diff options
author | Eric Huang <JinHuiEric.Huang@amd.com> | 2018-03-29 11:49:51 -0400 |
---|---|---|
committer | Alex Deucher <alexander.deucher@amd.com> | 2018-04-03 13:08:44 -0500 |
commit | 46bce67f62e7daa00ad908c4c17e9750df2acf52 (patch) | |
tree | b89202e67a6b5de78cba5a94707b9374ba051b91 /drivers/gpu/drm/amd | |
parent | 5d41535c5d66b0a9ad2b7d5d1a72025cbca13ed2 (diff) | |
download | linux-46bce67f62e7daa00ad908c4c17e9750df2acf52.tar.gz linux-46bce67f62e7daa00ad908c4c17e9750df2acf52.tar.bz2 linux-46bce67f62e7daa00ad908c4c17e9750df2acf52.zip |
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>
Diffstat (limited to 'drivers/gpu/drm/amd')
-rw-r--r-- | drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c index 2b0c366d6149..add90675fd2a 100644 --- a/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c +++ b/drivers/gpu/drm/amd/powerplay/hwmgr/smu7_hwmgr.c @@ -3374,7 +3374,8 @@ static int smu7_get_gpu_power(struct pp_hwmgr *hwmgr, "Failed to start pm status log!", return -1); - msleep_interruptible(20); + /* Sampling period from 50ms to 4sec */ + msleep_interruptible(200); PP_ASSERT_WITH_CODE(!smum_send_msg_to_smc(hwmgr, PPSMC_MSG_PmStatusLogSample), |