[PATCHv2 for 6.12 09/10] drm/amd: Disable ASPM on SI

Rosen Penev
2026-04-01T00:39:45Z

[ Upstream commit 7bdd91abf0cb3ea78160e2e78fb58b12f6a38d55 ]

Enabling ASPM causes randoms hangs on Tahiti and Oland on Zen4.
It's unclear if this is a platform-specific or GPU-specific issue.
Disable ASPM on SI for the time being.

Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
index eb3c6bfe2e6c..12d7e45a4245 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
@@ -1761,6 +1761,13 @@ static bool amdgpu_device_pcie_dynamic_switching_supported(struct amdgpu_device

static bool amdgpu_device_aspm_support_quirk(struct amdgpu_device *adev)
{
+ /* Enabling ASPM causes randoms hangs on Tahiti and Oland on Zen4.
+ * It's unclear if this is a platform-specific or GPU-specific issue.
+ * Disable ASPM on SI for the time being.
+ */
+ if (adev->family == AMDGPU_FAMILY_SI)
+ return true;
+
#if IS_ENABLED(CONFIG_X86)
struct cpuinfo_x86 *c = &cpu_data(0);

--
2.53.0