gpu: nvgpu: fix gpcclk for K4.4

Move the sw initialization of the gpcclk from gpu rail ungate path
to the nvgpu probe path. This allows gpcclk to register itself
successfully with CCF and makes it discoverable for other clients
early on during boot.

Bug 200233943
Bug 200259437

Change-Id: I88d94542092f92e68dc63c40444a70991d1f6129
Signed-off-by: Srikar Srimath Tirumala <srikars@nvidia.com>
Reviewed-on: http://git-master/r/1265549
Reviewed-by: Tejal Kudav <tkudav@nvidia.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/gk20a_sysfs.c b/drivers/gpu/nvgpu/gk20a/gk20a_sysfs.c
index 1b4d2c07..978ad5aa 100644
--- a/drivers/gpu/nvgpu/gk20a/gk20a_sysfs.c
+++ b/drivers/gpu/nvgpu/gk20a/gk20a_sysfs.c
@@ -18,12 +18,17 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <linux/version.h>
 #include <linux/device.h>
 #include <linux/pm_runtime.h>
 #include <linux/kernel.h>
 #include <linux/fb.h>
 #include <linux/gk20a.h>
+#include <mach/clk.h>
 #include <linux/clk/tegra.h>
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0))
+#include <soc/tegra/tegra-dvfs.h>
+#endif
 
 #include "gk20a.h"
 #include "gr_gk20a.h"