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.
Thanks,
Daniel
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