drm/amdgpu: add common support for dimgrey_cavefish

Add external id and set clock gating for dimgrey_cavefish.

Signed-off-by: Tao Zhou <tao.zhou1@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Jiansong Chen <Jiansong.Chen@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Tao Zhou 2020-10-02 11:30:54 -04:00 • committed by Alex Deucher
commit 550c58e0fa