From: Sebastien Bourdeauducq <sebastien@milkymist.org>
Date: Fri, 15 Mar 2013 09:49:18 +0000 (+0100)
Subject: CRG: support reset inversion
X-Git-Tag: 24jan2021_ls180~2099^2~443^2~56
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=37d8029848db6badb0b7de79f890abfe3ea01493;p=litex.git

CRG: support reset inversion
---

diff --git a/mibuild/crg.py b/mibuild/crg.py
index 6448ec49..131b7e62 100644
--- a/mibuild/crg.py
+++ b/mibuild/crg.py
@@ -10,7 +10,11 @@ class CRG(Module):
 		return r
 
 class SimpleCRG(CRG):
-	def __init__(self, platform, clk_name, rst_name):
+	def __init__(self, platform, clk_name, rst_name, rst_invert=False):
 			self.cd = ClockDomain("sys")
 			platform.request(clk_name, None, self.cd.clk)
-			platform.request(rst_name, None, self.cd.rst)
+			if rst_invert:
+				rst_n = platform.request(rst_name)
+				self.comb += self.cd.rst.eq(~rst_n)
+			else:
+				platform.request(rst_name, None, self.cd.rst)