There is a strapping issue on NBIO 7.11.x that can lead to spurious PME
events while in the D0 state.
Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/nbio_v7_11.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_11.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_11.c
index 7a9adfda5814..814ab59fdd4a 100644
--- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_11.c
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_11.c
@@ -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,
--
2.34.1
