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Commit 72105dcf authored by Fudong Wang's avatar Fudong Wang Committed by Alex Deucher
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drm/amd/display: Add smu write msg id fail retry process

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: default avatarCharlene Liu <charlene.liu@amd.com>
Acked-by: default avatarHamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: default avatarFudong Wang <fudong.wang@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 05347402
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