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ecp5: Working on LVDS inputs for Versa support

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Signed-off-by: David Shah <davey1576@gmail.com>
This commit is contained in:
David Shah 2018-07-24 21:25:33 +02:00
parent a08b71c676
commit 6a7f3cd336
1 changed files with 8 additions and 0 deletions
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8
ecp5/bitstream.cc
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@ -185,6 +185,8 @@ void write_bitstream(Context *ctx, std::string base_config_file, std::string tex
} }
// Find bank voltages // Find bank voltages
std::unordered_map<int, IOVoltage> bankVcc; std::unordered_map<int, IOVoltage> bankVcc;
std::unordered_map<int, bool> bankLvds;
for (auto &cell : ctx->cells) { for (auto &cell : ctx->cells) {
CellInfo *ci = cell.second.get(); CellInfo *ci = cell.second.get();
if (ci->bel != BelId() && ci->type == ctx->id("TRELLIS_IO")) { 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 { } else {
bankVcc[bank] = vcc; 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)); int bank = std::stoi(type.substr(7));
if (bankVcc.find(bank) != bankVcc.end()) if (bankVcc.find(bank) != bankVcc.end())
cc.tiles[tile.first].add_enum("BANK.VCCIO", iovoltage_to_str(bankVcc[bank])); 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");
}
} }
} }