gpu: nvgpu: keep sec2 idle

sec2 falcon reset after secure boot complete
to keep sec2 idle

issue: ELPG does not engage if PG engine is
dependent on sec2 idleness

JIRA DNVGPU-71

Change-Id: If264c610dae857ae9b9f9bc77c59f24f239ce1ce
Signed-off-by: Mahantesh Kumbar <mkumbar@nvidia.com>
Reviewed-on: http://git-master/r/1247290
(cherry-picked from commit de2337de1211e4167993982e50237fe1115053a1)
Reviewed-on: http://git-master/r/1267260
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User

1 files changed, 10 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/gp106/acr_gp106.c b/drivers/gpu/nvgpu/gp106/acr_gp106.c
index b883ad83..5ed6300c 100644
--- a/drivers/gpu/nvgpu/gp106/acr_gp106.c
+++ b/drivers/gpu/nvgpu/gp106/acr_gp106.c
@@ -22,7 +22,8 @@
 #include "gk20a/gk20a.h"
 #include "gk20a/pmu_gk20a.h"
 #include "gk20a/semaphore_gk20a.h"
-#include "gm20b/hw_pwr_gm20b.h"
+#include "gp106/hw_psec_gp106.h"
+#include "gp106/hw_pwr_gp106.h"
 #include "gm206/acr_gm206.h"
 #include "gm20b/acr_gm20b.h"
 #include "gm206/pmu_gm206.h"
@@ -1150,6 +1151,14 @@ static int gp106_bootstrap_hs_flcn(struct gk20a *g)
                 err = status;
                 goto err_free_ucode_map;
         }
+
+        /* sec2 reset - to keep it idle */
+        gk20a_writel(g, psec_falcon_engine_r(),
+                pwr_falcon_engine_reset_true_f());
+        udelay(10);
+        gk20a_writel(g, psec_falcon_engine_r(),
+                pwr_falcon_engine_reset_false_f());
+
         return 0;
 err_free_ucode_map:
         gk20a_gmmu_unmap_free(vm, &acr->acr_ucode);