From 84a76b9deac363ac5f248801c10df6b9d9cb6c60 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen Date: Tue, 29 Nov 2016 15:43:04 +0100 Subject: [PATCH] imageon: Invert HDMI TX clock The ADV7511 samples the parallel data bus at the rising edge of sample clock. Generate the clock so that the falling edge is aligned to updating the bus data. This creates larger timing margins on each side of the sampling edge and makes the design more robust. Signed-off-by: Lars-Peter Clausen --- projects/imageon/common/imageon_bd.tcl | 1 + 1 file changed, 1 insertion(+) diff --git a/projects/imageon/common/imageon_bd.tcl b/projects/imageon/common/imageon_bd.tcl index 033ea609f..4c0caa36c 100644 --- a/projects/imageon/common/imageon_bd.tcl +++ b/projects/imageon/common/imageon_bd.tcl @@ -14,6 +14,7 @@ delete_bd_objs [get_bd_ports hdmi_data_e] delete_bd_objs [get_bd_ports hdmi_data] set_property CONFIG.EMBEDDED_SYNC {1} [get_bd_cells axi_hdmi_core] +set_property CONFIG.OUT_CLK_POLARITY {1} [get_bd_cells axi_hdmi_core] create_bd_port -dir O hdmi_tx_clk create_bd_port -dir O -from 15 -to 0 hdmi_tx_data