Date: Sat, 5 Jan 2019 12:56:34 +0100 From: Per Hedeland <per@hedeland.org> To: freebsd-arm@freebsd.org Subject: i2c on RPi Zero? Message-ID: <229e0d36-a07b-8551-9613-0bf5748352e7@hedeland.org>
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Hi, Is i2c expected to work on Raspberry Pi Zero? I have FreeBSD running just fine on it from FreeBSD-12.0-RELEASE-arm-armv6-RPI-B.img, but there is no mention of iic at boot (dmesg), and no /dev/iic* - while on a Pi B with FreeBSD-11.0-STABLE-arm-armv6-RPI-B-20170105-r311441.img (sorry about the different versions) I see: iichb0: <BCM2708/2835 BSC controller> mem 0x205000-0x20501f on simplebus0 iicbus0: <OFW I2C bus> on iichb0 iic0: <I2C generic I/O> on iicbus0 iichb1: <BCM2708/2835 BSC controller> mem 0x804000-0x80401f on simplebus0 iicbus1: <OFW I2C bus> on iichb1 iic1: <I2C generic I/O> on iicbus1 Also "What works" on https://wiki.freebsd.org/FreeBSD/arm/Raspberry%20Pi has just an ominous question mark for i2c on Zero...:-) Any hints for debugging/testing would be appreciated. Thanks --Per Hedeland
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