diff --git a/arch/sandbox/include/asm/test.h b/arch/sandbox/include/asm/test.h
index fc52f47f821..e956a05262f 100644
--- a/arch/sandbox/include/asm/test.h
+++ b/arch/sandbox/include/asm/test.h
@@ -59,14 +59,6 @@ void sandbox_i2c_eeprom_set_test_mode(struct udevice *dev,
 
 void sandbox_i2c_eeprom_set_offset_len(struct udevice *dev, int offset_len);
 
-/*
- * sandbox_timer_add_offset()
- *
- * Allow tests to add to the time reported through lib/time.c functions
- * offset: number of milliseconds to advance the system time
- */
-void sandbox_timer_add_offset(unsigned long offset);
-
 /**
  * sandbox_i2c_rtc_set_offset() - set the time offset from system/base time
  *
diff --git a/board/sandbox/sandbox.c b/board/sandbox/sandbox.c
index 397e7561d4d..9ca1eca027a 100644
--- a/board/sandbox/sandbox.c
+++ b/board/sandbox/sandbox.c
@@ -31,7 +31,7 @@ void flush_cache(unsigned long start, unsigned long size)
 /* system timer offset in ms */
 static unsigned long sandbox_timer_offset;
 
-void sandbox_timer_add_offset(unsigned long offset)
+void timer_test_add_offset(unsigned long offset)
 {
 	sandbox_timer_offset += offset;
 }
diff --git a/drivers/net/sandbox.c b/drivers/net/sandbox.c
index decce2fa59c..c1363923509 100644
--- a/drivers/net/sandbox.c
+++ b/drivers/net/sandbox.c
@@ -350,7 +350,7 @@ static int sb_eth_recv(struct udevice *dev, int flags, uchar **packetp)
 	struct eth_sandbox_priv *priv = dev_get_priv(dev);
 
 	if (skip_timeout) {
-		sandbox_timer_add_offset(11000UL);
+		timer_test_add_offset(11000UL);
 		skip_timeout = false;
 	}
 
diff --git a/drivers/timer/sandbox_timer.c b/drivers/timer/sandbox_timer.c
index 6d2b045fe86..5228486082c 100644
--- a/drivers/timer/sandbox_timer.c
+++ b/drivers/timer/sandbox_timer.c
@@ -14,7 +14,7 @@
 /* system timer offset in ms */
 static unsigned long sandbox_timer_offset;
 
-void sandbox_timer_add_offset(unsigned long offset)
+void timer_test_add_offset(unsigned long offset)
 {
 	sandbox_timer_offset += offset;
 }
diff --git a/include/regmap.h b/include/regmap.h
index 8359c511d25..3cd7a66cea7 100644
--- a/include/regmap.h
+++ b/include/regmap.h
@@ -274,7 +274,7 @@ int regmap_raw_read_range(struct regmap *map, uint range_num, uint offset,
 		if (cond) \
 			break; \
 		if (IS_ENABLED(CONFIG_SANDBOX) && test_add_time) \
-			sandbox_timer_add_offset(test_add_time); \
+			timer_test_add_offset(test_add_time); \
 		if ((timeout_ms) && get_timer(__start) > (timeout_ms)) { \
 			__ret = regmap_read((map), (addr), &(val)); \
 			break; \
diff --git a/include/time.h b/include/time.h
index 825991e2223..9fd0d73fb4e 100644
--- a/include/time.h
+++ b/include/time.h
@@ -13,6 +13,14 @@ unsigned long get_timer(unsigned long base);
  */
 unsigned long timer_get_us(void);
 
+/*
+ * timer_test_add_offset()
+ *
+ * Allow tests to add to the time reported through lib/time.c functions
+ * offset: number of milliseconds to advance the system time
+ */
+void timer_test_add_offset(unsigned long offset);
+
 /*
  *	These inlines deal with timer wrapping correctly. You are
  *	strongly encouraged to use them