On 04.03.2013 00:53, Daniel Mack wrote:
> Hi Peter,
>
> On 03.03.2013 23:24, Peter Korsgaard wrote:
>>>>>>> "Daniel" == Daniel Mack <zonque@xxxxxxxxx> writes:
>>
>> Hi,
>>
>> Daniel> On my board, the USB is purely used as host interface, with a
>> Daniel> type B plug soldered. In the DT, I'm using the following
>> Daniel> sniplet in accordance to the documentation of the bindings:
>>
>> Daniel> usb_otg_hs: usb@47400000 {
>> Daniel> compatible = "ti,musb-am33xx";
>> Daniel> reg = <0x47400000 0x1000 /* usbss */
>> Daniel> 0x47401000 0x800 /* musb instance 0 */
>> Daniel> 0x47401800 0x800>; /* musb instance 1 */
>> Daniel> interrupt-parent = <&intc>;
>> Daniel> interrupts = <17 /* usbss */
>> Daniel> 18 /* musb instance 0 */
>> 19> ; /* musb instance 1 */
>> Daniel> multipoint = <1>;
>> Daniel> num-eps = <16>;
>> Daniel> ram-bits = <12>;
>> Daniel> port0-mode = <3>;
>> Daniel> port1-mode = <3>;
>> Daniel> power = <250>;
>> Daniel> ti,hwmods = "usb_otg_hs";
>> Daniel> };
>>
>> Daniel> The relevant config options are
>>
>> Daniel> CONFIG_USB_MUSB_HDRC=y
>> Daniel> # CONFIG_USB_MUSB_TUSB6010 is not set
>> Daniel> # CONFIG_USB_MUSB_OMAP2PLUS is not set
>> Daniel> # CONFIG_USB_MUSB_AM35X is not set
>> Daniel> CONFIG_USB_MUSB_DSPS=y
>> Daniel> CONFIG_MUSB_PIO_ONLY=y
>> Daniel> CONFIG_USB_GADGET=y
>> Daniel> CONFIG_USB_GADGET_DEBUG=y
>> Daniel> CONFIG_USB_GADGET_DEBUG_FILES=y
>> Daniel> CONFIG_USB_GADGET_DEBUG_FS=y
>> Daniel> CONFIG_USB_GADGET_VBUS_DRAW=2
>> Daniel> CONFIG_USB_GADGET_STORAGE_NUM_BUFFERS=2
>> Daniel> CONFIG_USB_GADGET_MUSB_HDRC=y
>>
>> Ehh, I'm confused here. You talk about host mode, a single 'B' (gadget)
>> connector
>
> I'm sorry for the confusion caused. This is a stupid mistake - I'm in
> fact talking about an 'A' type plug of course (host mode).
>
>> and your device tree mentions 2 OTG ports.
>
> That's what I said in a follow up - the same happens for mode '1'.
>
>> What is the configuration exactly?
>
> Again to summarize: host-only mode, type 'A' plug.
>
> The gadget driver is is enabled in the config because the only
> occurrence of usb_add_hcd() in the musb driver is in the gagdget part,
> so supposedly, there has to be a gadget driver loaded in order to make
> the host interface going.
Just be clear: I'd happily help and dig for the reason of this, I'd just
need to know how things are _supposed_ to work ...
Daniel
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