Re: [PATCH] drm/amd/display: Prevent OTG shutdown during PSR SU

2022-09-28 Thread Leo Li
On 2022-09-28 09:52, Harry Wentland wrote: On 2022-09-27 19:13, sunpeng...@amd.com wrote: From: Leo Li [Why] Enabling Z10 optimizations allows DMUB to disable the OTG during PSR link-off. This theoretically saves power by putting more of the display hardware to sleep. However, we

Re: [PATCH] drm/amd/display: Prevent OTG shutdown during PSR SU

2022-09-28 Thread Harry Wentland
On 2022-09-27 19:13, sunpeng...@amd.com wrote: > From: Leo Li > > [Why] > > Enabling Z10 optimizations allows DMUB to disable the OTG during PSR > link-off. This theoretically saves power by putting more of the display > hardware to sleep. However, we observe that with PSR SU, it causes >

Re: [PATCH] drm/amd/display: Prevent OTG shutdown during PSR SU

2022-09-28 Thread August Wikerfors
Hi Leo, On 2022-09-28 01:13, sunpeng...@amd.com wrote: From: Leo Li [Why] Enabling Z10 optimizations allows DMUB to disable the OTG during PSR link-off. This theoretically saves power by putting more of the display hardware to sleep. However, we observe that with PSR SU, it causes visual

Re: [PATCH] drm/amd/display: Prevent OTG shutdown during PSR SU

2022-09-28 Thread Thorsten Leemhuis
On 28.09.22 01:13, sunpeng...@amd.com wrote: > From: Leo Li > > [Why] > > Enabling Z10 optimizations allows DMUB to disable the OTG during PSR > link-off. This theoretically saves power by putting more of the display > hardware to sleep. However, we observe that with PSR SU, it causes > visual

[PATCH] drm/amd/display: Prevent OTG shutdown during PSR SU

2022-09-27 Thread sunpeng.li
From: Leo Li [Why] Enabling Z10 optimizations allows DMUB to disable the OTG during PSR link-off. This theoretically saves power by putting more of the display hardware to sleep. However, we observe that with PSR SU, it causes visual artifacts, higher power usage, and potential system hang.