6627 2014-08-12 21:00:48 +0000 Minnowboard Max fails to load the SPI device 2019-04-04 14:33:01 +0000 1 1 7 Build System, Metadata & Runtime BSPs bsps-meta-intel 1.6.1 MinnowBoard Max x86_64 RESOLVED WONTFIX Medium normal Future 1 bryan unassigned dvhart sjolley.yp.pm tom.zanussi warthog9 --- --- Don't know oldest_to_newest 45098 0 bryan 2014-08-12 21:00:48 +0000 Upon boot two spi modules are loaded but no SPI device is found at /dev/spidev.* spi_pxa2xx_pci 2317 0 spi_pxa2xx_platform 15607 0 When I manually rmmod spi-pxa2xx-pci then reload it I get the following error: [ 597.682946] pxa2xx_spi_pci: probe of 0000:00:1e.5 failed with error -17 I'm using the core-image-sato-intel-corei7-64.hddimg image from the link below http://downloads.yoctoproject.org/releases/yocto/yocto-1.6.1/machines/intel-corei7-64/intel-corei7-64-1.0-daisy-1.6.1.tar.bz2 45099 1 warthog9 2014-08-12 21:33:30 +0000 Fixing the filing status 45100 2 dvhart 2014-08-12 21:46:54 +0000 The pxa2xx_spi* driver is for the master bus device, the bus should show up under: /sys/class/spi_master/spi0 spidev devices are typically enumerated via boardfiles, or a firmware description, such as Device Tree or ACPI _DSD (new this month). For example boardfiles, see: https://github.com/MinnowBoard/minnow-max-extras/blob/master/modules/calamari/calamari.c And for a spidev boardfile see: https://github.com/MinnowBoard/minnow-max-extras/blob/master/modules/low-speed-spidev/low-speed-spidev.c All that said, the error you reported should not occur when configured in PCI mode with the SPI device enabled in firmware. We need to attempt to reproduce with the image you provided. 45101 3 dvhart 2014-08-12 22:39:54 +0000 Using the image from the opening comment, with the firmware configured in PCI mode, with SPI enabled: root@intel-corei7-64:~# lspci | grep SPI 00:1e.5 Serial bus controller [0c80]: Intel Corporation ValleyView LPIO1 SPI Controller (rev 0c) root@intel-corei7-64:~# uname -r 3.14.4-yocto-standard root@intel-corei7-64:~# lsmod | grep pxa spi_pxa2xx_pci 2317 0 spi_pxa2xx_platform 15607 0 root@intel-corei7-64:~# ls /sys/class/spi_master/ spi0 Everything is working as expected on boot. However, if I unload the to modules listed above and attempt to load the pci alone: root@intel-corei7-64:~# modprobe spi_pxa2xx_pci [ 218.128831] pxa2xx_spi_pci: probe of 0000:00:1e.5 failed with error -17 (The driver should probably attempt to request the platform driver) But if I first load the platform driver: root@intel-corei7-64:~# modprobe spi_pxa2xx_platform root@intel-corei7-64:~# modprobe spi_pxa2xx_pci root@intel-corei7-64:~# lsmod | grep pxa spi_pxa2xx_platform 15607 0 spi_pxa2xx_pci 2317 0 It loads as expected. Unfortunately, the spi master doesn't appear under /sys/class/spi_master/. While these work on first boot, unloading and reloading doesn't work. I suspect this is a bug. Next step would be to determine if this also fails on mainline, and then either do a backport or provide a fix there and then backport. 83436 4 sjolley.yp.pm 2019-04-04 14:33:01 +0000 No longer driving fixes for Minnowboard Max.