On Wed, Sep 23, 2015 at 06:24:01PM +0530, Subbaraya Sundeep Bhatta wrote:
> This patch adds binding doc info for generic ULPI PHYs
> platform driver.
>
> Signed-off-by: Subbaraya Sundeep Bhatta <sbhatta@xxxxxxxxxx>
> ---
> .../devicetree/bindings/usb/ulpi-platform-phy.txt | 34 ++++++++++++++++++++
> 1 files changed, 34 insertions(+), 0 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/usb/ulpi-platform-phy.txt
>
> diff --git a/Documentation/devicetree/bindings/usb/ulpi-platform-phy.txt b/Documentation/devicetree/bindings/usb/ulpi-platform-phy.txt
> new file mode 100644
> index 0000000..7b8cbb4
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/usb/ulpi-platform-phy.txt
> @@ -0,0 +1,34 @@
> +Platform driver for generic ULPI PHYs
> +
> +Required properties:
> +- compatible : Should be "ulpi-phy"
> +- reg : Physical base address and size of the USB
> + controller registers map to which this PHY
> + is connected.
> +- view-port : Should contain viewport register offset of the
> + USB controller to which this PHY is connected
> +Optional properties:
> +- drv-vbus : required if turning VBUS on/off has to be driven
> + by writing to PHY. This feature depends on board
> + design.
> +
> +Example:
> +Below example shows the PHY binding for Chipidea USB controller which has
> +ulpi viewport register at 0x0170
> +
> + usb_phy0: phy0 {
> + compatible = "ulpi-phy";
> + reg = <0xe0002000 0x1000>;
> + view-port = <0x0170>;
> + drv-vbus;
> + };
> +
> + usb0: usb@e0002000 {
> + compatible = "chipidea,usb2";
> + interrupt-parent = <&intc>;
> + interrupts = <0 21 4>;
> + reg = <0xe0002000 0x1000>;
Although just call devm_ioremap twice for the same register region
does not cause any errors, I am not sure if it will has other
potential problems. Cc: arm list.
> + phy_type = "ulpi";
> + dr_mode = "host";
> + usb-phy = <&usb_phy0>;
> + };
> --
> 1.7.1
>
--
Best Regards,
Peter Chen
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