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drm/amd: Fix initialization mistake for NBIO 7.11 devices

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commit 349af06a3abd0bb3787ee2daf3ac508412fe8dcc upstream.

There is a strapping issue on NBIO 7.11.x that can lead to spurious PME
events while in the D0 state.

Cc: stable@vger.kernel.org
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://lore.kernel.org/r/20241118174611.10700-2-mario.limonciello@amd.com
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Mario Limonciello
2024-11-18 11:46:11 -06:00
committed by Greg Kroah-Hartman
parent e5483137d1
commit 6209e4178a
1 changed files with 9 additions and 0 deletions
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drivers/gpu/drm/amd/amdgpu/nbio_v7_11.c
+9
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@@ -275,6 +275,15 @@ static void nbio_v7_11_init_registers(struct amdgpu_device *adev)
if (def != data)
WREG32_SOC15(NBIO, 0, regBIF_BIF256_CI256_RC3X4_USB4_PCIE_MST_CTRL_3, data);
switch (adev->ip_versions[NBIO_HWIP][0]) {
case IP_VERSION(7, 11, 0):
case IP_VERSION(7, 11, 1):
case IP_VERSION(7, 11, 2):
case IP_VERSION(7, 11, 3):
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_11_update_medium_grain_clock_gating(struct amdgpu_device *adev,