Problems with SPI driver and spidev

asmeti · 03-12-2010, 04:30 AM

Hi All,

I am using SPI driver which is part of kernel.

They have given spidev_test file i'm trying to execute it.

mknod /dev/spidev c 153 0

./spidev_test -D /dev/spidev

Its saying device file or directory not found

Do i need spidev.ko ? Because when i compile kernel with SPI, I am not getting spidev.ko file?

what should i do ? please help me out !!!!

pixellany · 03-12-2010, 07:43 AM

I gave this a better title. Always try to use titles that are descriptive.

I'm not familiar with SPI, spidev, etc. but:

1. Does the mknod command create the node as expected?

2. Are you compiling SPI **into** the kernel, or creating it as a module?

jhwilliams · 11-11-2011, 09:08 PM

Quote:

Originally Posted by asmeti

Do i need spidev.ko ? Because when i compile kernel with SPI, I am not getting spidev.ko file?

You need CONFIG_SPIDEV set to either y or m. Regardless, you shouldn't need to mknod -- spidev registration will automatically populate the correct file descriptor. Also, the file should be something like /dev/spidevB.C, where B is the busnum and C is the chipselect (e.g. /dev/spidev0.1).