diff options
| -rw-r--r-- | ecp5/bitstream.cc | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/ecp5/bitstream.cc b/ecp5/bitstream.cc index c2218762..9a925d63 100644 --- a/ecp5/bitstream.cc +++ b/ecp5/bitstream.cc @@ -185,6 +185,8 @@ void write_bitstream(Context *ctx, std::string base_config_file, std::string tex } // Find bank voltages std::unordered_map<int, IOVoltage> bankVcc; + std::unordered_map<int, bool> bankLvds; + for (auto &cell : ctx->cells) { CellInfo *ci = cell.second.get(); if (ci->bel != BelId() && ci->type == ctx->id("TRELLIS_IO")) { @@ -201,6 +203,8 @@ void write_bitstream(Context *ctx, std::string base_config_file, std::string tex } else { bankVcc[bank] = vcc; } + if (iotype == "LVDS") + bankLvds[bank] = true; } } @@ -211,6 +215,10 @@ void write_bitstream(Context *ctx, std::string base_config_file, std::string tex int bank = std::stoi(type.substr(7)); if (bankVcc.find(bank) != bankVcc.end()) cc.tiles[tile.first].add_enum("BANK.VCCIO", iovoltage_to_str(bankVcc[bank])); + if (bankLvds[bank]) { + cc.tiles[tile.first].add_enum("BANK.DIFF_REF", "ON"); + cc.tiles[tile.first].add_enum("BANK.LVDSO", "ON"); + } } } |