Re: I2C/IIC working on RPI4 8GB?
Daniel Braniss <[email protected]>
| Newsgroups | gmane.os.freebsd.devel.arm |
|---|---|
| Message-ID | <[email protected]> |
> On 26 Apr 2021, at 17:06, Emmanuel Vadot <[email protected]> wrote: > > On Sun, 25 Apr 2021 18:41:31 +0300 > Daniel Braniss <[email protected] <mailto:[email protected]>> wrote: > >> >> >>> On 25 Apr 2021, at 15:32, Mark Murray <[email protected]> wrote: >>> >>> Hi All, >>> >>> Does anyone here have IIC/I2C working on a CURRENT (I'm running latest) FreeBSD? >>> >>> I've never seen it work; Last time I had working IIC was on an RPI3. >>> >>> There is a /dev/iic0, and I have a known working RTC on it, but the scan just times out: >>> >>> [root@grasshopper ~]# i2c -s >>> Hardware may not support START/STOP scanning; trying less-reliable read method. >>> <TIMEOUT> >>> Scanning I2C devices on /dev/iic0: <none found> >>> >>> >>> I suspect something not-quite-right in DTS land, but I lack the knowledge to investigate. I've done some random stumbling around in the dark with overlays and the like, but I've either seen the above error, or a total lack of /dev/iic0. >>> >>> Thanks! >>> >>> M >>> -- >>> Mark R V Murray >>> >> >> Q1: do you see /dev/iic? >> Q2: i2c -s shows anything? >> >> fianlly, you can try my patch, it works for me, but I understand it?s a five kilo hammer :-) > > RPI doesn't uses twsi so that will not change a thing. vey true should read Subject: before answering! I guess not all i2c/iic are born equal:-) danny _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-arm To unsubscribe, send any mail to "[email protected]"