[AxxzyWasTaken]

erikwb's T8132 change lets a port that hasn't seen a cable yet runtime-suspend, with runtime PM held by the glue until the first core probe. On the M4 Max (T6041, apple,t6040-dwc3 ports), idle runtime PM already applies once a core has probed. But a port that's never been plugged reports runtime PM as unsupported and keeps its ATCn_USB domain on. On a laptop that's most ports, most of the time. This takes the same path on T6041.

Tested on a J616C (M4 Max): with nothing plugged in, all three Type-C controllers show runtime_status suspended. Running daily since 23 Oct (7.2.10 J616C tree); applies to integration/aurora unchanged.

[RyanTheTide]

Merge train (MTL, 06/11). Gates passed on test tree 0412501 (integration/aurora 2661d71 + this batch):

• Signed-off-by from the author on every commit. Adversarial review done.
• W=1 on the touched objects: 0 new warnings. KUnit: drm/apple 112/113 (1 skip), hid 19/19, SEP 158/163 (the 4 known apple_sep_host_store failures, profile tests all pass). dt_binding_check clean. apple-dcp host selftests 86/86, run-host-tests at base parity (with Merge train: G17 hang confinement (#928) plus its host-test fixture #989's fixture).
• Regression boots of 7.3.0-aurora-mtl1106a, compared with the fleet16/fleet17 rows: M2, M1 Pro, J700 and J616s all clean (0 err-level lines, 0 AVCs, displays, Wi-Fi, BT, Touch ID, camera, speakers at minimal volume with speakerguardd, s2idle, perf at parity).
• T6041-only paths: we have no J616C, so the gate is review plus your J616C evidence and regression boots of the other Macs (no change on T6040/T8140/T600x/T8112).