[PATCH] drm/amd/pp: Fix OD feature enable failed on Vega10 workstation cards

[Rex Zhu]

As hw required, soc clock must large than mclk, So we set max soc
clock to OD Max Memory clk.
But on workstation, vbios do not support OD featur, the OD max memory
clock is equal to 0. In this case, driver can support underclocking.
and set od max memory clock to the value in highest memory dpm level.
So the od max memory clock should be less than highest soc clock.
and driver should not change the soc clock.

caused by commit ca57b9b0a156
("drm/amd/pp: Allow underclocking when od table is empty in vbios")

Signed-off-by: Rex Zhu <Rex.Zhu at amd.com>
---
 drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c b/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c
index 932ea8c..7355144 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_hwmgr.c
@@ -321,8 +321,12 @@ static int vega10_odn_initial_default_setting(struct pp_hwmgr *hwmgr)
 		odn_table->min_vddc = dep_table[0]->entries[0].vddc;
 
 	i = od_table[2]->count - 1;
-	od_table[2]->entries[i].clk = hwmgr->platform_descriptor.overdriveLimit.memoryClock;
-	od_table[2]->entries[i].vddc = odn_table->max_vddc;
+	od_table[2]->entries[i].clk = hwmgr->platform_descriptor.overdriveLimit.memoryClock > od_table[2]->entries[i].clk ?
+					hwmgr->platform_descriptor.overdriveLimit.memoryClock :
+					od_table[2]->entries[i].clk;
+	od_table[2]->entries[i].vddc = odn_table->max_vddc > od_table[2]->entries[i].vddc ?
+					odn_table->max_vddc :
+					od_table[2]->entries[i].vddc;
 
 	return 0;
 }
@@ -1325,6 +1329,7 @@ static int vega10_setup_default_dpm_tables(struct pp_hwmgr *hwmgr)
 	if (hwmgr->platform_descriptor.overdriveLimit.memoryClock == 0)
 		hwmgr->platform_descriptor.overdriveLimit.memoryClock =
 					dpm_table->dpm_levels[dpm_table->count-1].value;
+
 	vega10_init_dpm_state(&(dpm_table->dpm_state));
 
 	data->dpm_table.eclk_table.count = 0;
-- 
1.9.1