diff --git a/arch/xtensa/platforms/iss/console.c b/arch/xtensa/platforms/iss/console.c
index daee86cdf0cc90d62dcf4b16d473aba5f69a363a..3fc152292499871ceef24c4a9151fc4196eb0a00 100644
--- a/arch/xtensa/platforms/iss/console.c
+++ b/arch/xtensa/platforms/iss/console.c
@@ -33,7 +33,7 @@
 #endif
 
 #define SERIAL_MAX_NUM_LINES 1
-#define SERIAL_TIMER_VALUE (20 * HZ)
+#define SERIAL_TIMER_VALUE (HZ / 10)
 
 static struct tty_driver *serial_driver;
 static struct tty_port serial_port;