Commit 7013a826 authored by Vijendar Mukunda's avatar Vijendar Mukunda Committed by Alex Deucher
Browse files

drm/amd: Fix initialization mistake for NBIO 7.7.0 



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: default avatarMario Limonciello <mario.limonciello@amd.com>
Signed-off-by: default avatarVijendar Mukunda <Vijendar.Mukunda@amd.com>
Signed-off-by: default avatarMario Limonciello <mario.limonciello@amd.com>
Acked-by: default avatarAlex Deucher <alexander.deucher@amd.com>
Link: https://lore.kernel.org/r/20241112161142.28974-1-mario.limonciello@amd.com


Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 447a54a0)
Cc: stable@vger.kernel.org
parent 5f77ee21

drivers/gpu/drm/amd/amdgpu/nbio_v7_7.c

+6 −0
Original line number Diff line number Diff line
@@ -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,