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Only COMPILE_TEST builds reach PM=n, and there the driver still binds and probe reads RKISP1_CIF_VI_ID with the clocks off. Nicolas asked to close the PM=n case per driver [1]; rkcif already depends on PM. If you'd rather leave COMPILE_TEST-only configs alone, I'll drop it. [1] https://lore.kernel.org/r/8aafdbbf04a0d939c6b4d7d5577d97bb58d1c439.camel@collabora.com