Quectel BG95 RPi CM4 Option driver rebuild: addition

[xanderwasserman]

Hi, great guide for the Quectel BG95 linux driver for a RPi4! I have a small addition to suggest:

I followed this guide using a the following setup:

• Device: Raspberry Pi CM4
• OS: RaspberryPi OS 64-bit
• Kernel: 5.15.32-v8+
• Modem: Quectel BG95-M3

I noticed a few differences that you might want to add to your guide. I believe that these steps would be the same/similar for a Pi4 running the 64-bit OS.

In Step 4:

• Sub-step 2:

Raspberry Pi 4 CM4 default build configuration:

$ cd linux
$ KERNEL=kernel8
$ make bcm2711_defconfig

• Sub-step 3:
  Where you build and install the kernel, modules, and Device Tree blobs, the top make -j4 zImage modules dtbs command does not work on a RPi4 running the 64-bit RaspberryPi OS (Change zImage to Image). arm in these commands must also be relaced by arm64.
  Here are the updated commands:

$ make -j4 Image modules dtbs
$ make modules_install
$ cp arch/arm64/boot/dts/*.dtb /boot/
$ cp arch/arm64/boot/dts/overlays/*.dtb* /boot/overlays/
$ cp arch/arm64/boot/dts/overlays/README /boot/overlays/
$ cp arch/arm64/boot/Image /boot/$KERNEL.img

Hope this helps someone.

Regards,
Alexander

Reference: https://forums.raspberrypi.com/viewtopic.php?t=290354

[rcrouthamel]

Thanks Alexander. Will add your input shortly! Best, Rob

[rcrouthamel]

Fixed in 9306b97894a0aec9ec09203a2c39b5c55ea1b980