On Mon, 8 Jun 2015 23:02:00 +0800
Li Jun <jun.li@xxxxxxxxxxxxx> wrote:
> Add otg version, srp, hnp and adp support for usb OTG port, then those OTG
> features don't have to be decided by usb gadget drivers.
>
> Signed-off-by: Li Jun <jun.li@xxxxxxxxxxxxx>
> ---
> Documentation/devicetree/bindings/usb/generic.txt | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/usb/generic.txt b/Documentation/devicetree/bindings/usb/generic.txt
> index 477d5bb..7386f4a 100644
> --- a/Documentation/devicetree/bindings/usb/generic.txt
> +++ b/Documentation/devicetree/bindings/usb/generic.txt
> @@ -11,6 +11,12 @@ Optional properties:
> "peripheral" and "otg". In case this attribute isn't
> passed via DT, USB DRD controllers should default to
> OTG.
> + - otg-rev: tells usb driver the release number of the OTG and EH supplement
> + with which the device and its descriptors are compliant,
> + in binary-coded decimal (i.e. 2.0 is 0200H).
> + - srp-support: tells OTG controllers we want to enable SRP.
> + - hnp-support: tells OTG controllers we want to enable HNP.
> + - adp-support: tells OTG controllers we want to enable ADP.
should we call these enable-<foo> as it doesn't indicate whether controller supports it or not
but just that the board DT wants to enable it.
>
> This is an attribute to a USB controller such as:
>
> @@ -21,4 +27,8 @@ dwc3@4a030000 {
> usb-phy = <&usb2_phy>, <&usb3,phy>;
> maximum-speed = "super-speed";
> dr_mode = "otg";
> + otg-rev = <0x0200>;
> + srp-support;
> + hnp-support;
> + adp-support;
> };
cheers,
-roger
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