These parts were mainly for compute workloads, but they have a display that was available for the console. These chips should support SG display, but I don't know that the support was ever validated on Linux so disable it by default. It can still be enabled by setting sg_display=1 for those that want to play with it. These systems also generally had large carve outs so SG display was less of a factor.
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3356 Signed-off-by: Alex Deucher <alexander.deuc...@amd.com> --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) 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 7616d7a509b9..84fdfb4c8bd0 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -1886,7 +1886,11 @@ static int amdgpu_dm_init(struct amdgpu_device *adev) else init_data.flags.gpu_vm_support = (amdgpu_sg_display != 0); } else { - init_data.flags.gpu_vm_support = (amdgpu_sg_display != 0) && (adev->flags & AMD_IS_APU); + if (amdgpu_ip_version(adev, DCE_HWIP, 0) == IP_VERSION(2, 0, 3)) + init_data.flags.gpu_vm_support = (amdgpu_sg_display == 1); + else + init_data.flags.gpu_vm_support = + (amdgpu_sg_display != 0) && (adev->flags & AMD_IS_APU); } adev->mode_info.gpu_vm_support = init_data.flags.gpu_vm_support; -- 2.46.2
