diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/jtag/zy1000/zy1000.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/jtag/zy1000/zy1000.c b/src/jtag/zy1000/zy1000.c index e66a8b5a..9070f2e3 100644 --- a/src/jtag/zy1000/zy1000.c +++ b/src/jtag/zy1000/zy1000.c @@ -132,6 +132,13 @@ static int zy1000_power_dropout(int *dropout) void zy1000_reset(int trst, int srst) { LOG_DEBUG("zy1000 trst=%d, srst=%d", trst, srst); + + /* flush the JTAG FIFO. Not flushing the queue before messing with + * reset has such interesting bugs as causing hard to reproduce + * RCLK bugs as RCLK will stop responding when TRST is asserted + */ + waitIdle(); + if (!srst) { ZY1000_POKE(ZY1000_JTAG_BASE + 0x14, 0x00000001); @@ -156,7 +163,6 @@ void zy1000_reset(int trst, int srst) if (trst||(srst && (jtag_get_reset_config() & RESET_SRST_PULLS_TRST))) { - waitIdle(); /* we're now in the RESET state until trst is deasserted */ ZY1000_POKE(ZY1000_JTAG_BASE + 0x20, TAP_RESET); } else |