* [PATCH AUTOSEL 4.14 23/40] drm/amd/powerplay: OD setting fix on Vega10
[not found] <20190215021313.178476-1-sashal@kernel.org>
@ 2019-02-15 2:12 ` Sasha Levin
0 siblings, 0 replies; only message in thread
From: Sasha Levin @ 2019-02-15 2:12 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Kenneth Feng, Alex Deucher, Sasha Levin, amd-gfx, dri-devel
From: Kenneth Feng <kenneth.feng@amd.com>
[ Upstream commit 6d87dc97eb3341de3f7b1efa3156cb0e014f4a96 ]
gfxclk for OD setting is limited to 1980M for non-acg
ASICs of Vega10
Signed-off-by: Kenneth Feng <kenneth.feng@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
.../powerplay/hwmgr/vega10_processpptables.c | 22 ++++++++++++++++++-
1 file changed, 21 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_processpptables.c b/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_processpptables.c
index e343df190375..05bb87a54e90 100644
--- a/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_processpptables.c
+++ b/drivers/gpu/drm/amd/powerplay/hwmgr/vega10_processpptables.c
@@ -32,6 +32,7 @@
#include "vega10_pptable.h"
#define NUM_DSPCLK_LEVELS 8
+#define VEGA10_ENGINECLOCK_HARDMAX 198000
static void set_hw_cap(struct pp_hwmgr *hwmgr, bool enable,
enum phm_platform_caps cap)
@@ -258,7 +259,26 @@ static int init_over_drive_limits(
struct pp_hwmgr *hwmgr,
const ATOM_Vega10_POWERPLAYTABLE *powerplay_table)
{
- hwmgr->platform_descriptor.overdriveLimit.engineClock =
+ const ATOM_Vega10_GFXCLK_Dependency_Table *gfxclk_dep_table =
+ (const ATOM_Vega10_GFXCLK_Dependency_Table *)
+ (((unsigned long) powerplay_table) +
+ le16_to_cpu(powerplay_table->usGfxclkDependencyTableOffset));
+ bool is_acg_enabled = false;
+ ATOM_Vega10_GFXCLK_Dependency_Record_V2 *patom_record_v2;
+
+ if (gfxclk_dep_table->ucRevId == 1) {
+ patom_record_v2 =
+ (ATOM_Vega10_GFXCLK_Dependency_Record_V2 *)gfxclk_dep_table->entries;
+ is_acg_enabled =
+ (bool)patom_record_v2[gfxclk_dep_table->ucNumEntries-1].ucACGEnable;
+ }
+
+ if (powerplay_table->ulMaxODEngineClock > VEGA10_ENGINECLOCK_HARDMAX &&
+ !is_acg_enabled)
+ hwmgr->platform_descriptor.overdriveLimit.engineClock =
+ VEGA10_ENGINECLOCK_HARDMAX;
+ else
+ hwmgr->platform_descriptor.overdriveLimit.engineClock =
le32_to_cpu(powerplay_table->ulMaxODEngineClock);
hwmgr->platform_descriptor.overdriveLimit.memoryClock =
le32_to_cpu(powerplay_table->ulMaxODMemoryClock);
--
2.19.1
^ permalink raw reply related [flat|nested] only message in thread