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USB3.0 host support on EVM ES2.0

Alexey Orishko
Intellectual 670 points

Hi,

I'm trying to build the latest kernel from ti-linux-3-8-y-kernel git and I'd like to get at least MSC support on USB3.0 host.

Is there any other TI git I can use to get USB3.0 in any working shape?

Is it possible to state what .config flags I need in order to get USB3.0 host compiled in properly?

I'm after legitimate combination of XHCI, DWC3 and any relevant flags. Do I need any PALMAS_USB flags for this HW?

  • 0
    TI__Prodigy 350 points

    Hi Alexey,

    The support for USB3.0 is answered in this thread http://e2e.ti.com/support/omap/f/885/t/275115.aspx

  • 0 in reply to Rakesh Movva
    Intellectual 670 points

    Well, it's not the answer I'm looking for.

    On the page http://www.ti.com/tool/omap5432-evm TI claims that OMAP5432 has HS USB 3.0 OTG Port among its features. And it was the reason this development board was purchased.

    - Are HW issues with USB 3.0 IP block the reason of lack of software?

    Even if USB3.0 was not tested yet, it would still be nice to know:

    - when will support for USB 3.0 host be added to SDK?

    - Is there any additional git branch to get early (unstable) versions to try?

    Regards,

    Alexey

  • 0 in reply to Alexey Orishko
    Prodigy 30 points

    Hi Alexey,

    the USB 3.0 controller is functional in gadget and host mode here on the uEVM using Linux based on the ti-linux-3-8-y-kernel tree (i.e., the GLSDK 6.01 kernel). With certain combinations of adapters (USB 3.0 micro to USB 3.0 A female) and devices, SuperSpeed does not work. We haven't noticed any issues with HighSpeed, though.

    Excerpts from our config:

    CONFIG_USB_XHCI_HCD=y
    CONFIG_USB_XHCI_PLATFORM=y
    CONFIG_USB_DWC3=y
    CONFIG_USB_DWC3_DUAL_ROLE=y
    CONFIG_PALMAS_USB=y
    CONFIG_OMAP_USB2=y
    CONFIG_OMAP_USB3=y
    CONFIG_OMAP_CONTROL_USB=y
    CONFIG_USB_GADGET=y

    We had to make the following changes to get host mode working:

    • switch controller to host mode by setting mode = <1> for /ocp/omap_dwc3@4a020000/dwc3@4a030000 in the device tree
    • disable XHCI reset: remove the CMD_RESET part from xhci_reset() in drivers/usb/host/xhci.c, see http://comments.gmane.org/gmane.linux.usb.general/86065
    • make sure the ID pin is grounded (J10 can be used for that, IIRC) or alternatively, force smps10_out1 on in the kernel

    Regards,
    Jürg