Hi folks, I'm trying to identify hardware which has both USB host and USB gadget capabilities. Unfortunately, in some cases, datasheets are unavailable, or unclear, claiming only USB host support. However, digging further, it turns out that USB gadget support is also present, if one uses a USB A Male-to-Male cable. An example of this is the RTD1295, which, according to this article (https://www.cnx-software.com/2017/03/16/how-to-reinstall-android-firmware-on-realtek-rtd1295-tv-boxes/), which shows up as a device when the Male/Male cable is connected to the USB3 port at boot time. I'm not sure whether this is implemented in the boot-loader, or at an OS level. I have looked in the kernel usb-gadget sources, trying to find any hints, but was unable to come to a conclusion. I found the Raspberry Pi gadget functionality supported under the dwc2 driver, and saw the dwc3 driver as well, with some SoC specific glue layers. I guess my question is: what should I be looking for to determine whether a chipset actually supports USB gadget? Does USB3.0 inherently support USB gadget? Or just any based on DWC3? Thanks Rogan -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
