On Wed, 17 Jun 2015 13:43:38 +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>
Reviewed-by: Roger Quadros <rogerq@xxxxxx>
cheers,
-roger
> ---
> Documentation/devicetree/bindings/usb/generic.txt | 15 +++++++++++++++
> 1 file changed, 15 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/usb/generic.txt b/Documentation/devicetree/bindings/usb/generic.txt
> index 477d5bb..bba8257 100644
> --- a/Documentation/devicetree/bindings/usb/generic.txt
> +++ b/Documentation/devicetree/bindings/usb/generic.txt
> @@ -11,6 +11,19 @@ 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). This
> + property is used if any real OTG features(HNP/SRP/ADP)
> + is enabled, if ADP is required, otg-rev should be
> + 0x0200 or above.
> + - hnp-disable: tells OTG controllers we want to disable OTG HNP, normally HNP
> + is the basic function of real OTG except you want it
> + to be a srp-capable only B device.
> + - srp-disable: tells OTG controllers we want to disable OTG SRP, SRP is
> + optional for OTG device.
> + - adp-disable: tells OTG controllers we want to disable OTG ADP, ADP is
> + optional for OTG device.
>
> This is an attribute to a USB controller such as:
>
> @@ -21,4 +34,6 @@ dwc3@4a030000 {
> usb-phy = <&usb2_phy>, <&usb3,phy>;
> maximum-speed = "super-speed";
> dr_mode = "otg";
> + otg-rev = <0x0200>;
> + adp-disable;
> };
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