From 65dae8ff4c7d5dde1016d1736c6740a0f80e68e3 Mon Sep 17 00:00:00 2001
From: Daniel Miess <daniel.miess@amd.com>
Date: Wed, 14 Jun 2023 13:09:14 -0400
Subject: [PATCH] drm/amd/display: disable power gating for DCN314
[Why]
Power gating is causing error messages on some DCN314 systems
[How]
Force disable power gating for DCN314
Fixes: 4cc1cebe08bf ("drm/amd/display: Re-enable DPP/HUBP Power Gating")
Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Daniel Miess <daniel.miess@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
.../gpu/drm/amd/display/dc/dcn314/dcn314_resource.c | 12 +++++-------
1 file changed, 5 insertions(+), 7 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_resource.c b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_resource.c
index a840b008d6603..ef49b4d7742f7 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn314/dcn314_resource.c
@@ -1883,13 +1883,6 @@ static bool dcn314_resource_construct(
/* Use pipe context based otg sync logic */
dc->config.use_pipe_ctx_sync_logic = true;
- /* Disable pipe power gating when unsupported */
- if (ctx->asic_id.hw_internal_rev == 0x01 ||
- ctx->asic_id.hw_internal_rev == 0x80) {
- dc->debug.disable_dpp_power_gate = true;
- dc->debug.disable_hubp_power_gate = true;
- }
-
/* read VBIOS LTTPR caps */
{
if (ctx->dc_bios->funcs->get_lttpr_caps) {
@@ -1910,6 +1903,11 @@ static bool dcn314_resource_construct(
dc->debug = debug_defaults_drv;
else
dc->debug = debug_defaults_diags;
+
+ /* Disable pipe power gating */
+ dc->debug.disable_dpp_power_gate = true;
+ dc->debug.disable_hubp_power_gate = true;
+
// Init the vm_helper
if (dc->vm_helper)
vm_helper_init(dc->vm_helper, 16);
--
GitLab