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-rw-r--r--driver/tcpm/rt1718s.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/driver/tcpm/rt1718s.c b/driver/tcpm/rt1718s.c
index 3d4303a8b7..e8ee85368a 100644
--- a/driver/tcpm/rt1718s.c
+++ b/driver/tcpm/rt1718s.c
@@ -7,6 +7,7 @@
* RT1718S TCPC Driver
*/
+#include "battery.h"
#include "console.h"
#include "driver/tcpm/rt1718s.h"
#include "driver/tcpm/tcpci.h"
@@ -261,6 +262,11 @@ static int rt1718s_init(int port)
{
static bool need_sw_reset = true;
+ /* Do not reset the TCPC when device is no battery connected, otherwise
+ * the SINK GPIO to the PPC may be reset, and cause a brown-out.
+ */
+ need_sw_reset &= battery_is_present() == BP_YES;
+
if (!system_jumped_late() && need_sw_reset) {
RETURN_ERROR(rt1718s_sw_reset(port));
need_sw_reset = false;