On Tue, Oct 15, 2019 at 04:36:58PM +0800, Xiaowei Bao wrote:
> Add the documentation for the Device Tree binding of the layerscape
> PCIe GEN4 controller with EP mode.
>
> Signed-off-by: Xiaowei Bao <xiaowei.bao@xxxxxxx>
> ---
> v2:
> - remove the status entry in EP Example.
>
> .../bindings/pci/layerscape-pcie-gen4.txt | 27 +++++++++++++++++++++-
> 1 file changed, 26 insertions(+), 1 deletion(-)
>
> diff --git a/Documentation/devicetree/bindings/pci/layerscape-pcie-gen4.txt b/Documentation/devicetree/bindings/pci/layerscape-pcie-gen4.txt
> index b40fb5d..06f9309 100644
> --- a/Documentation/devicetree/bindings/pci/layerscape-pcie-gen4.txt
> +++ b/Documentation/devicetree/bindings/pci/layerscape-pcie-gen4.txt
> @@ -3,6 +3,8 @@ NXP Layerscape PCIe Gen4 controller
> This PCIe controller is based on the Mobiveil PCIe IP and thus inherits all
> the common properties defined in mobiveil-pcie.txt.
>
> +HOST MODE
> +=========
> Required properties:
> - compatible: should contain the platform identifier such as:
> "fsl,lx2160a-pcie"
> @@ -23,7 +25,20 @@ Required properties:
> - msi-parent : See the generic MSI binding described in
> Documentation/devicetree/bindings/interrupt-controller/msi.txt.
>
> -Example:
> +DEVICE MODE
> +=========
> +Required properties:
> +- compatible: should contain the platform identifier such as:
> + "fsl,lx2160a-pcie-ep"
> +- reg: base addresses and lengths of the PCIe controller register blocks.
> + "regs": PCIe controller registers.
> + "addr_space" EP device CPU address.
> +- apio-wins: number of requested apio outbound windows.
> +
> +Optional Property:
> +- max-functions: Maximum number of functions that can be configured (default 1).
> +
> +RC Example:
>
> pcie@3400000 {
> compatible = "fsl,lx2160a-pcie";
> @@ -50,3 +65,13 @@ Example:
> <0000 0 0 3 &gic 0 0 GIC_SPI 111 IRQ_TYPE_LEVEL_HIGH>,
> <0000 0 0 4 &gic 0 0 GIC_SPI 112 IRQ_TYPE_LEVEL_HIGH>;
> };
> +
> +EP Example:
> +
> + pcie_ep@3400000 {
To repeat my previous comment:
pcie-endpoint@...
> + compatible = "fsl,lx2160a-pcie-ep";
> + reg = <0x00 0x03400000 0x0 0x00100000
> + 0x80 0x00000000 0x8 0x00000000>;
> + reg-names = "regs", "addr_space";
> + apio-wins = <8>;
> + };
> --
> 2.9.5
>
