drivers/gpu/drm/amd/display/dc/gpio/dcn42

AMD DCN 4.2 Display GPIO Helpers

A small piece of plumbing inside AMD's Display Core code that handles GPIO pin access for the DCN 4.2 generation of display hardware found in newer Radeon GPUs and Ryzen APUs. It supports things like DDC/I2C lines and hot-plug detect signals on the display controller, and is compiled into the main amdgpu graphics driver.

not-a-driver conf=1.00 deploy=none replacement=none subsystem=gpu category=not-a-driver

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recommendation

This is not actually a driver directory; it is an internal subfolder of the AMD Display Core (DC) code that provides GPIO helper routines specific to the DCN 4.2 display block used by recent Radeon and Ryzen integrated graphics. It builds as part of the larger amdgpu driver rather than as a standalone module.

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codex reasoning notes (technical)

Not a driver directory: internal AMD DCN4.2 display GPIO helper subdirectory within amdgpu/display, not a kernel-bound hardware driver entrypoint.