samples: nrf53_sync_rtc: drop IPM support

Nordic platform utilizes mailbox so remove the IPM support
from this sample.

Signed-off-by: Kumar Gala <[email protected]>

Author: galak

samples/boards/nrf/nrf53_sync_rtc/boards/nrf5340dk_nrf5340_cpuapp_mbox.conf

@@ -1,4 +1,6 @@
 CONFIG_LOG=y
 CONFIG_NRF53_SYNC_RTC=y
-CONFIG_IPM_MSG_CH_2_ENABLE=y
-CONFIG_IPM_MSG_CH_2_RX=y
+CONFIG_MBOX=y
+CONFIG_MBOX_NRFX_IPC=y
+
+CONFIG_IPM=n

samples/boards/nrf/nrf53_sync_rtc/net/boards/nrf5340dk_nrf5340_cpunet_mbox.conf

@@ -9,8 +9,3 @@ tests:
         platform_allow: nrf5340dk_nrf5340_cpunet
         integration_platforms:
           - nrf5340dk_nrf5340_cpunet
-    sample.boards.nrf.nrf53_sync_rtc_mbox:
-        platform_allow: nrf5340dk_nrf5340_cpunet
-        integration_platforms:
-          - nrf5340dk_nrf5340_cpunet
-        extra_args: OVERLAY_CONFIG="boards/nrf5340dk_nrf5340_cpunet_mbox.conf"

samples/boards/nrf/nrf53_sync_rtc/net/prj.conf

@@ -33,12 +33,6 @@ static void mbox_callback(const struct device *dev, uint32_t channel,
 	sync_callback();
 }
 
-static void ipm_callback(const struct device *ipmdev, void *user_data,
-			 uint32_t id, volatile void *data)
-{
-	sync_callback();
-}
-
 static int mbox_init(void)
 {
 	const struct device *dev;
@@ -60,25 +54,12 @@ static int mbox_init(void)
 	return mbox_set_enabled(&channel, true);
 }
 
-static int ipm_init(void)
-{
-	const struct device *ipm_dev;
-
-	ipm_dev = device_get_binding("IPM_2");
-	if (ipm_dev == NULL) {
-		return -ENODEV;
-	}
-
-	ipm_register_callback(ipm_dev, ipm_callback, NULL);
-	return ipm_set_enabled(ipm_dev, true);
-}
-
 void main(void)
 {
 	int err;
 
-	LOG_INF("Synchronization using %s driver", IS_ENABLED(CONFIG_MBOX) ? "mbox" : "ipm");
-	err = IS_ENABLED(CONFIG_MBOX) ? mbox_init() : ipm_init();
+	LOG_INF("Synchronization using mbox driver");
+	err = mbox_init();
 	if (err < 0) {
 		LOG_ERR("Failed to initialize sync RTC listener (err:%d)", err);
 	}

samples/boards/nrf/nrf53_sync_rtc/net/sample.yaml

@@ -1,3 +1,6 @@
 CONFIG_BOARD_ENABLE_CPUNET=y
 CONFIG_LOG=y
 CONFIG_NRF53_SYNC_RTC=y
+CONFIG_IPM=n
+CONFIG_MBOX=y
+CONFIG_MBOX_NRFX_IPC=y

samples/boards/nrf/nrf53_sync_rtc/net/src/main.c

@@ -9,9 +9,3 @@ tests:
         platform_allow: nrf5340dk_nrf5340_cpuapp
         integration_platforms:
           - nrf5340dk_nrf5340_cpuapp
-    sample.boards.nrf.nrf53_sync_rtc_mbox:
-        platform_allow: nrf5340dk_nrf5340_cpuapp
-        integration_platforms:
-          - nrf5340dk_nrf5340_cpuapp
-        extra_args: OVERLAY_CONFIG="boards/nrf5340dk_nrf5340_cpuapp_mbox.conf"
-          NET_OVERLAY_CONF="boards/nrf5340dk_nrf5340_cpunet_mbox.conf"