gpu: nvgpu: gpu: read effective frequence from counter

(1) modified counters debug code to export to the driver
(2) modified arbiter to read from those functions
(3) modified counter for higher accuracy on MHz range

JIRA DNVGPU-164

Change-Id: I2bbf7c9be4dc59718d1d91c53028a39020b5aea5
Signed-off-by: David Nieto <dmartineznie@nvidia.com>
Reviewed-on: http://git-master/r/1239467
GVS: Gerrit_Virtual_Submit
Reviewed-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/1268008

1 files changed, 4 insertions, 3 deletions

diff --git a/drivers/gpu/nvgpu/gp106/clk_gp106.h b/drivers/gpu/nvgpu/gp106/clk_gp106.h
index a50819aa..7df4b974 100644
--- a/drivers/gpu/nvgpu/gp106/clk_gp106.h
+++ b/drivers/gpu/nvgpu/gp106/clk_gp106.h
@@ -26,9 +26,9 @@
 #define CLK_DEFAULT_CNTRL_SETTLE_RETRIES 10
 #define CLK_DEFAULT_CNTRL_SETTLE_USECS   5
 
-#define XTAL_CNTR_CLKS          2700    /* 100usec at 27KHz XTAL */
-#define XTAL_CNTR_DELAY         110     /* leave 10 extra usec   */
-#define XTAL_SCALE_TO_KHZ       10
+#define XTAL_CNTR_CLKS          27000   /* 1000usec at 27KHz XTAL */
+#define XTAL_CNTR_DELAY         1000    /* we need acuracy up to the ms   */
+#define XTAL_SCALE_TO_KHZ       1
 
 
 
@@ -47,6 +47,7 @@ struct namemap_cfg {
                         /* Todo */
                 } pll;
         };
+        u32 scale;
         char name[24];
 };