ecp5: Add DCSC support

Signed-off-by: gatecat <gatecat@ds0.me>

1 files changed, 12 insertions, 0 deletions

diff --git a/ecp5/arch.cc b/ecp5/arch.cc
index 2c04105c..34bdfa1b 100644
--- a/ecp5/arch.cc
+++ b/ecp5/arch.cc
@@ -793,6 +793,12 @@ bool Arch::getCellDelay(const CellInfo *cell, IdString fromPort, IdString toPort
             return true;
         }
         return false;
+    } else if (cell->type == id_DCSC) {
+        if ((fromPort == id_CLK0 || fromPort == id_CLK1) && toPort == id_DCSOUT) {
+            delay = DelayQuad(0);
+            return true;
+        }
+        return false;
     } else if (cell->type == id_DP16KD) {
         return false;
     } else if (cell->type == id_MULT18X18D) {
@@ -866,6 +872,12 @@ TimingPortClass Arch::getPortTimingClass(const CellInfo *cell, IdString port, in
         if (port == id_CLKO)
             return TMG_COMB_OUTPUT;
         return TMG_IGNORE;
+    } else if (cell->type == id_DCSC) {
+        if (port == id_CLK0 || port == id_CLK1)
+            return TMG_COMB_INPUT;
+        if (port == id_DCSOUT)
+            return TMG_COMB_OUTPUT;
+        return TMG_IGNORE;
     } else if (cell->type == id_DP16KD) {
         if (port == id_CLKA || port == id_CLKB)
             return TMG_CLOCK_INPUT;