Re: [PATCH v2 4/4] PCI: imx6: Add i.MX8Q PCIe Endpoint (EP) support

[Manivannan Sadhasivam]

On Mon, Sep 23, 2024 at 02:59:22PM -0400, Frank Li wrote:

Subject should specify 'i.MX8Q series of SoCs'. So it would become:

'PCI: imx6: Add PCIe Endpoint (EP) support for i.MX8Q series of SoCs'

> Add support for i.MX8Q series (i.MX8QM, i.MX8QXP, and i.MX8DXL) PCIe
> Endpoint (EP). On i.MX8Q platforms, the PCI bus addresses differ from the
> CPU addresses. The DesignWare (DWC) driver already handles this in the
> common code.
> 
> Signed-off-by: Frank Li <Frank.Li@xxxxxxx>

Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@xxxxxxxxxx>

- Mani

> ---
>  drivers/pci/controller/dwc/pci-imx6.c | 20 ++++++++++++++++++++
>  1 file changed, 20 insertions(+)
> 
> diff --git a/drivers/pci/controller/dwc/pci-imx6.c b/drivers/pci/controller/dwc/pci-imx6.c
> index bdc2b372e6c13..1e58c24137e7f 100644
> --- a/drivers/pci/controller/dwc/pci-imx6.c
> +++ b/drivers/pci/controller/dwc/pci-imx6.c
> @@ -70,6 +70,7 @@ enum imx_pcie_variants {
>  	IMX8MQ_EP,
>  	IMX8MM_EP,
>  	IMX8MP_EP,
> +	IMX8Q_EP,
>  	IMX95_EP,
>  };
>  
> @@ -1079,6 +1080,16 @@ static const struct pci_epc_features imx8m_pcie_epc_features = {
>  	.align = SZ_64K,
>  };
>  
> +static const struct pci_epc_features imx8q_pcie_epc_features = {
> +	.linkup_notifier = false,
> +	.msi_capable = true,
> +	.msix_capable = false,
> +	.bar[BAR_1] = { .type = BAR_RESERVED, },
> +	.bar[BAR_3] = { .type = BAR_RESERVED, },
> +	.bar[BAR_5] = { .type = BAR_RESERVED, },
> +	.align = SZ_64K,
> +};
> +
>  /*
>   * BAR#	| Default BAR enable	| Default BAR Type	| Default BAR Size	| BAR Sizing Scheme
>   * ================================================================================================
> @@ -1645,6 +1656,14 @@ static const struct imx_pcie_drvdata drvdata[] = {
>  		.epc_features = &imx8m_pcie_epc_features,
>  		.enable_ref_clk = imx8mm_pcie_enable_ref_clk,
>  	},
> +	[IMX8Q_EP] = {
> +		.variant = IMX8Q_EP,
> +		.flags = IMX_PCIE_FLAG_HAS_PHYDRV,
> +		.mode = DW_PCIE_EP_TYPE,
> +		.epc_features = &imx8q_pcie_epc_features,
> +		.clk_names = imx8q_clks,
> +		.clks_cnt = ARRAY_SIZE(imx8q_clks),
> +	},
>  	[IMX95_EP] = {
>  		.variant = IMX95_EP,
>  		.flags = IMX_PCIE_FLAG_HAS_SERDES |
> @@ -1674,6 +1693,7 @@ static const struct of_device_id imx_pcie_of_match[] = {
>  	{ .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], },
> +	{ .compatible = "fsl,imx8q-pcie-ep", .data = &drvdata[IMX8Q_EP], },
>  	{ .compatible = "fsl,imx95-pcie-ep", .data = &drvdata[IMX95_EP], },
>  	{},
>  };
> 
> -- 
> 2.34.1
> 

-- 
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