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Commit 31c7a3b3 authored by Mario Limonciello's avatar Mario Limonciello Committed by Alex Deucher
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drm/amd/pm: conditionally disable pcie lane/speed switching for SMU13

Intel platforms such as Sapphire Rapids and Raptor Lake don't support
dynamic pcie lane or speed switching.

This limitation seems to carry over from one generation to another.
To be safer, disable dynamic pcie lane width and speed switching when
running on an Intel platform.

Link: https://edc.intel.com/content/www/us/en/design/products/platforms/details/raptor-lake-s/13th-generation-core-processors-datasheet-volume-1-of-2/005/pci-express-support/
Link: https://gitlab.freedesktop.org/drm/amd/-/issues/2663


Co-developed-by: default avatarEvan Quan <evan.quan@amd.com>
Signed-off-by: default avatarEvan Quan <evan.quan@amd.com>
Signed-off-by: default avatarMario Limonciello <mario.limonciello@amd.com>
Reviewed-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.1.x
parent dcb489ba
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