From 31bc64e87f5f3d9ccbb7e625d570cfd8f52c77fc Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 23 Apr 2026 12:29:03 -0400 Subject: drm/amd/display: properly handle family setting for early GC 11.5.4 Early variants need an override. Fixes: 57d00816c6a9 ("drm/amdgpu: set family for GC 11.5.4") Cc: Pratik Vishwakarma Cc: Roman Li Cc: Mario Limonciello Reviewed-by: Mario Limonciello (AMD) Tested-by: Mario Limonciello (AMD) Signed-off-by: Alex Deucher (cherry picked from commit 922fccc2d3f8186008c19ba08a49ae8a9463cb50) --- drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c | 4 +--- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 6 +++++- 2 files changed, 6 insertions(+), 4 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c index fcad7daaa41b..8d99bfaa498f 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_discovery.c @@ -3090,10 +3090,8 @@ int amdgpu_discovery_set_ip_blocks(struct amdgpu_device *adev) case IP_VERSION(11, 5, 1): case IP_VERSION(11, 5, 2): case IP_VERSION(11, 5, 3): - adev->family = AMDGPU_FAMILY_GC_11_5_0; - break; case IP_VERSION(11, 5, 4): - adev->family = AMDGPU_FAMILY_GC_11_5_4; + adev->family = AMDGPU_FAMILY_GC_11_5_0; break; case IP_VERSION(12, 0, 0): case IP_VERSION(12, 0, 1): diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index e96a12ff2d31..f8f9953565f6 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -1903,7 +1903,11 @@ static int amdgpu_dm_init(struct amdgpu_device *adev) goto error; } - init_data.asic_id.chip_family = adev->family; + /* special handling for early revisions of GC 11.5.4 */ + if (amdgpu_ip_version(adev, GC_HWIP, 0) == IP_VERSION(11, 5, 4)) + init_data.asic_id.chip_family = AMDGPU_FAMILY_GC_11_5_4; + else + init_data.asic_id.chip_family = adev->family; init_data.asic_id.pci_revision_id = adev->pdev->revision; init_data.asic_id.hw_internal_rev = adev->external_rev_id; -- cgit v1.2.3