gpu: nvgpu: support to parse VF table

JIRA DNVGPU-123

function was added to retrieve V for F or
F for V for a given clock domain.
Clock domain can be master or slave.
F or V can be intermediate point between two
successive V or F values in VF table.
VF table should be cached before calling this function.
A F value below Fmin will return Vmin.
F > Fmax will return error
A V value above Vmax wil return F max.
A V value below Vmin will return error.

Change-Id: I28b4e8647510c6933e9e1204cfff31d74616e11a
Signed-off-by: Vijayakumar <vsubbu@nvidia.com>
Reviewed-on: http://git-master/r/1211234
(cherry-picked from commit 5b83b03f2454fbec8d49a064ed09b09c92d3e9fa)
Reviewed-on: http://git-master/r/1235054
Reviewed-by: Thomas Fleury <tfleury@nvidia.com>
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/clk/clk.h b/drivers/gpu/nvgpu/clk/clk.h
index e24aada2..0d12ba7d 100644
--- a/drivers/gpu/nvgpu/clk/clk.h
+++ b/drivers/gpu/nvgpu/clk/clk.h
@@ -84,5 +84,13 @@ struct vbios_clocks_table_1x_hal_clock_entry {
 
 u32 clk_pmu_vf_inject(struct gk20a *g);
 u32 clk_pmu_vin_load(struct gk20a *g);
+u32 clk_domain_print_vf_table(struct gk20a *g, u32 clkapidomain);
+u32 clk_domain_get_f_or_v
+(
+        struct gk20a *g,
+        u32 clkapidomain,
+        u16 *pclkmhz,
+        u32 *pvoltuv
+);
 
 #endif