This is a note to let you know that I've just added the patch titled
drm/amd/amdgpu: disable ASPM in some situations
to the 6.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amd-amdgpu-disable-aspm-in-some-situations.patch
and it can be found in the queue-6.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From [email protected] Wed Apr 1 02:42:32
>2026
From: Rosen Penev <[email protected]>
Date: Tue, 31 Mar 2026 17:39:00 -0700
Subject: drm/amd/amdgpu: disable ASPM in some situations
To: [email protected]
Cc: "Alex Deucher" <[email protected]>, "Christian König"
<[email protected]>, "Xinhui Pan" <[email protected]>, "David Airlie"
<[email protected]>, "Simona Vetter" <[email protected]>, "Harry Wentland"
<[email protected]>, "Leo Li" <[email protected]>, "Rodrigo Siqueira"
<[email protected]>, "Ray Wu" <[email protected]>, "Wayne Lin"
<[email protected]>, "Mario Limonciello" <[email protected]>, "Roman
Li" <[email protected]>, "Eric Yang" <[email protected]>, "Tony Cheng"
<[email protected]>, "Mauro Rossi" <[email protected]>, "Timur Kristóf"
<[email protected]>, "Alex Hung" <[email protected]>,
[email protected] (open list:RADEON and AMDGPU DRM DRIVERS),
[email protected] (open list:DRM DRIVERS),
[email protected] (open list)
Message-ID: <[email protected]>
From: Kenneth Feng <[email protected]>
[ Upstream commit c770ef19673fb1defcbde2ee2b91c3c89bfcf164 ]
disable ASPM with some ASICs on some specific platforms.
required from PCIe controller owner.
Signed-off-by: Kenneth Feng <[email protected]>
Reviewed-by: Yang Wang <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Signed-off-by: Rosen Penev <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 32 +++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -84,6 +84,7 @@
#if IS_ENABLED(CONFIG_X86)
#include <asm/intel-family.h>
+#include <asm/cpu_device_id.h>
#endif
MODULE_FIRMWARE("amdgpu/vega10_gpu_info.bin");
@@ -1758,6 +1759,35 @@ static bool amdgpu_device_pcie_dynamic_s
return true;
}
+static bool amdgpu_device_aspm_support_quirk(struct amdgpu_device *adev)
+{
+#if IS_ENABLED(CONFIG_X86)
+ struct cpuinfo_x86 *c = &cpu_data(0);
+
+ if (!(amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(12, 0, 0) ||
+ amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(12, 0, 1)))
+ return false;
+
+ if (c->x86 == 6 &&
+ adev->pm.pcie_gen_mask & CAIL_PCIE_LINK_SPEED_SUPPORT_GEN5) {
+ switch (c->x86_model) {
+ case VFM_MODEL(INTEL_ALDERLAKE):
+ case VFM_MODEL(INTEL_ALDERLAKE_L):
+ case VFM_MODEL(INTEL_RAPTORLAKE):
+ case VFM_MODEL(INTEL_RAPTORLAKE_P):
+ case VFM_MODEL(INTEL_RAPTORLAKE_S):
+ return true;
+ default:
+ return false;
+ }
+ } else {
+ return false;
+ }
+#else
+ return false;
+#endif
+}
+
/**
* amdgpu_device_should_use_aspm - check if the device should program ASPM
*
@@ -1782,6 +1812,8 @@ bool amdgpu_device_should_use_aspm(struc
}
if (adev->flags & AMD_IS_APU)
return false;
+ if (amdgpu_device_aspm_support_quirk(adev))
+ return false;
return pcie_aspm_enabled(adev->pdev);
}
Patches currently in stable-queue which might be from [email protected] are
queue-6.12/drm-amd-amdgpu-decouple-aspm-with-pcie-dpm.patch
queue-6.12/drm-amd-display-reject-modes-with-too-high-pixel-clock-on-dce6-10.patch
queue-6.12/drm-amd-display-fix-dce-6.0-and-6.4-pll-programming.patch
queue-6.12/drm-amd-display-disable-scaling-on-dce6-for-now.patch
queue-6.12/drm-amd-display-disable-fastboot-on-dce-6-too.patch
queue-6.12/drm-amd-display-correct-logic-check-error-for-fastboot.patch
queue-6.12/drm-amd-amdgpu-disable-aspm-in-some-situations.patch
queue-6.12/drm-amd-display-keep-pll0-running-on-dce-6.0-and-6.4.patch
queue-6.12/drm-amd-display-adjust-dce-8-10-clock-don-t-overclock-by-15.patch
queue-6.12/drm-amd-disable-aspm-on-si.patch
