diff --git a/include/drivers/delay_timer.h b/include/drivers/delay_timer.h
index 684f1c3..e5044cc 100644
--- a/include/drivers/delay_timer.h
+++ b/include/drivers/delay_timer.h
@@ -1,5 +1,6 @@
 /*
- * Copyright (c) 2015-2018, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2015-2019, ARM Limited and Contributors. All rights reserved.
+ * Copyright (c) 2019, Linaro Limited
  *
  * SPDX-License-Identifier: BSD-3-Clause
  */
@@ -7,8 +8,11 @@
 #ifndef DELAY_TIMER_H
 #define DELAY_TIMER_H
 
+#include <stdbool.h>
 #include <stdint.h>
 
+#include <arch_helpers.h>
+
 /********************************************************************
  * A simple timer driver providing synchronous delay functionality.
  * The driver must be initialized with a structure that provides a
@@ -23,6 +27,25 @@
 	uint32_t clk_div;
 } timer_ops_t;
 
+static inline uint64_t timeout_cnt_us2cnt(uint32_t us)
+{
+	return ((uint64_t)us * (uint64_t)read_cntfrq_el0()) / 1000000ULL;
+}
+
+static inline uint64_t timeout_init_us(uint32_t us)
+{
+	uint64_t cnt = timeout_cnt_us2cnt(us);
+
+	cnt += read_cntfrq_el0();
+
+	return cnt;
+}
+
+static inline bool timeout_elapsed(uint64_t expire_cnt)
+{
+	return read_cntpct_el0() > expire_cnt;
+}
+
 void mdelay(uint32_t msec);
 void udelay(uint32_t usec);
 void timer_init(const timer_ops_t *ops_ptr);