DietPi and the Radxa Rock 4 C+ board

Device tree overlays

I wrote several scripts to install and activate device tree overlays. These scripts use (and install) two more universal scripts to /boot/dietpi:

• dietpi-add-overlay: installs a binary overlay and adds it to dietpiEnv.txt, based on armbian-add-overlay, but without using the device tree compiler (dtc) to compile device tree source files to binary overlays (what needs the installation of the dtc)
• dietpi-activate-overlay: activates overlays installed with the DietPi firmware (in /boot/dietpi/dtb/rockchip/overlay)

These are scripts to activate overlays:

• install device tree overlay for USB OTG (peripheral mode) for the upper USB 3 connector

  curl https://raw.githubusercontent.com/herrfrei/dietpi-rpk4cp/rock4cp_usb_otg.sh | bash

• Install device tree overlay for the DS3231 realtime clock:

  curl https://raw.githubusercontent.com/herrfrei/dietpi-rock4cp/rock4cp_rtc_ds3231.sh | bash

  This script also stops and deactivates the fake-hwclock service.

Other adjustments

• use rock4cp_bluetooth_fw.sh to create the (missing) link for the Bluetooth firmware:

  curl https://raw.githubusercontent.com/herrfrei/dietpi-rock4cp/rock4cp_bluetooth_fw.sh | bash

Installation of teslausb

• Install the device tree overlay for USB OTG from above (rock4cp_usb_otg.sh).

• If you want to use an emmc module for the operating system and a SD card or USB stick for the data, add a flag to the call of the installation script. This will skip the resizing of the root file system:

  https://raw.githubusercontent.com/marcone/teslausb/main-dev/setup/generic/install.sh | bash -s norootshrink

  During setup, adjust the DATA_DRIVE option in teslausb_setup_variables.conf to match your data device. Follow the instructions from the Wiki