linux-kernel - Re: [PATCH V10 10/15] dt-bindings: PHY: P2U: Add Tegra194 P2U block

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Date:   Thu, 20 Jun 2019 12:52:16 +0530
From:   Kishon Vijay Abraham I <kishon@...com>
To:     Vidya Sagar <vidyas@...dia.com>, <lorenzo.pieralisi@....com>,
        <bhelgaas@...gle.com>, <robh+dt@...nel.org>,
        <mark.rutland@....com>, <thierry.reding@...il.com>,
        <jonathanh@...dia.com>, <catalin.marinas@....com>,
        <will.deacon@....com>, <jingoohan1@...il.com>,
        <gustavo.pimentel@...opsys.com>
CC:     <digetx@...il.com>, <mperttunen@...dia.com>,
        <linux-pci@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <kthota@...dia.com>,
        <mmaddireddy@...dia.com>, <sagar.tv@...il.com>
Subject: Re: [PATCH V10 10/15] dt-bindings: PHY: P2U: Add Tegra194 P2U block



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@...dia.com>
> Reviewed-by: Rob Herring <robh@...nel.org>
> Acked-by: Thierry Reding <treding@...dia.com>

Acked-by: Kishon Vijay Abraham I <kishon@...com>
> ---
> 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@...xxxxx" to "phy@...xxxxx"
> 
> 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@...0000 {
> +	compatible = "nvidia,tegra194-p2u";
> +	reg = <0x03e10000 0x10000>;
> +	reg-names = "ctl";
> +
> +	#phy-cells = <0>;
> +};
>