This is the preferred and Standard way of entering USB 2. Synopsys only allow customers to download the latest versions. Once I had to allow for the possibility of a more diverse HUB-based configuration, it just seemed simpler to treat the “root port” as a “root hub. Wed Dec 11, 7: Fri Dec 13, 6:

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If you are a TI Employee and require Edit ability please contact x from the company directory. Look at what I told you before:. The first requires a simple memory access, the second involves several USB control transfers. One such use-case is for low level USB 2. Other implementations list very specific “endpoint 0” max packet sizes. Because the project I am involved in requires to use an external USB hub Cypress HX3 based for various input devices, I had the chance to observe quite a few issues with for example one or more USB keyboards and a touchscreen controller USB plugged in at the same time.

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This page has been accessed 31, times. And I’m sure several of the linhx including a generic USB 2. Retrieved from ” http: I’ll keep plugging away. What you call “root hub” is for me simply a “root port” which does not has the function of a standard USB 2.


And a modified version of the EHCI driver: However, it’s not always that we will have a functioning USB Host to issue such requests. For your implementation I think it oth not important if bMaxPacketSize0 of your software root hub is 8 or Wed Dec 11, 7: Look at what I told you before: When your “root hub” has a device descriptor so this is defined in your own software.

Nothing like replacing one bug with another. Ralink info Other usefull info: It ddc originally done for the MMC cards on different plattforms so it might not seem obvious without this:. The USB0 host port has a linx A female so no special cables needed. When you read a value of 8 I think there is a problem with the control transfer which returns this descriptor.

Those are the two instances available on AMx devices, This is the preferred and Standard way of entering USB 2.

Linuc of those directories contain the same thing, we will use Thanks and regards, Tom. It is not documented but there seems to be a bit of info aroud the net since a lots of Soc manufacturers use it. Super-Speed is not supported so maximum speed is high-speed.


But I didn’t do it because that would have been much more code. Thu Nov 28, 3: That said, I tried simply changing it to Does anyone know if that’s right. It dw too small.

usb: dwc2: add amcc,dwc-otg support [Linux ] – Linux Kernels

I have tried different hubs, input devices AND different boards all based on the RK — the problems still persist. But I am doing pretty much the same thing. Although this sounds like the end of the road in relation to these issues, I am not understanding one fundamental concept with this controller and perhaps you have some useful insights. I’m doing the following with the LAN hub: