fix: fall back on coeff C name in RDL

* Avoid breaking compatibility...

hdl/top_corr_matrix.vhd

@@ -237,11 +237,11 @@ begin
         -- Corr coefs
         coef_a_x        => signed(mm_a2l.CORR_K1A_X.data.data),
         coef_b_x        => signed(mm_a2l.CORR_K1B_X.data.data),
-        coef_c_x        => signed(mm_a2l.CORR_K1C_X.data.data),
+        coef_c_x        => signed(mm_a2l.CORR_K1IC_X.data.data),
         coef_d_x        => signed(mm_a2l.CORR_K1D_X.data.data),
         coef_a_y        => signed(mm_a2l.CORR_K1A_Y.data.data),
         coef_b_y        => signed(mm_a2l.CORR_K1B_Y.data.data),
-        coef_c_y        => signed(mm_a2l.CORR_K1C_Y.data.data),
+        coef_c_y        => signed(mm_a2l.CORR_K1IC_Y.data.data),
         coef_d_y        => signed(mm_a2l.CORR_K1D_Y.data.data),
 
         reset_corr_x    => mm_a2l.CONTROL_X.RST_CORR.data(0),
@@ -269,11 +269,11 @@ begin
         -- Corr coefs
         coef_a_x        => signed(mm_a2l.CORR_K2A_X.data.data),
         coef_b_x        => signed(mm_a2l.CORR_K2B_X.data.data),
-        coef_c_x        => signed(mm_a2l.CORR_K2C_X.data.data),
+        coef_c_x        => signed(mm_a2l.CORR_K2IC_X.data.data),
         coef_d_x        => signed(mm_a2l.CORR_K2D_X.data.data),
         coef_a_y        => signed(mm_a2l.CORR_K2A_Y.data.data),
         coef_b_y        => signed(mm_a2l.CORR_K2B_Y.data.data),
-        coef_c_y        => signed(mm_a2l.CORR_K2C_Y.data.data),
+        coef_c_y        => signed(mm_a2l.CORR_K2IC_Y.data.data),
         coef_d_y        => signed(mm_a2l.CORR_K2D_Y.data.data),
 
         reset_corr_x    => mm_a2l.CONTROL_X.RST_CORR.data(0),

rdl/corr_matrix.rdl

@@ -67,10 +67,10 @@ addrmap corr_matrix {
     } CORR_K1B_X;
 
     reg {
-        desc="Correction coefficient C.";
+        desc="Correction coefficient (inverse) C.";
         desyrdl_data_type="int32";
         field {sw = rw; hw = r;} data[`C_W_COR_COEF];
-    } CORR_K1C_X;
+    } CORR_K1IC_X;
 
     reg {
         desc="Correction coefficient D.";
@@ -92,10 +92,10 @@ addrmap corr_matrix {
     } CORR_K2B_X;
 
     reg {
-        desc="Correction coefficient C.";
+        desc="Correction coefficient (inverse) C.";
         desyrdl_data_type="int32";
         field {sw = rw; hw = r;} data[`C_W_COR_COEF];
-    } CORR_K2C_X;
+    } CORR_K2IC_X;
 
     reg {
         desc="Correction coefficient D.";
@@ -116,10 +116,10 @@ addrmap corr_matrix {
     } CORR_K1B_Y;
 
     reg {
-        desc="Correction coefficient C.";
+        desc="Correction coefficient (inverse) C.";
         desyrdl_data_type="int32";
         field {sw = rw; hw = r;} data[`C_W_COR_COEF];
-    } CORR_K1C_Y;
+    } CORR_K1IC_Y;
 
     reg {
         desc="Correction coefficient D.";
@@ -141,10 +141,10 @@ addrmap corr_matrix {
     } CORR_K2B_Y;
 
     reg {
-        desc="Correction coefficient C.";
+        desc="Correction coefficient (inverse) C.";
         desyrdl_data_type="int32";
         field {sw = rw; hw = r;} data[`C_W_COR_COEF];
-    } CORR_K2C_Y;
+    } CORR_K2IC_Y;
 
     reg {
         desc="Correction coefficient D.";