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Tue, 31 Mar 2026 17:39:44 -0700 (PDT) From: Rosen Penev To: stable@vger.kernel.org Cc: Alex Deucher , =?UTF-8?q?Christian=20K=C3=B6nig?= , Xinhui Pan , David Airlie , Simona Vetter , Harry Wentland , Leo Li , Rodrigo Siqueira , Ray Wu , Wayne Lin , Mario Limonciello , Roman Li , Eric Yang , Tony Cheng , Mauro Rossi , =?UTF-8?q?Timur=20Krist=C3=B3f?= , Alex Hung , amd-gfx@lists.freedesktop.org (open list:RADEON and AMDGPU DRM DRIVERS), dri-devel@lists.freedesktop.org (open list:DRM DRIVERS), linux-kernel@vger.kernel.org (open list) Subject: [PATCHv2 for 6.12 09/10] drm/amd: Disable ASPM on SI Date: Tue, 31 Mar 2026 17:39:07 -0700 Message-ID: <20260401003908.3438-10-rosenp@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260401003908.3438-1-rosenp@gmail.com> References: <20260401003908.3438-1-rosenp@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable From: Timur Krist=C3=B3f [ 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 Signed-off-by: Timur Krist=C3=B3f Signed-off-by: Alex Deucher Signed-off-by: Rosen Penev --- 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/a= md/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_sup= ported(struct amdgpu_device =20 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 =3D=3D AMDGPU_FAMILY_SI) + return true; + #if IS_ENABLED(CONFIG_X86) struct cpuinfo_x86 *c =3D &cpu_data(0); =20 --=20 2.53.0