arm64: dts: exynos: Add initial support for Samsung Galaxy A21s (SM-A217F)

Add initial support for the Samsung Galaxy A21s (a21s) phone. It was
launched in 2020, and it's based on the Exynos 850 SoC. It has multiple
RAM configurations: 3GB, 4GB and 6GB.

Since our bootloader does not set up memory nodes beforehand, default to
the 3GB variant. Custom bootloaders can be used to initialise other
nodes per RAM configuration.

The Exynos DPU clocks required by simple-framebuffer are not kept
enabled during boot. Add the DECON, DMA, DPP, PPMU and SSMU DPU clocks
to the simple-framebuffer node so simpledrm maintains references to
them. Without these clocks, the framebuffer fails to remain operational
further into boot.

This device tree adds support for the following:

- SimpleFB
- Buttons
- 3GB RAM
- Ramoops
- GPU
- MMC
- USB
- Watchdog

Signed-off-by: Thomas Turner <tturner@lineageos.org>
Link: https://patch.msgid.link/20260916205522.159393-3-tturner@lineageos.org
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>

0 files changed, 0 insertions, 0 deletions