diff --git a/src/drivers/driver.h b/src/drivers/driver.h
index dd2f62bed..31bf1407c 100644
--- a/src/drivers/driver.h
+++ b/src/drivers/driver.h
@@ -5179,6 +5179,26 @@ enum wpa_event_type {
 	 * non-zero wait time and that has not been explicitly cancelled.
 	 */
 	EVENT_TX_WAIT_EXPIRE,
+
+	/**
+	  * EVENT_BSS_COLOR_COLLISION - Notification of a BSS color collision
+	  */
+	EVENT_BSS_COLOR_COLLISION,
+
+	/**
+	 * EVENT_CCA_STARTED_NOTIFY - Notification that CCA has started
+	 */
+	EVENT_CCA_STARTED_NOTIFY,
+
+	/**
+	 * EVENT_CCA_ABORTED_NOTIFY - Notification that CCA has aborted
+	 */
+	EVENT_CCA_ABORTED_NOTIFY,
+
+	/**
+	 * EVENT_CCA_NOTIFY - Notification that CCA has completed
+	 */
+	EVENT_CCA_NOTIFY,
 };
 
 
@@ -6071,6 +6091,13 @@ union wpa_event_data {
 	struct unprot_beacon {
 		const u8 *sa;
 	} unprot_beacon;
+
+	/**
+	 * struct bss_color_collision - Data for EVENT_BSS_COLOR_COLLISION
+	 */
+	struct bss_color_collision {
+		u64 bitmap;
+	} bss_color_collision;
 };
 
 /**
diff --git a/src/drivers/driver_common.c b/src/drivers/driver_common.c
index 741521c67..8db786168 100644
--- a/src/drivers/driver_common.c
+++ b/src/drivers/driver_common.c
@@ -91,6 +91,10 @@ const char * event_to_string(enum wpa_event_type event)
 	E2S(UPDATE_DH);
 	E2S(UNPROT_BEACON);
 	E2S(TX_WAIT_EXPIRE);
+	E2S(BSS_COLOR_COLLISION);
+	E2S(CCA_STARTED_NOTIFY);
+	E2S(CCA_ABORTED_NOTIFY);
+	E2S(CCA_NOTIFY);
 	}
 
 	return "UNKNOWN";
diff --git a/src/drivers/driver_nl80211_event.c b/src/drivers/driver_nl80211_event.c
index 085acb85a..22fb4f1e4 100644
--- a/src/drivers/driver_nl80211_event.c
+++ b/src/drivers/driver_nl80211_event.c
@@ -2911,6 +2911,58 @@ static void nl80211_assoc_comeback(struct wpa_driver_nl80211_data *drv,
 }
 
 
+#ifdef CONFIG_IEEE80211AX
+
+static void nl80211_obss_color_collision(struct wpa_driver_nl80211_data *drv,
+					 struct nlattr *tb[])
+{
+	union wpa_event_data data;
+
+	if (!tb[NL80211_ATTR_OBSS_COLOR_BITMAP])
+		return;
+
+	os_memset(&data, 0, sizeof(data));
+	data.bss_color_collision.bitmap =
+		nla_get_u64(tb[NL80211_ATTR_OBSS_COLOR_BITMAP]);
+
+	wpa_printf(MSG_DEBUG, "nl80211: BSS color collision - bitmap %08lx",
+		   data.bss_color_collision.bitmap);
+	wpa_supplicant_event(drv->ctx, EVENT_BSS_COLOR_COLLISION, &data);
+}
+
+
+static void
+nl80211_color_change_announcement_started(struct wpa_driver_nl80211_data *drv)
+{
+	union wpa_event_data data = {};
+
+	wpa_printf(MSG_DEBUG, "nl80211: CCA started");
+	wpa_supplicant_event(drv->ctx, EVENT_CCA_STARTED_NOTIFY, &data);
+}
+
+
+static void
+nl80211_color_change_announcement_aborted(struct wpa_driver_nl80211_data *drv)
+{
+	union wpa_event_data data = {};
+
+	wpa_printf(MSG_DEBUG, "nl80211: CCA aborted");
+	wpa_supplicant_event(drv->ctx, EVENT_CCA_ABORTED_NOTIFY, &data);
+}
+
+
+static void
+nl80211_color_change_announcement_completed(struct wpa_driver_nl80211_data *drv)
+{
+	union wpa_event_data data = {};
+
+	wpa_printf(MSG_DEBUG, "nl80211: CCA completed");
+	wpa_supplicant_event(drv->ctx, EVENT_CCA_NOTIFY, &data);
+}
+
+#endif /* CONFIG_IEEE80211AX */
+
+
 static void do_process_drv_event(struct i802_bss *bss, int cmd,
 				 struct nlattr **tb)
 {
@@ -3164,6 +3216,20 @@ static void do_process_drv_event(struct i802_bss *bss, int cmd,
 		nl80211_assoc_comeback(drv, tb[NL80211_ATTR_MAC],
 				       tb[NL80211_ATTR_TIMEOUT]);
 		break;
+#ifdef CONFIG_IEEE80211AX
+	case NL80211_CMD_OBSS_COLOR_COLLISION:
+		nl80211_obss_color_collision(drv, tb);
+		break;
+	case NL80211_CMD_COLOR_CHANGE_STARTED:
+		nl80211_color_change_announcement_started(drv);
+		break;
+	case NL80211_CMD_COLOR_CHANGE_ABORTED:
+		nl80211_color_change_announcement_aborted(drv);
+		break;
+	case NL80211_CMD_COLOR_CHANGE_COMPLETED:
+		nl80211_color_change_announcement_completed(drv);
+		break;
+#endif /* CONFIG_IEEE80211AX */
 	default:
 		wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Ignored unknown event "
 			"(cmd=%d)", cmd);