[PATCH 1/2] Revert "drm/amd/pm: Disable MCLK switching on SI at high pixel clocks"

From: Rosen Penev

Date: Fri Feb 20 2026 - 22:44:31 EST


This reverts commit d033e8cf4e8f6395102cdbc3cb00dc7cb9542f53.

Cc: Timur Kristóf <timur.kristof@xxxxxxxxx>
Cc: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Rosen Penev <rosenp@xxxxxxxxx>
---
drivers/gpu/drm/amd/pm/legacy-dpm/si_dpm.c | 5 -----
1 file changed, 5 deletions(-)

diff --git a/drivers/gpu/drm/amd/pm/legacy-dpm/si_dpm.c b/drivers/gpu/drm/amd/pm/legacy-dpm/si_dpm.c
index 29cecfab0704..05eaa06dfa34 100644
--- a/drivers/gpu/drm/amd/pm/legacy-dpm/si_dpm.c
+++ b/drivers/gpu/drm/amd/pm/legacy-dpm/si_dpm.c
@@ -3486,11 +3486,6 @@ static void si_apply_state_adjust_rules(struct amdgpu_device *adev,
* for these GPUs to calculate bandwidth requirements.
*/
if (high_pixelclock_count) {
- /* Work around flickering lines at the bottom edge
- * of the screen when using a single 4K 60Hz monitor.
- */
- disable_mclk_switching = true;
-
/* On Oland, we observe some flickering when two 4K 60Hz
* displays are connected, possibly because voltage is too low.
* Raise the voltage by requiring a higher SCLK.
--
2.53.0