Good day, I'm looking for help adding touchscreen support to the ROCKPI 4 Legacy Kernel and correct screen configuration settings. Im new to SBC development so I'm still learning the build system.
I have taken the time to track down, what I believe, are the commits to add basic support for the "Raspberry Pi 7" Touchscreen" to the kernel. I believe their will be changes needed to rootfs so that the display manager recognizes it and sets it up properly.
ARMBIAN_BUILD_BRANCH: Legacy Kernel --> https://github.com/ayufan-rock64/linux-kernel/tree/release-4.4.202
RADXA_BUILD_BRANCH: Kernel --> https://github.com/radxa/kernel/releases/tag/4.4.154-110-rockchip
MY_BUILD_BRANCH: Armbian Legacy Kernel --> https://github.com/SydeLink/linux-kernel/commits/sL-armbian-radxa
These are the commits I've cherry picked from Radxa's Kernel
97f1fae7dcaea5712ae69d239016251090242bcd //Overlay
a9e01ea73ca3a5e3e25d78cb3725ced3f3c3c8ca //Driver
29beb4f7264afcc6bb60672e06e1f8b727903eb4 //Driver
de225d96bb00b0b187f930df3c077fd172b9255f //Driver
It builds successfully. I've installed to device. It now boots to black screen. I believe its now picking up the screen but no longer knows what to output to. I remember seeing some commits to add fallback to x11 for this issue but cant remember where.
I'm pausing at this point for the evening. Hope this helps others :D
