From 5cc7b0cbe19ae9b02e3c778b5d2f9cb75b9d9eb4 Mon Sep 17 00:00:00 2001
From: Eric Brombaugh <ebrombaugh1@cox.net>
Date: Mon, 8 Aug 2022 12:17:56 -0700
Subject: [PATCH] Guarantee at least 2 cycles of o_rst after PLL locked.

---
 servant/ice40_pll.v | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/servant/ice40_pll.v b/servant/ice40_pll.v
index 8daad94..2e82d96 100644
--- a/servant/ice40_pll.v
+++ b/servant/ice40_pll.v
@@ -11,8 +11,8 @@ module ice40_pll
 
    reg [1:0] rst_reg;
    always @(posedge o_clk)
-     rst_reg <= {!locked, rst_reg[1]};
-   assign o_rst = rst_reg[0];
+     rst_reg <= {rst_reg[0],locked};
+   assign o_rst = ~rst_reg[1];
 
    generate
       if (PLL == "ICE40_CORE") begin