On 12/06/19 3:23 PM, Vidya Sagar wrote:
> Add support for Tegra194 P2U (PIPE to UPHY) module block which is a glue
> module instantiated one for each PCIe lane between Synopsys DesignWare core
> based PCIe IP and Universal PHY block.
>
> Signed-off-by: Vidya Sagar <vidyas@xxxxxxxxxx>
> Reviewed-by: Rob Herring <robh@xxxxxxxxxx>
> Acked-by: Thierry Reding <treding@xxxxxxxxxx>
Acked-by: Kishon Vijay Abraham I <kishon@xxxxxx>
> ---
> Changes since [v9]:
> * None
>
> Changes since [v8]:
> * None
>
> Changes since [v7]:
> * None
>
> Changes since [v6]:
> * None
>
> Changes since [v5]:
> * Added Sob
> * Changed node name from "p2u@xxxxxxxx" to "phy@xxxxxxxx"
>
> Changes since [v4]:
> * None
>
> Changes since [v3]:
> * None
>
> Changes since [v2]:
> * Changed node label to reflect new format that includes either 'hsio' or
> 'nvhs' in its name to reflect which UPHY brick they belong to
>
> Changes since [v1]:
> * This is a new patch in v2 series
>
> .../bindings/phy/phy-tegra194-p2u.txt | 28 +++++++++++++++++++
> 1 file changed, 28 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/phy/phy-tegra194-p2u.txt
>
> diff --git a/Documentation/devicetree/bindings/phy/phy-tegra194-p2u.txt b/Documentation/devicetree/bindings/phy/phy-tegra194-p2u.txt
> new file mode 100644
> index 000000000000..d23ff90baad5
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/phy-tegra194-p2u.txt
> @@ -0,0 +1,28 @@
> +NVIDIA Tegra194 P2U binding
> +
> +Tegra194 has two PHY bricks namely HSIO (High Speed IO) and NVHS (NVIDIA High
> +Speed) each interfacing with 12 and 8 P2U instances respectively.
> +A P2U instance is a glue logic between Synopsys DesignWare Core PCIe IP's PIPE
> +interface and PHY of HSIO/NVHS bricks. Each P2U instance represents one PCIe
> +lane.
> +
> +Required properties:
> +- compatible: For Tegra19x, must contain "nvidia,tegra194-p2u".
> +- reg: Should be the physical address space and length of respective each P2U
> + instance.
> +- reg-names: Must include the entry "ctl".
> +
> +Required properties for PHY port node:
> +- #phy-cells: Defined by generic PHY bindings. Must be 0.
> +
> +Refer to phy/phy-bindings.txt for the generic PHY binding properties.
> +
> +Example:
> +
> +p2u_hsio_0: phy@3e10000 {
> + compatible = "nvidia,tegra194-p2u";
> + reg = <0x03e10000 0x10000>;
> + reg-names = "ctl";
> +
> + #phy-cells = <0>;
> +};
>
