There is no reason why the sun20i-ppu cannot be built as a module. So change it to tristate. Also enable it by default for ARCH_SUNXI since this driver is required for some peripherals to work, and update the help text to reflect this requirement. This aligns it with the new PCK-600 driver. Signed-off-by: Chen-Yu Tsai <wens@csie.org> Link: https://lore.kernel.org/r/20250712074021.805953-5-wens@kernel.org Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>