On Sat, Feb 19, 2011 at 3:52 AM, Anatolij Gustschin <ag...@denx.de> wrote:
>
> Look at the USB node in the device tree for your board. Does it
> contain the "dr_mode" property? For USB gadget the value of this
> property should be "peripheral".
> The device tree for MPC8313 ERDB in mainline tree doesn't specify
> this property, so the host mode is the default operation mode here.
> Therefore the platform device "fsl-usb2-udc" won't be created
> while booting and since there is no appropriate platform device,
> the probing is not done. This might be the case on your board,
> too. Try with dr_mode = "peripheral"; in the usb node in your
> device tree.
>
Yes, it's there. Here's the DTS entry in case anything else sticks out:
usb@23000 {
compatible = "fsl-usb2-dr";
reg = <0x23000 0x1000>;
#address-cells = <1>;
#size-cells = <0>;
interrupt-parent = <&ipic>;
interrupts = <38 0x8>;
phy_type = "utmi_wide";
dr_mode = "peripheral";
sleep = <&pmc 0x00300000>;
};
I think dr_mode was required in past kernel versions as well (since I
seem to recall bumping in to the problem you describe a long time ago
when we first tried to get device-mode USB working). :)
Thanks
--
Matthew L. Creech
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