Move novena_clkmgr IBUFGDS to clkmgr_dcm, to put the Xilinx-specific primitives in one place.

1 files changed, 18 insertions, 1 deletions

diff --git a/common/rtl/clkmgr_dcm.v b/common/rtl/clkmgr_dcm.v
index 7c851f1..141863e 100644
--- a/common/rtl/clkmgr_dcm.v
+++ b/common/rtl/clkmgr_dcm.v
@@ -38,9 +38,11 @@
 
 module clkmgr_dcm
   (
-   input wire  clk_in,
+   input wire  clk_in_p,
+   input wire  clk_in_n,
    input wire  reset_in,
   
+   output wire gclk_out,
    output wire gclk_missing_out,
 
    output wire clk_out,
@@ -56,6 +58,20 @@ module clkmgr_dcm
    
    
    //
+   // IBUFGDS
+   //
+   /* Xilinx-specific primitive to handle LVDS input signal. */
+   (* BUFFER_TYPE="NONE" *)
+   wire        clk_in;
+   
+   IBUFGDS IBUFGDS_gclk
+     (
+      .I(clk_in_p),
+      .IB(clk_in_n),
+      .O(clk_in)
+      );
+
+   //
    // DCM_SP
    //
    /* Xilinx-specific primitive. */
@@ -115,6 +131,7 @@ module clkmgr_dcm
    //
    // Mapping
    //
+   assign       gclk_out        = clk_in;
    assign       gclk_missing_out= dcm_status_int[1];
    assign       clk_valid_out   = dcm_locked_int & ((dcm_status_int[2:1] == 2'b00) ? 1'b1 : 1'b0);