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| author | Mario Limonciello <mario.limonciello@amd.com> | 2024-12-10 20:44:14 -0600 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-12-18 15:20:06 -0500 |
| commit | a7f9d98eb1202132014ba760c26ad8608ffc9caf (patch) | |
| tree | 9448b78b0b2d47eb3decfd11c5f83c6a89a35125 | |
| parent | 85230ee36d88e7a09fb062d43203035659dd10a5 (diff) | |
| download | lwn-a7f9d98eb1202132014ba760c26ad8608ffc9caf.tar.gz lwn-a7f9d98eb1202132014ba760c26ad8608ffc9caf.zip | |
drm/amd: Update strapping for NBIO 2.5.0
This helps to avoid a spurious PME event on hotplug to Azalia.
Cc: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Reported-and-tested-by: ionut_n2001@yahoo.com
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=215884
Tested-by: Gabriel Marcano <gabemarcano@yahoo.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://lore.kernel.org/r/20241211024414.7840-1-mario.limonciello@amd.com
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 3f6f237b9dd189e1fb85b8a3f7c97a8f27c1e49a)
Cc: stable@vger.kernel.org
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/nbio_v7_0.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_0.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_0.c index b1b57dcc5a73..49e953f86ced 100644 --- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_0.c +++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_0.c @@ -271,8 +271,19 @@ const struct nbio_hdp_flush_reg nbio_v7_0_hdp_flush_reg = { .ref_and_mask_sdma1 = GPU_HDP_FLUSH_DONE__SDMA1_MASK, }; +#define regRCC_DEV0_EPF6_STRAP4 0xd304 +#define regRCC_DEV0_EPF6_STRAP4_BASE_IDX 5 + static void nbio_v7_0_init_registers(struct amdgpu_device *adev) { + uint32_t data; + + switch (adev->ip_versions[NBIO_HWIP][0]) { + case IP_VERSION(2, 5, 0): + data = RREG32_SOC15(NBIO, 0, regRCC_DEV0_EPF6_STRAP4) & ~BIT(23); + WREG32_SOC15(NBIO, 0, regRCC_DEV0_EPF6_STRAP4, data); + break; + } } #define MMIO_REG_HOLE_OFFSET (0x80000 - PAGE_SIZE) |