root@oc:~# uname -a
Linux oc.local 4.4.154-88-rockchip-00030-g90239a6 #2 SMP Tue Jul 2 18:35:23 CST 2019 aarch64 aarch64 aarch64 GNU/Linux
root@oc:~# mount /dev/nvme0n1p4 /mnt
root@oc:~# cat /mnt/hw_intfc.conf|grep spi
intfc:spi1=on
intfc:spi2=on
# Dummy spi device on SPI1 for test. Need set: intfc:spi1=on
#intfc:dtoverlay=devspi1
# Dummy spi device on SPI2 for test. Need set: intfc:spi2=on
#intfc:dtoverlay=devspi2
# waveshare 3.5inch lcd (B v2) on SPI1. Need set: intfc:uart4=off intfc:spi1=on
#intfc:dtoverlay=spi1-waveshare35b-v2
# waveshare 3.5inch lcd (C) on SPI1. Need set: intfc:uart4=off intfc:spi1=on
#intfc:dtoverlay=spi1-waveshare35c
# spi flash on SPI1. Need set: intfc:uart4=off intfc:spi1=on
intfc:dtoverlay=spi1-flash