IMX6Q_EP:
> case IMX6SX:
> + case IMX6SX_EP:
> case IMX6QP:
> case IMX6QP_EP:
> regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12,
> @@ -866,6 +873,7 @@ static void imx6_pcie_ltssm_disable(struct device *dev)
> case IMX6Q:
> case IMX6Q_EP:
> case IMX6SX:
> + case IMX6SX_EP:
> case IMX6QP:
> case IMX6QP_EP:
> regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12,
> @@ -1198,6 +1206,7 @@ static void imx6_pcie_pm_turnoff(struct imx6_pcie *imx6_pcie)
> /* Others poke directly at IOMUXC registers */
> switch (imx6_pcie->drvdata->variant) {
> case IMX6SX:
> + case IMX6SX_EP:
> case IMX6QP:
> case IMX6QP_EP:
> regmap_update_bits(imx6_pcie->iomuxc_gpr, IOMUXC_GPR12,
> @@ -1361,6 +1370,7 @@ static int imx6_pcie_probe(struct platform_device *pdev)
>
> switch (imx6_pcie->drvdata->variant) {
> case IMX6SX:
> + case IMX6SX_EP:
> imx6_pcie->pcie_inbound_axi = devm_clk_get(dev,
> "pcie_inbound_axi");
> if (IS_ERR(imx6_pcie->pcie_inbound_axi))
> @@ -1535,6 +1545,13 @@ static const struct imx6_pcie_drvdata drvdata[] = {
> IMX6_PCIE_FLAG_SUPPORTS_SUSPEND,
> .gpr = "fsl,imx6q-iomuxc-gpr",
> },
> + [IMX6SX_EP] = {
> + .variant = IMX6SX_EP,
> + .mode = DW_PCIE_EP_TYPE,
> + .flags = IMX6_PCIE_FLAG_IMX6_PHY,
> + .gpr = "fsl,imx6q-iomuxc-gpr",
> + .epc_features = &imx6q_pcie_epc_features,
> + },
> [IMX6QP] = {
> .variant = IMX6QP,
> .flags = IMX6_PCIE_FLAG_IMX6_PHY |
> @@ -1590,6 +1607,7 @@ static const struct of_device_id imx6_pcie_of_match[] = {
> { .compatible = "fsl,imx6q-pcie", .data = &drvdata[IMX6Q], },
> { .compatible = "fsl,imx6q-pcie-ep", .data = &drvdata[IMX6Q_EP], },
> { .compatible = "fsl,imx6sx-pcie", .data = &drvdata[IMX6SX], },
> + { .compatible = "fsl,imx6sx-pcie-ep", .data = &drvdata[IMX6SX_EP], },
> { .compatible = "fsl,imx6qp-pcie", .data = &drvdata[IMX6QP], },
> { .compatible = "fsl,imx6qp-pcie-ep", .data = &drvdata[IMX6QP_EP], },
> { .compatible = "fsl,imx7d-pcie", .data = &drvdata[IMX7D], },
> --
> 2.34.1
>
--
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