Update system_top.v

Add a comment that the spi CS decoding is tied to a setting in the device tree.
2020-10-28 17:01:32 -04:00 · 2020-10-28 17:01:32 -04:00 · 2ff5420630
parent 78b2ae02a1
commit 2ff5420630
1 changed files with 2 additions and 1 deletions
--- a/projects/fmcomms8/zcu102/system_top.v
+++ b/projects/fmcomms8/zcu102/system_top.v
@ -158,8 +158,9 @@ module system_top (
  wire            spi_mosi;
  wire            spi0_miso;

+  // The csn bus from the SPI controller needs to be decoded as 
+  // is-decoded-cs = <1> is set in the device tree.
  reg  [7:0]     spi_3_to_8_csn;
-
  always @(*) begin
    case (spi_csn)
      3'h0: spi_3_to_8_csn = 8'b11111110;