linux-kernel - Re: [PATCH v2 1/2] dt-bindings: phy: Add binding doc for Stingray PCIe PHY

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Message-ID: <424c21ea-e751-16e8-71b0-d05537b9e0b3@ti.com>
Date:   Fri, 29 Jun 2018 12:06:59 +0530
From:   Kishon Vijay Abraham I <kishon@...com>
To:     Ray Jui <ray.jui@...adcom.com>, <robh+dt@...nel.org>,
        <devicetree@...r.kernel.org>
CC:     <linux-kernel@...r.kernel.org>,
        <bcm-kernel-feedback-list@...adcom.com>
Subject: Re: [PATCH v2 1/2] dt-bindings: phy: Add binding doc for Stingray
 PCIe PHY

+Rob and device tree list

On Thursday 21 June 2018 05:48 AM, Ray Jui wrote:
> Add binding document for Stingray PCIe PHYs for both PAXB and PAXC based
> root complex
> 
> Signed-off-by: Ray Jui <ray.jui@...adcom.com>
> Reviewed-by: Scott Branden <scott.branden@...adcom.com>
> ---
>  .../devicetree/bindings/phy/brcm,sr-pcie-phy.txt   | 39 ++++++++++++++++++++++
>  1 file changed, 39 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/phy/brcm,sr-pcie-phy.txt
> 
> diff --git a/Documentation/devicetree/bindings/phy/brcm,sr-pcie-phy.txt b/Documentation/devicetree/bindings/phy/brcm,sr-pcie-phy.txt
> new file mode 100644
> index 0000000..c2eede6
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/brcm,sr-pcie-phy.txt
> @@ -0,0 +1,39 @@
> +Broadcom Stingray PCIe PHY
> +
> +Required properties:
> +- compatible: must be "brcm,sr-pcie-phy"
> +- brcm,sr-cdru: phandle to the CDRU syscon node
> +- brcm,sr-mhb: phandle to the MHB syscon node
> +- #phy-cells: Must be 1, denotes the PHY index
> +
> +For PAXB based root complex, one can have a configuration of up to 8 PHYs
> +PHY index goes from 0 to 7
> +
> +For the internal PAXC based root complex, PHY index is always 8
> +
> +Example:
> +	mhb: syscon@...01000 {
> +		compatible = "brcm,sr-mhb", "syscon";
> +		reg = <0 0x60401000 0 0x38c>;
> +	};
> +
> +	cdru: syscon@...1d000 {
> +		compatible = "brcm,sr-cdru", "syscon";
> +		reg = <0 0x6641d000 0 0x400>;
> +	};
> +
> +	pcie_phy: phy {
> +		compatible = "brcm,sr-pcie-phy";
> +		brcm,sr-cdru = <&cdru>;
> +		brcm,sr-mhb = <&mhb>;
> +		#phy-cells = <1>;
> +	};
> +
> +	/* users of the PCIe PHY */
> +
> +	pcie0: pcie@...00000 {
> +		...
> +		...
> +		phys = <&pcie_phy 0>;
> +		phy-names = "pcie-phy";
> +	};
>