From 0d07b189787617a8f2d62e0d2c67573b590a36ff Mon Sep 17 00:00:00 2001
From: Dmytro Laktyushkin <dmytro.laktyushkin@amd.com>
Date: Mon, 21 Sep 2026 15:16:25 -0400
Subject: [PATCH] drm/amd/display: Enable dcn42 pstate pmo

Set a flag to enable pstate pmo, we want to always allow pstate
support on dcn42

Partial application: DCN42B resource constructor only.

Fixes: 6352e6027307 ("drm/amd/display: Enable dcn42 pstate pmo")
Signed-off-by: Dmytro Laktyushkin <dmytro.laktyushkin@amd.com>
Signed-off-by: Fangzhi Zuo <jerry.zuo@amd.com>
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
 .../gpu/drm/amd/display/dc/resource/dcn42b/dcn42b_resource.c    | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/resource/dcn42b/dcn42b_resource.c b/drivers/gpu/drm/amd/display/dc/resource/dcn42b/dcn42b_resource.c
index de3bd23f4736..e111e7532383 100644
--- a/drivers/gpu/drm/amd/display/dc/resource/dcn42b/dcn42b_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/resource/dcn42b/dcn42b_resource.c
@@ -2433,6 +2433,8 @@ static bool dcn42b_resource_construct(
 	/* SPL */
 	dc->caps.scl_caps.sharpener_support = true;
 
+	dc->dml2_options.pmo.force_mandatory_uclk_pstate_support = true;
+
 	return true;
 
 create_fail: