Date: Mon, 13 Jan 2020 07:34:23 -0700 From: Warner Losh <imp@bsdimp.com> To: Wojciech Puchar <wojtek@puchar.net> Cc: FreeBSD Hackers <freebsd-hackers@freebsd.org> Subject: Re: raspberry pi zero and SLOW USB HID Message-ID: <CANCZdfrNQb1axeC%2BVDoMa--8DdtiUArLTdpjtiK%2BkRifGMRChw@mail.gmail.com> In-Reply-To: <alpine.BSF.2.20.2001131439440.2189@puchar.net> References: <alpine.BSF.2.20.2001131439440.2189@puchar.net>
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On Mon, Jan 13, 2020, 6:40 AM Wojciech Puchar <wojtek@puchar.net> wrote: > thank you for the help i already got. Raspberry pi zero run now completely > with FreeBSD including USB. > > Over this USB we connect our own hardware that looks like HID device. > Actually it's nothing like mouse or keyboard, but it's HID > device so to be able to work under windoze without requiring user to > install any drivers. > > Both raspberry pi and PC have 480Mbit/s USB. device actually works with > 12Mbit/s USB. > > my program does lots of hid_read_timeout from this device > > When running on PC it goes fast - able to perform enough reads to read all > needed data. > > When running on raspberry pi - in spite of total CPU load is far less than > 5% - it is slow. all hid_read_timeout works properly but > way too slow. every read takes like 10 times more time. > > what is needed to fix this? > I think a RPI firmware upgrade is needed. I don't know if our port has been updated yet. Warner _______________________________________________ > freebsd-hackers@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org" >
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