[PATCH 6.12 014/460] drm/amdgpu/vcn5: Add SMU dpm interface type

Greg Kroah-Hartman
2026-03-23T14:15:20Z

6.12-stable review patch. If anyone has any objections, please let me know.

------------------

From: sguttula <suresh.guttula@amd.com>

[ Upstream commit a5fe1a54513196e4bc8f9170006057dc31e7155e ]

This will set AMDGPU_VCN_SMU_DPM_INTERFACE_* smu_type
based on soc type and fixing ring timeout issue seen
for DPM enabled case.

Signed-off-by: sguttula <suresh.guttula@amd.com>
Reviewed-by: Pratik Vishwakarma <Pratik.Vishwakarma@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit f0f23c315b38c55e8ce9484cf59b65811f350630)
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/amdgpu/vcn_v5_0_0.c | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/drivers/gpu/drm/amd/amdgpu/vcn_v5_0_0.c b/drivers/gpu/drm/amd/amdgpu/vcn_v5_0_0.c
index a359d612182dd..3aa715830fbe8 100644
--- a/drivers/gpu/drm/amd/amdgpu/vcn_v5_0_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/vcn_v5_0_0.c
@@ -166,6 +166,10 @@ static int vcn_v5_0_0_sw_init(void *handle)
fw_shared->present_flag_0 = cpu_to_le32(AMDGPU_FW_SHARED_FLAG_0_UNIFIED_QUEUE);
fw_shared->sq.is_enabled = 1;

+ fw_shared->present_flag_0 |= cpu_to_le32(AMDGPU_VCN_SMU_DPM_INTERFACE_FLAG);
+ fw_shared->smu_dpm_interface.smu_interface_type = (adev->flags & AMD_IS_APU) ?
+ AMDGPU_VCN_SMU_DPM_INTERFACE_APU : AMDGPU_VCN_SMU_DPM_INTERFACE_DGPU;
+
if (amdgpu_vcnfw_log)
amdgpu_vcn_fwlog_init(&adev->vcn.inst[i]);
}
--
2.51.0