From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Fri, 16 Apr 2021 19:49:29 +0000 (+0100)
Subject: jtag utils, send tms before tck
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=0eb75ea62a5f20e1824f9a25daefda9ff0340e53;p=soc.git

jtag utils, send tms before tck
---

diff --git a/src/soc/debug/jtagutils.py b/src/soc/debug/jtagutils.py
index 7f77558f..a642bd1f 100644
--- a/src/soc/debug/jtagutils.py
+++ b/src/soc/debug/jtagutils.py
@@ -22,9 +22,10 @@ def client_sync(dut):
 
 def tms_state_set(dut, bits):
     for bit in bits:
-        yield dut.cbus.tck.eq(1)
         yield dut.cbus.tms.eq(bit)
         yield from client_sync(dut)
+        yield dut.cbus.tck.eq(1)
+        yield from client_sync(dut)
         yield
         yield dut.cbus.tck.eq(0)
         yield from client_sync(dut)