diff --git a/arch/sim/src/sim/up_rptun.c b/arch/sim/src/sim/up_rptun.c
index d3f78826fd..d40070a448 100644
--- a/arch/sim/src/sim/up_rptun.c
+++ b/arch/sim/src/sim/up_rptun.c
@@ -240,7 +240,7 @@ int up_rptun_init(void)
 #endif
 
 #if CONFIG_SIM_RPTUN_MASTER == 0
-  up_rtc_set_lowerhalf(rpmsg_rtc_initialize("server", 0));
+  up_rtc_set_lowerhalf(rpmsg_rtc_initialize(0));
 #endif
 
 #ifdef CONFIG_FS_HOSTFS_RPMSG
diff --git a/boards/sim/sim/sim/configs/rpproxy/defconfig b/boards/sim/sim/sim/configs/rpproxy/defconfig
index cb151f9f83..42f3facdad 100644
--- a/boards/sim/sim/sim/configs/rpproxy/defconfig
+++ b/boards/sim/sim/sim/configs/rpproxy/defconfig
@@ -50,6 +50,7 @@ CONFIG_RTC_ARCH=y
 CONFIG_RTC_DRIVER=y
 CONFIG_RTC_EXTERNAL=y
 CONFIG_RTC_RPMSG=y
+CONFIG_RTC_RPMSG_SERVER_NAME="server"
 CONFIG_SCHED_CHILD_STATUS=y
 CONFIG_SCHED_HAVE_PARENT=y
 CONFIG_SCHED_HPWORK=y
diff --git a/drivers/timers/Kconfig b/drivers/timers/Kconfig
index 686143a652..fb1ddf26cd 100644
--- a/drivers/timers/Kconfig
+++ b/drivers/timers/Kconfig
@@ -297,6 +297,13 @@ config RTC_RPMSG
 	depends on OPENAMP
 	select ARCH_HAVE_RTC_SUBSECONDS
 
+config RTC_RPMSG_SERVER_NAME
+	string "The name of RTC Rpmsg Server"
+	depends on RTC_RPMSG
+	---help---
+		The proc name of rtc server. Client requests time from
+		specified name of remote proc.
+
 endif # RTC
 
 menuconfig WATCHDOG
diff --git a/drivers/timers/rpmsg_rtc.c b/drivers/timers/rpmsg_rtc.c
index 2eef9b5207..bb38e10ade 100644
--- a/drivers/timers/rpmsg_rtc.c
+++ b/drivers/timers/rpmsg_rtc.c
@@ -107,7 +107,6 @@ struct rpmsg_rtc_lowerhalf_s
    */
 
   struct rpmsg_endpoint      ept;
-  FAR const char             *cpuname;
   struct work_s              syncwork;
 
 #ifdef CONFIG_RTC_ALARM
@@ -229,7 +228,8 @@ static void rpmsg_rtc_device_created(FAR struct rpmsg_device *rdev,
 {
   FAR struct rpmsg_rtc_lowerhalf_s *lower = priv;
 
-  if (strcmp(lower->cpuname, rpmsg_get_cpuname(rdev)) == 0)
+  if (strcmp(CONFIG_RTC_RPMSG_SERVER_NAME,
+             rpmsg_get_cpuname(rdev)) == 0)
     {
       lower->ept.priv = lower;
 
@@ -244,7 +244,8 @@ static void rpmsg_rtc_device_destroy(FAR struct rpmsg_device *rdev,
 {
   FAR struct rpmsg_rtc_lowerhalf_s *lower = priv;
 
-  if (strcmp(lower->cpuname, rpmsg_get_cpuname(rdev)) == 0)
+  if (strcmp(CONFIG_RTC_RPMSG_SERVER_NAME,
+             rpmsg_get_cpuname(rdev)) == 0)
     {
       rpmsg_destroy_ept(&lower->ept);
     }
@@ -681,7 +682,6 @@ static void rpmsg_rtc_server_ns_bind(FAR struct rpmsg_device *rdev,
  *   Take remote core RTC as external RTC hardware through rpmsg.
  *
  * Input Parameters:
- *   cpuname - current cpu name
  *   minor  - device minor number
  *
  * Returned Value:
@@ -690,8 +690,7 @@ static void rpmsg_rtc_server_ns_bind(FAR struct rpmsg_device *rdev,
  *
  ****************************************************************************/
 
-FAR struct rtc_lowerhalf_s *rpmsg_rtc_initialize(FAR const char *cpuname,
-                                                 int minor)
+FAR struct rtc_lowerhalf_s *rpmsg_rtc_initialize(int minor)
 {
   FAR struct rpmsg_rtc_lowerhalf_s *lower;
 
@@ -699,7 +698,6 @@ FAR struct rtc_lowerhalf_s *rpmsg_rtc_initialize(FAR const char *cpuname,
   if (lower)
     {
       lower->ops     = &g_rpmsg_rtc_ops;
-      lower->cpuname = cpuname;
 
       rpmsg_register_callback(lower,
                               rpmsg_rtc_device_created,
diff --git a/include/nuttx/timers/rpmsg_rtc.h b/include/nuttx/timers/rpmsg_rtc.h
index b0b2928c82..764904fe3a 100644
--- a/include/nuttx/timers/rpmsg_rtc.h
+++ b/include/nuttx/timers/rpmsg_rtc.h
@@ -42,8 +42,7 @@ extern "C"
 
 #ifdef CONFIG_RTC_RPMSG
 
-FAR struct rtc_lowerhalf_s *rpmsg_rtc_initialize(FAR const char *cpu_name,
-                                                 int minor);
+FAR struct rtc_lowerhalf_s *rpmsg_rtc_initialize(int minor);
 
 FAR struct rtc_lowerhalf_s *rpmsg_rtc_server_initialize(
                                          FAR struct rtc_lowerhalf_s *lower);