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drm/amd: Fix initialization mistake for NBIO 7.7.0

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BugLink: https://bugs.launchpad.net/bugs/2101042

commit 7013a8268d311fded6c7a6528fc1de82668e75f6 upstream.

There is a strapping issue on NBIO 7.7.0 that can lead to spurious PME
events while in the D0 state.

Co-developed-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://lore.kernel.org/r/20241112161142.28974-1-mario.limonciello@amd.com
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 447a54a0f79c9a409ceaa17804bdd2e0206397b9)
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Manuel Diewald <manuel.diewald@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Vijendar Mukunda
2024-11-12 10:11:42 -06:00
committed by Stefan Bader
parent 0fe0cdae50
commit f5dec49b6c
1 changed files with 6 additions and 0 deletions
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drivers/gpu/drm/amd/amdgpu/nbio_v7_7.c
+6
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@@ -247,6 +247,12 @@ static void nbio_v7_7_init_registers(struct amdgpu_device *adev)
if (def != data)
WREG32_SOC15(NBIO, 0, regBIF0_PCIE_MST_CTRL_3, data);
switch (adev->ip_versions[NBIO_HWIP][0]) {
case IP_VERSION(7, 7, 0):
data = RREG32_SOC15(NBIO, 0, regRCC_DEV0_EPF5_STRAP4) & ~BIT(23);
WREG32_SOC15(NBIO, 0, regRCC_DEV0_EPF5_STRAP4, data);
break;
}
}
static void nbio_v7_7_update_medium_grain_clock_gating(struct amdgpu_device *adev,