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Troubleshooting • Mousepoll values for Raspberry Pi 3 and Raspberry Pi 4

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Hello,
I would like info related to mousepoll and Pi 3 and 4.

If I check the value, I see this:

Code:

$ cat /sys/module/usbhid/parameters/mousepoll4294967295
My understanding is that this value represents the poll interval, in ms, with 0 being a special value meaning "do whatever the device wants". 0 is the default in most Linux distros. But what does 4294967295 mean?

I read that this value is implemented only for USB2. So the Raspberry Pi 3, which is using the dwc_otg driver, should use that value. Is this correct?

I checked the Raspberry Pi 4, and apparently all the 4 ports, even the black ones, are using the xhci driver, which I read are not supporting this parameter. Is this correct?

Would it be technically possible to use the dwc_otg driver on the Pi 4?

Thank you.

Statistics: Posted by luc4 — Sun Feb 04, 2024 10:33 am



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