drm/amd/display: Disable PSR-SU on eDP panels

Tom Chung · alexdeucher · commit e8863f8b0316 · 2025-02-25T12:26:51.000-05:00
[Why] PSR-SU may cause some glitching randomly on several panels. [How] Temporarily disable the PSR-SU and fallback to PSR1 for all eDP panels. Link: https://gitlab.freedesktop.org/drm/amd/-/issues/3388 Cc: Mario Limonciello <mario.limonciello@amd.com> Cc: Alex Deucher <alexander.deucher@amd.com> Reviewed-by: Sun peng Li <sunpeng.li@amd.com> Signed-off-by: Tom Chung <chiahsuan.chung@amd.com> Signed-off-by: Roman Li <roman.li@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> (cherry picked from commit 6deeefb) Cc: stable@vger.kernel.org
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_psr.c
@@ -54,7 +54,8 @@ static bool link_supports_psrsu(struct dc_link *link)
 	if (amdgpu_dc_debug_mask & DC_DISABLE_PSR_SU)
 		return false;
 
-	return dc_dmub_check_min_version(dc->ctx->dmub_srv->dmub);
+	/* Temporarily disable PSR-SU to avoid glitches */
+	return false;
 }
 
 /*

Original file line number	Diff line number	Diff line change
`@@ -54,7 +54,8 @@ static bool link_supports_psrsu(struct dc_link *link)`
`54`	`54`	`if (amdgpu_dc_debug_mask & DC_DISABLE_PSR_SU)`
`55`	`55`	`return false;`
`56`	`56`
`57`		`- return dc_dmub_check_min_version(dc->ctx->dmub_srv->dmub);`
	`57`	`+ /* Temporarily disable PSR-SU to avoid glitches */`
	`58`	`+ return false;`
`58`	`59`	`}`
`59`	`60`
`60`	`61`	`/*`