![Sonoff NSPanel Pro 120: Linux Display Subsystem [Part 2]](/content/images/size/w600/2025/02/wayland-screenshot-2025-02-20_11-09-58-1.png)
sonoff
In the previous article, we found out what the DSS (Display Subsystem) consists of and its terminology. We also have a .dts reference file from the factory firmware, so we are ready to define our peripheral in the DTS and finally make the screen work. Let’s create a new
sonoff
So, assuming we’ve already synced the RK3326 Linux SDK and are familiar with how Linux is booted, in this article, let’s compile a new Linux firmware and upload it to the device. The Rockchip Linux SDK provides three rootfs options: Buildroot , Debian , and Yocto . I’ll choose Buildroot
![Sonoff NSPanel Pro 120: Linux Display Subsystem [Part 1]](/content/images/size/w600/2025/02/photo_2025-02-18_11-32-23-1.jpg)
sonoff
The first thing we would like to get working in our fresh Linux build is, of course, the LCD screen, as it is essential for running any kind of desktop environment. The graphics stack on Linux can be a bit complicated. The following diagram illustrates the full relationship between the
sonoff
In this article, let's extract the device tree (.dts) file from the backup. A Device Tree is a data structure that provides a way to describe the hardware components of a system in a hierarchical manner. It allows the Linux kernel to understand the hardware layout without hardcoding
itead
In the previous article, we already got the partitions read out. Now it's time to make a backup and save it so that whatever we do, we can at least revert all the changes. rkdeveloptool Options: We will use the rkdeveloptool rl command to read all the sectors.
sonoff
In the past, I worked in the smart home industry and was always dissatisfied with touchscreen wall panels, as they had limited functionality and weren't customizable at all. As time passed, more options entered the market; however, they are still locked into the manufacturer's ecosystem and