From c847007008c1160c8e2052cc6766e3408d43cea7 Mon Sep 17 00:00:00 2001
From: dragonmux <git@dragonmux.network>
Date: Tue, 9 Aug 2022 04:38:30 +0100
Subject: [PATCH] jtagtap: Implemented clock tristating

---
 src/command.c                  | 2 ++
 src/platforms/common/jtagtap.c | 1 +
 2 files changed, 3 insertions(+)

diff --git a/src/command.c b/src/command.c
index 5bf2754..3bc126a 100644
--- a/src/command.c
+++ b/src/command.c
@@ -224,6 +224,7 @@ static bool cmd_jtag_scan(target *t, int argc, const char **argv)
 	}
 
 	if (devs == 0) {
+		platform_target_clk_output_enable(false);
 		platform_nrst_set_val(false);
 		gdb_out("JTAG device scan failed!\n");
 		return false;
@@ -319,6 +320,7 @@ bool cmd_auto_scan(target *t, int argc, const char **argv)
 		break;
 	}
 	if (devs == 0) {
+		platform_target_clk_output_enable(false);
 		platform_nrst_set_val(false);
 		gdb_out("auto scan failed!\n");
 		return false;
diff --git a/src/platforms/common/jtagtap.c b/src/platforms/common/jtagtap.c
index 2a2b13d..a947955 100644
--- a/src/platforms/common/jtagtap.c
+++ b/src/platforms/common/jtagtap.c
@@ -37,6 +37,7 @@ static void jtagtap_cycle(bool tms, bool tdi, size_t clock_cycles);
 
 int jtagtap_init()
 {
+	platform_target_clk_output_enable(true);
 	TMS_SET_MODE();
 
 	jtag_proc.jtagtap_reset = jtagtap_reset;