Adding a custom device definition to the device tree using 2.9.1 sdk

I am using SDK 2.9.1. I wanted to follow this tutorial:

https://academy.nordicsemi.com/courses/nrf-connect-sdk-intermediate/lessons/lesson-7-device-driver-model/topic/exercise-1-13/

But it says it isn't done for 2.7 or later, so can you please point me to a good tutorial on how to make a custom DTS driver that is based on another device?

Basically I want to implement this device using SPI on the nRF54L15:

https://www.ti.com/product/CC110L

I would love to do it using the device tree editor.

One of the steps in adding a custom node is to add the device and a list of existing categories and devices comes up. Seems like a waste to have all these cool GUI tools and not be able to use them just because my device isn't listed.

How would I go about making the files needed to add the CC110L to the list of devices that comes up when I try to add one in the device tree editor?

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