Subject: Re: [PATCH v2 06/10] dt-bindings: phy: mvebu-utmi: add UTMI PHY bindings

From: Rob Herring <[email-masked]>
Date: Tue, 15 Jan 2019 15:44:29 -0600

On Fri, Jan 11, 2019 at 02:31:29PM +0100, Miquel Raynal wrote:
> Add bindings for Marvell Armada 3700 USB2 UTMI+ PHY.
> 
> Signed-off-by: Miquel Raynal <[email-masked]>
> ---
>  .../bindings/phy/phy-mvebu-utmi.txt           | 37 +++++++++++++++++++
>  1 file changed, 37 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/phy/phy-mvebu-utmi.txt
> 
> diff --git a/Documentation/devicetree/bindings/phy/phy-mvebu-utmi.txt b/Documentation/devicetree/bindings/phy/phy-mvebu-utmi.txt
> new file mode 100644
> index 000000000000..4ade05ce5d51
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/phy-mvebu-utmi.txt
> @@ -0,0 +1,37 @@
> +MVEBU A3700 UTMI PHY
> +--------------------
> +
> +USB2 UTMI+ PHY controllers can be found on the following Marvell MVEBU SoCs:
> +* Armada 3700
> +
> +On Armada 3700, there are two USB controllers, one is compatible with the USB2
> +and USB3 specifications and supports OTG. The other one is USB2 compliant and
> +only supports host mode. Both of these controllers come with a UTMI PHY.

This paragraph says the controllers are different, but are the PHYs 
different?

> +
> +Required Properties:
> +
> +- compatible: Should be one of:
> +	      * "marvell,a3700-utmi-host-phy" for the PHY connected to
> +	        the USB2 host-only controller.
> +	      * "marvell,a3700-utmi-otg-phy" for the PHY connected to
> +	        the USB3 and USB2 OTG capable controller.
> +- reg: PHY IP register range.
> +- marvell,usb-misc-reg: handle on the "USB miscellaneous registers" shared
> +			region covering registers related to both the host
> +			controller and the PHY.
> +- #phy-cells: Standard property (Documentation: phy-bindings.txt) Should be 0.
> +
> +
> +Example:
> +
> +	usb2_utmi_host_phy: phy@5f000 {
> +		compatible = "marvell,armada-3700-utmi-host-phy";
> +		reg = <0x5f000 0x800>;
> +		marvell,usb-misc-reg = <&usb2_syscon>;
> +		#phy-cells = <0>;
> +	};
> +
> +	usb2_syscon: system-controller@5f800 {
> +		compatible = "syscon", "simple-mfd";

This is not valid because there's not a specific compatible string and 
'simple-mfd' implies there are child nodes.

> +		reg = <0x5f800 0x800>;
> +	};
> -- 
> 2.19.1

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