Core M3 6Y30 - Linux - USB Dual Role / OTG

[YGoue]

Hello,

I am currently working on the Compute stick ( Core M3-6Y30 ) under Linux 4.9.9 and I'm trying to make it work as an USB Gadget.

I've been looking for information about how to achieve this and found the following :

• According to the I/O Datasheet for the Core M3-6Y30, the USB 3.0 ports should be able of acting in device mode thanks to the Dual Mode functionality.
• According to the following discussion on https://groups.google.com/forum/# !topic/linux.kernel/Ek-cxxUYfZw Google Groups, a patch to support this functionality has been implemented by Intel but never included in the mainstream kernel.
• According to this : https://lists.yoctoproject.org/pipermail/linux-yocto/2016-July/005741.html https://lists.yoctoproject.org/pipermail/linux-yocto/2016-July/005741.html the same patch has been implemented into Yocto.

So my question are :

- is the main USB port on the Compute Stick mapped to the USB Dual Role capable port ( port 1 ) ?

- Can I achieve switching to device mode under Linux without applying the patch ?

- If I was to apply this patch, what would be the procedure to switch to device mode ?

- Is switching to device mode supported in Yocto ? What's the procedure ?

[CarlosAM_INTEL]

Hello, YannickGouez :

Thank you for contacting Intel Embedded Community.

In order to be on the same page, could you please confirm that this thread is related to the https://www.intel.com/content/www/us/en/products/boards-kits/compute-stick/stk2m3w64cc.html Intel(R) Compute Stick STK2m3W64CC [ https://ark.intel.com/products/88198/Intel-Core-m3-6Y30-Processor-4M-Cache-up-to-2_20-GHz Intel(R) Core(TM) m3-6Y30 Processor]? By the way, could you please let us know the Operating System (OS) related to this situation and its version?

Waiting for your reply.

Best regards,

Carlos_A.

[YGoue]

I confirm this is related to https://www.intel.com/content/www/us/en/products/boards-kits/compute-stick/stk2m3w64cc.html STK2m3W64CC.

As I stated I am working on a 4.9.9 Linux OS. I know this configuration is not supported.

[CarlosAM_INTEL]

Hello, YannickGouez:

Thanks for your reply.

Based on your previous communication, we suggest you address your Intel Compute Stick questions to the https://communities.intel.com/community/tech/compute-stick Intel® Compute Stick Community because this type of devices is non-embedded. They are out of our scope of support.

We hope that this information may help you.

Best regards,

Carlos_A.

[YGoue]

Isn't the Core m3 an embedded processor ? I am not expecting specific support but trying to understand the way it has been implemented and if nobody can help me in this community I doubt anybody could in the compute stick community...

[CarlosAM_INTEL]

Hello, YannickGouez :

Thanks for your update.

We would like to help you but the https://www.intel.com/content/www/us/en/products/processors/core/m3-processors/m3-6y30.html Intel(R) Core(TM) M3-6Y30 Processor consultations should be addressed to the https://communities.intel.com/community/tech/processors Intel Processors Community because it is a non-embedded device.

We hope that this information may help you.

Best regards,

Carlos_A.