Date: Sun, 25 Nov 2018 02:31:09 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-arm@FreeBSD.org Subject: [Bug 233489] SPI on the Raspberry Pi 3 is not working Message-ID: <bug-233489-7@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=233489 Bug ID: 233489 Summary: SPI on the Raspberry Pi 3 is not working Product: Base System Version: CURRENT Hardware: arm64 OS: Any Status: New Severity: Affects Many People Priority: --- Component: arm Assignee: freebsd-arm@FreeBSD.org Reporter: vince.bsd@hightek.org Created attachment 199531 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=199531&action=edit device tree Hi. We are trying to gain userland access to SPI on the raspberry PI 3 on FreeBSD 12 and FreeBSD 13.0-CURRENT. When we load the spigen.ko kernel module, it successfully loads but no spigen devices appear in /dev. There is a dtb file in the rpi boot partition, bcm2710-rpi-3-b.dtb, and we confirmed it is being loaded. SPI is enabled in config.txt with the line, "dtparam=audio=on,i2c_arm=on,spi=on". sysctl output shows dev.gpio.0.pin.11.function: alt0 dev.gpio.0.pin.10.function: alt0 dev.gpio.0.pin.9.function: alt0 alt0 is correct for SPI according to the Broadcom manual. Yet no /dev/spigen0.n appear with the spigen.ko module loaded. To confirm, we set spi=off in config.txt, for testing, and rebooted and those three pins changed to dev.gpio.0.pin.11.function: input dev.gpio.0.pin.10.function: input dev.gpio.0.pin.9.function: input I have attached the device tree with SPI enabled as output by "ofwdump -a". We also tested with the latest snapshot for FreeBSD 13 as of 11/20/2018. BTW, i2c seems to work fine except that setting the speed via sysctl does not work. -- You are receiving this mail because: You are the assignee for the bug.help
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