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spmi: apple: Support generation-4 interrupts and FIFO recovery - #245
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DjDeveloperr wants to merge 1 commit into
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Use the matched interrupt register banks on T6050 and T8142. Recover failed transactions through the generation-4 queue control registers, with bounded draining and restoration of the inherited enable state. Keep generation-1 flushing and the existing polling interval. Signed-off-by: Dj <hey@djdev.me>
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Add the generation-4 SPMI interrupt banks and T6050 match without replacing the newer public transaction handling. Recovery drains at most 512 replies, resets the command queue when needed, restores the inherited controller enable state, and leaves a failed transaction poisoned until recovery succeeds. Generation-1 FIFO flushing and the existing 10 us polling interval are preserved.
Validate the mapped register aperture before installing the chained interrupt handler. The host test exercises the production recovery function for an empty queue, a stuck response FIFO, a reset timeout and a successful reset.
Validation: native arm64 driver object build, recovery host test, binding validation and whitespace checks passed. Hardware interrupt/recovery qualification remains pending. No GPU changes.
Stacked on #244 to keep the non-GPU support series together; SPMI itself does not call APIF.