Date: Sun, 25 Apr 2021 13:32:00 +0100 From: Mark Murray <markm@FreeBSD.org> To: freebsd-arm <freebsd-arm@freebsd.org> Subject: I2C/IIC working on RPI4 8GB? Message-ID: <1C2DD11C-B1F6-4C2A-9AB0-5F1553520FF5@FreeBSD.org>
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--Apple-Mail=_E2E29890-79B3-4CCB-9110-CF30B253D3C0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii 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 --Apple-Mail=_E2E29890-79B3-4CCB-9110-CF30B253D3C0 Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename=signature.asc Content-Type: application/pgp-signature; name=signature.asc Content-Description: Message signed with OpenPGP -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.2 Comment: GPGTools - http://gpgtools.org iQEzBAEBCgAdFiEEyzPHvybPbOpU9MCxQlsJDh9CUqAFAmCFYUAACgkQQlsJDh9C UqDCNwf9EQYceMnDNrbVQYwPdXazEYnXbTW2VdN875+qlAPPJz/F8ThNuVqJysY5 T7lzPGm91wl1vl6IzPTkMOWTHfNnw2qy5ZP+u01+7j/VkURiPwtDKa6njmoXpk3v u6uoyi58t9mHe2Tl7p6KR+Y4aJpyCUTp4fVgXql/TahhMOidf2JiVmBOu56vxNp8 ZTKzz+VPhFniZkonUDY/xaCbFh1XIcfTo1OsuIYPaGZbyZjRxLkG4xwTooj6xpjL Ype8A2jMYmiQ90RbEXlwf6i+bnXc2JhfTL7jNhXLulimLYIoKvJE7sqPMPtaaaPr 9XVNtzUjZi1Ne5oTSCaaLzjkXF4TcQ== =wliW -----END PGP SIGNATURE----- --Apple-Mail=_E2E29890-79B3-4CCB-9110-CF30B253D3C0--
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