diff options
| author | Mark Brown <[email protected]> | 2023-07-23 23:34:06 +0100 |
|---|---|---|
| committer | Mark Brown <[email protected]> | 2023-07-23 23:34:06 +0100 |
| commit | 9c214af0bd0f43df214470a35bc38dd5602b666f (patch) | |
| tree | e95ac46b8fdca90a122b73eac96158985d85ef70 /drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | |
| parent | e02a4ccbeced64aa10f4e99683c721ec43e993c1 (diff) | |
| parent | 6eaae198076080886b9e7d57f4ae06fa782f90ef (diff) | |
regmap: Merge up fixes from mainline
There's several things here that will really help my CI.
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 * |