Hi, I've got a custom board where I need/want to use the MCSPI3 CS0, CS2 and CS3 hw lines for SPI.
When I configure and enable mcspi3 in a custom DTS for the Linux image, with I get the following message viewable with dmesg: [ 1.189920] omap2_mcspi 480b8000.spi: chipselect 0 already in use [ 1.196085] spi_master spi2: spi_device register error /ocp/spi@480b8000/channel@0 [ 1.203721] spi_master spi2: Failed to create SPI device for /ocp/spi@480b8000/channel@0 So, channel 0 seems to be conflicting with some other driver or usage. I finally figured out that the "am5729-beagleboneai.dts" file has a reference to mcspi3: &mcspi3 { status = "okay"; ti,pindir-d0-out-d1-in; sn65hvs882: sn65hvs882@0 { compatible = "pisosr-gpio"; gpio-controller; #gpio-cells = <2>; reg = <0>; spi-max-frequency = <1000000>; spi-cpol; }; }; My question is can I disable/override this usage? I don't know the system purpose of the "pisosr-gpio"/sn65hvs882 device and what the effect will be if Linux access is disabled. Since I'll have a custom device on linux spidev2.0, I don't want some other part of the system trying to access that SPI bus/channel and causing problems with my device. Thanks for any insights. Raul -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/5451426c-8c64-44df-87f5-c94eea5909e4n%40googlegroups.com.