drm/amd/display: Add smu write msg id fail retry process
commit 72105dcf upstream. A benchmark stress test (12-40 machines x 48hours) found that DCN315 has cases where DC writes to an indirect register to set the smu clock msg id, but when we go to read the same indirect register the returned msg id doesn't match with what we just set it to. So, to fix this retry the write until the register's value matches with the requested value. Cc: stable@vger.kernel.org # 6.1+ Fixes: f9490399 ("drm/amd/display: Add DCN315 CLK_MGR") Reviewed-by:Charlene Liu <charlene.liu@amd.com> Acked-by:
Hamza Mahfooz <hamza.mahfooz@amd.com> Signed-off-by:
Fudong Wang <fudong.wang@amd.com> Signed-off-by:
Alex Deucher <alexander.deucher@amd.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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