diff --git a/drivers/gpu/drm/radeon/si_dpm.c b/drivers/gpu/drm/radeon/si_dpm.c
index 32e354b..2367600 100644
--- a/drivers/gpu/drm/radeon/si_dpm.c
+++ b/drivers/gpu/drm/radeon/si_dpm.c
@@ -2958,6 +2958,15 @@ static void si_apply_state_adjust_rules(struct radeon_device *rdev,
 							&max_mclk_vddci);
 	btc_get_max_clock_from_voltage_dependency_table(&rdev->pm.dpm.dyn_state.vddc_dependency_on_mclk,
 							&max_mclk_vddc);
+/* adjust these values to see if you can find a stable combination */
+#define TESTING_MAX_SCLK 108000 /* 1080 Mhz */
+#define TESTING_MAX_MCLK 120000 /* 1200 Mhz */
+
+	/* further limit sclk and mclk here */
+	if (max_sclk_vddc > TESTING_MAX_SCLK)
+		max_sclk_vddc = TESTING_MAX_SCLK;
+	if (max_mclk_vddc > TESTING_MAX_MCLK)
+		max_mclk_vddc = TESTING_MAX_MCLK;
 
 	for (i = 0; i < ps->performance_level_count; i++) {
 		if (max_sclk_vddc) {