Hello !
In my project I need use 2 spi bus : /dev/spidev1.0 and /dev/spi2.0
/dev/spidev1.0 for 3.5inch rpi display
and
/dev/spidev2.0 for 8x8 led matrices, such as MAX7219-8x32-MCU-Drive-LED
If I am use legacy kernel (3.4.113-sun7i) both spi buses work well
But if use mainline kernel (4.14.18-sunxi), I can use only 1 spi bus
This is my armbianEnv.txt:
overlays=spi-spidev spi1 spi2
param_spidev_spi_bus=1
In this case I can use /dev/spidev1.0
If I set
param_spidev_spi_bus=2
I can use /dev/spidev2.0
How to enable 2 spi buses at the same time ?
