From: Alex Deucher Date: Fri, 4 Oct 2024 13:34:24 +0000 (-0400) Subject: drm/amd/display: disable SG displays on cyan skillfish X-Git-Tag: v6.12.5~196 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=61fda5faad77df569ab847c4c8a5dddb4bd3991e;p=thirdparty%2Fkernel%2Fstable.git drm/amd/display: disable SG displays on cyan skillfish [ Upstream commit 66369db7fdd7d58d78673bf83d2b87ea623efb63 ] 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 Reviewed-by: Harry Wentland Signed-off-by: Alex Deucher Signed-off-by: Sasha Levin --- 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 24fbde7dd1c42..8c3db8346f300 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -1910,7 +1910,11 @@ 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;