From: Øyvind Harboe <oyvind.harboe@zylin.com>
Date: Mon, 18 Jan 2010 20:54:58 +0000 (+0100)
Subject: zy1000: flush jtag buffer before changing speed
X-Git-Tag: v0.4.0-rc2~73
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=924bf27596f31ab8e79fbb4de702be4a9fa12874;p=openocd

zy1000: flush jtag buffer before changing speed

It is conceivable that there could be commands in the
queue when a speed change request comes in. Flush the
hw queue before changing speed. Not observed, found by
inspection.

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
---

diff --git a/src/jtag/zy1000/zy1000.c b/src/jtag/zy1000/zy1000.c
index 9070f2e3..2c205b7a 100644
--- a/src/jtag/zy1000/zy1000.c
+++ b/src/jtag/zy1000/zy1000.c
@@ -199,6 +199,9 @@ void zy1000_reset(int trst, int srst)
 
 int zy1000_speed(int speed)
 {
+	/* flush JTAG master FIFO before setting speed */
+	waitIdle();
+
 	if (speed == 0)
 	{
 		/*0 means RCLK*/