diff options
Diffstat (limited to 'common/recipes-kernel/linux/linux-yocto-4.14.71/5485-drm-amd-powerplay-Enable-Disable-NBPSTATE-on-On-OFF-.patch')
-rw-r--r-- | common/recipes-kernel/linux/linux-yocto-4.14.71/5485-drm-amd-powerplay-Enable-Disable-NBPSTATE-on-On-OFF-.patch | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/common/recipes-kernel/linux/linux-yocto-4.14.71/5485-drm-amd-powerplay-Enable-Disable-NBPSTATE-on-On-OFF-.patch b/common/recipes-kernel/linux/linux-yocto-4.14.71/5485-drm-amd-powerplay-Enable-Disable-NBPSTATE-on-On-OFF-.patch new file mode 100644 index 00000000..7db568e0 --- /dev/null +++ b/common/recipes-kernel/linux/linux-yocto-4.14.71/5485-drm-amd-powerplay-Enable-Disable-NBPSTATE-on-On-OFF-.patch @@ -0,0 +1,44 @@ +From af55bdc563626770696074c47acf0b5bee61447d Mon Sep 17 00:00:00 2001 +From: Akshu Agrawal <akshu.agrawal@amd.com> +Date: Mon, 24 Sep 2018 15:48:02 +0530 +Subject: [PATCH 5485/5725] drm/amd/powerplay: Enable/Disable NBPSTATE on + On/OFF of UVD + +We observe black lines (underflow) on display when playing a +4K video with UVD. On Disabling Low memory P state this issue is +not seen. +Multiple runs of power measurement shows no imapct. + +Signed-off-by: Akshu Agrawal <akshu.agrawal@amd.com> +Signed-off-by: Satyajit Sahu <satyajit.sahu@amd.com> +Acked-by: Alex Deucher <alexander.deucher@amd.com> +--- + drivers/gpu/drm/amd/powerplay/hwmgr/smu8_hwmgr.c | 5 ++++- + 1 file changed, 4 insertions(+), 1 deletion(-) + +diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/smu8_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/smu8_hwmgr.c +index 53cf787..fef111d 100644 +--- a/drivers/gpu/drm/amd/powerplay/hwmgr/smu8_hwmgr.c ++++ b/drivers/gpu/drm/amd/powerplay/hwmgr/smu8_hwmgr.c +@@ -1228,14 +1228,17 @@ static int smu8_dpm_force_dpm_level(struct pp_hwmgr *hwmgr, + + static int smu8_dpm_powerdown_uvd(struct pp_hwmgr *hwmgr) + { +- if (PP_CAP(PHM_PlatformCaps_UVDPowerGating)) ++ if (PP_CAP(PHM_PlatformCaps_UVDPowerGating)) { ++ smu8_nbdpm_pstate_enable_disable(hwmgr, true, true); + return smum_send_msg_to_smc(hwmgr, PPSMC_MSG_UVDPowerOFF); ++ } + return 0; + } + + static int smu8_dpm_powerup_uvd(struct pp_hwmgr *hwmgr) + { + if (PP_CAP(PHM_PlatformCaps_UVDPowerGating)) { ++ smu8_nbdpm_pstate_enable_disable(hwmgr, false, true); + return smum_send_msg_to_smc_with_parameter( + hwmgr, + PPSMC_MSG_UVDPowerON, +-- +2.7.4 + |