dvi_in_out

module dvi_in_out
(
  input clk_25mhz,
  input [6:0] btn,
  output [7:0] led,
  output [3:0] gpdi_dp, gpdi_dn,
  input [27:0] gp,
  output wifi_gpio0
);

parameter C_ddr = 1'b1; // 0:SDR 1:DDR

// wifi_gpio0=1 keeps board from rebooting
// hold btn0 to let ESP32 take control over the board
assign wifi_gpio0 = btn[0];

assign gpdi_dp[2:0] = gp[11:9];

OLVDS OLVDS_clock (.A(clk_recovery), .Z(gpdi_dp[3]) /*,.ZN(gpdi_dn[3]) */);
// clock generator

wire clk_recovery;
clk_25_25        
clock_instance
(
  .clki(gp[12]),
  .clko(clk_recovery) 
);

reg [23:0] blink;
always @(posedge clk_recovery)
  blink <= blink+1;

assign led[0] = blink[23];

endmodule

Thanks, that's stunningly simple and I'm surprised that you don't need to synchronize the outputs on the way out.

Well yes, we still need to see what will happen once we add more logic to it.

I also have tested this on envox addon board - that is using same logic -- just forwarding LVDS signals

https://twitter.com/GMahovlic/status/1234523139914313730