On Sat, Jul 09, 2016 at 10:00:55AM +0530, Rajesh Bhagat wrote:
> Describes the qoriq usb 2.0 phy driver binding, currently used
> for LS1021A and LS1012A platform.
>
> Signed-off-by: Rajesh Bhagat <rajesh.bhagat@xxxxxxx>
> ---
> Changes in v2:
> - Adds DT binding documentation for qoriq usb 2.0 phy
> - Changed the compatible string to fsl,qoriq-usb2-phy
>
> .../devicetree/bindings/phy/qoriq-usb2-phy.txt | 22 ++++++++++++++++++++++
> 1 file changed, 22 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/phy/qoriq-usb2-phy.txt
>
> diff --git a/Documentation/devicetree/bindings/phy/qoriq-usb2-phy.txt b/Documentation/devicetree/bindings/phy/qoriq-usb2-phy.txt
> new file mode 100644
> index 0000000..f043855
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/qoriq-usb2-phy.txt
> @@ -0,0 +1,22 @@
> +QorIQ SoC USB 2.0 PHY
> +
> +Required properties:
> + - compatible: should be "fsl,qoriq-usb2-phy",
> + Wherever applicable, the version of the USB PHY should
> + also be mentioned (for eg. fsl,qoriq-usb2-phy-vX.Y).
> + where, X = Phy vendor(Legacy = 1, NXP = 2) and Y = PHY version
What does Legacy mean? FSL?
Use SoC specific compatible strings.
> + - reg : Address and length of the usb phy control register set.
> + - phy_type : For multi port host USB controllers, should be one of
> + "ulpi", or "serial". For dual role USB controllers, should be
> + one of "ulpi", "utmi", "utmi_wide", or "serial".
> +
> +The main purpose of this PHY driver is to enable the USB PHY reference clock
> +gate on the QorIQ SOC for USB2 PHY OR implement errata workaround in
> +future. Otherwise it is just an NOP PHY driver.
> +
> +usbphy0: usbphy@8600000 {
> + compatible = "fsl,qoriq-usb2-phy" "fsl,qoriq-usb2-phy-vX.Y";
most specific first.
> + reg = <0x0 0x8600000 0x0 0x1000>;
> + #phy-cells = <0>;
> + phy_type = "ulpi";
> +};
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