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drm/amdgpu: add warning for GRBM 1-cycle delay issue in gfx9
authorchangzhu <Changfeng.Zhu@amd.com>
Tue, 5 Nov 2019 10:29:12 +0000 (18:29 +0800)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 4 Dec 2019 21:33:55 +0000 (22:33 +0100)
commitc56d0cc9573a8e485a56409af0c5c01ca9229461
treedce794f6a744de9714714cc222e3fe84835c3d68tree
parentbf2e5f0321247f4d6ce3f150f69f5d8bfb254066commit | diff
drm/amdgpu: add warning for GRBM 1-cycle delay issue in gfx9

[ Upstream commit 440a7a54e7ec012ec8b27c27e460dfd6f9a24ddb ]

It needs to add warning to update firmware in gfx9
in case that firmware is too old to have function to
realize dummy read in cp firmware.

Signed-off-by: changzhu <Changfeng.Zhu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c diff | blob | blame | history
Mirror https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git