drm/amd/powerply: fix power reading on Fiji
authorEric Huang <JinHuiEric.Huang@amd.com>
Thu, 29 Mar 2018 15:49:51 +0000 (11:49 -0400)
committerAlex Deucher <alexander.deucher@amd.com>
Tue, 3 Apr 2018 18:08:44 +0000 (13:08 -0500)
commit46bce67f62e7daa00ad908c4c17e9750df2acf52
treeb89202e67a6b5de78cba5a94707b9374ba051b91
parent5d41535c5d66b0a9ad2b7d5d1a72025cbca13ed2
drm/amd/powerply: fix power reading on Fiji

Power value is wrong reported by customer. It is a regression by

commit a7c7bc4c0c47eaac77b8fa92f0672032df7f4254
Author: Rex Zhu <Rex.Zhu@amd.com>
Date:   Mon Mar 27 15:32:59 2017 +0800

    drm/amd/powerplay: reduce sample period time

    for power readings.

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
The theoretical sampling period is from 50ms to 4sec, original 2sec
is long but correct, and 20ms is too short. change it to more
reasonable 200ms.

Signed-off-by: Eric Huang <JinHuiEric.Huang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c