diff options
| author | Takashi Iwai <tiwai@suse.de> | 2023-07-18 14:24:49 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2023-07-18 14:24:56 +0200 |
| commit | 21634f0f307c8401462da2cd07507880ee17d3fc (patch) | |
| tree | 8dd1b41a5a1bd9fe9a340814c4101f33df827f40 /drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | |
| parent | 6d68d9cba1d0d1ee628a783eb9e7d38a0c3691b8 (diff) | |
| parent | 2218e10e6fec05f76d6cd2c7eed4cb5af447360b (diff) | |
Merge branch 'topic/hda-pci-ids' into for-next
Pull cleanup of HD-audio PCI IDs.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_device.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c index a92c6189b4b6..a2cdde0ca0a7 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c @@ -1458,6 +1458,25 @@ bool amdgpu_device_need_post(struct amdgpu_device *adev) return true; } +/* + * Intel hosts such as Raptor Lake and Sapphire Rapids don't support dynamic + * speed switching. Until we have confirmation from Intel that a specific host + * supports it, it's safer that we keep it disabled for all. + * + * 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/ + * https://gitlab.freedesktop.org/drm/amd/-/issues/2663 + */ +bool amdgpu_device_pcie_dynamic_switching_supported(void) +{ +#if IS_ENABLED(CONFIG_X86) + struct cpuinfo_x86 *c = &cpu_data(0); + + if (c->x86_vendor == X86_VENDOR_INTEL) + return false; +#endif + return true; +} + /** * amdgpu_device_should_use_aspm - check if the device should program ASPM * |