gpu: nvgpu: Add DT support for TPC_PG_POWERGATE

Added support for TPC_PG_POWERGATE during probe for nvgpu via DT.
A new DT binding GV11B_FUSE_OPT_TPC_DISABLE is supported by nvgpu
driver that checks for valid masks and updates the global tpc_pg_mask
flag.

Bug 200518434

Change-Id: Ia65ae518b48e36d28de5e9375bc994232f6a9438
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/2117783
Reviewed-by: svc-mobile-coverity <svc-mobile-coverity@nvidia.com>
Reviewed-by: Deepak Goyal <dgoyal@nvidia.com>
Reviewed-by: Bibek Basu <bbasu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/os/linux/platform_gk20a.h b/drivers/gpu/nvgpu/os/linux/platform_gk20a.h
index 1331c941..2ddadd2e 100644
--- a/drivers/gpu/nvgpu/os/linux/platform_gk20a.h
+++ b/drivers/gpu/nvgpu/os/linux/platform_gk20a.h
@@ -196,6 +196,9 @@ struct gk20a_platform {
         /* Pre callback is called before frequency change */
         void (*prescale)(struct device *dev);
 
+        /* Set TPC_PG during probe */
+        void (*set_tpc_pg_mask)(struct device *dev, u32 tpc_mask);
+
         /* Devfreq governor name. If scaling is enabled, we request
          * this governor to be used in scaling */
         const char *devfreq_governor;