Hi+AKA-Oleksij, On Wed, 2016-07-06 at 10:38 +-0200, fixed-term.Oleksij.Rempel wrote: +AD4- +AD4- On 06.07.2016 10:32, Alexey Brodkin wrote: +AD4- +AD4- +AD4- +AD4- Hi Oleksij, +AD4- +AD4- +AD4- +AD4- On Wed, 2016-07-06 at 10:24 +-0200, fixed-term.Oleksij.Rempel wrote: +AD4- +AD4- +AD4- +AD4- +AD4- +AD4- +AKA- +AD4- +AD4- +AD4- Hm... this Endpoint should be Interrupt, not Bulk. If you search for +AD4- +AD4- +AD4- lsusb of this kind of adapter all of them list EP3 and EP4 as Interrupt. +AD4- +AD4- +AD4- +AD4- +AD4- +AD4- what did went wrong here? Is it not working in USB High Speed mode? +AD4- +AD4- Unfortunately as of now on that board EHCI doesn't work. +AD4- +AD4- +AD4- +AD4- That's not a problem of a particular USB device but something in either +AD4- +AD4- ECHI host controller or its integration. I do hope we will fix it sometime soon +AD4- +AD4- (this is a development board and USB controller is implemented in FPGA so +AD4- +AD4- there's a chance to fix stuff later on). +AD4- +AD4- +AD4- +AD4- So given only OHCI works on the board I went forward and attempted to use it +AD4- +AD4- with Wi-Fi USB dongle. +AD4- +AD4- I did some tests for 2 years on OHCI controller on x86. There was no +AD4- noticable issues. It was even a bit faster then Intels EHCI. I don't +AD4- think OHCI alone is the source of this problem. Well I was also surprised how well that dongle works with that board in OHCI mode. I saw quite consistent +AH4-4-5 Mbit/second rates when doing Speedtest from my smartphone. So IMHO it's completely usable. Especially on that kind of HW which has main CPU running at just 100MHz. +AD4- On other side, so far i know, this adapter claims to provide usb full +AD4- speed support, (Not only high speed) and may use different usb +AD4- descriptor for this. May be this is the problem. So is there something we may do with all that? -Alexey -- 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
