diff --git a/docs/en/source/camera_devices/5_advanced_guide/multi_camera/gmsl_camera.md b/docs/en/source/camera_devices/5_advanced_guide/multi_camera/gmsl_camera.md
index 568e42f0..ee7c3365 100644
--- a/docs/en/source/camera_devices/5_advanced_guide/multi_camera/gmsl_camera.md
+++ b/docs/en/source/camera_devices/5_advanced_guide/multi_camera/gmsl_camera.md
@@ -26,7 +26,18 @@ Update the `usb_port` values in [multi_gmsl_camera_synced.launch.py](https://git
 
 ## Synchronization setup
 
-GMSL multi-camera synchronization does not require Multi-Camera Sync Hub Pro. Both cameras use `secondary_synced` mode. The receiving camera starts first; the camera that enables the host-side GMSL trigger starts two seconds later.
+GMSL multi-camera synchronization does not require Multi-Camera Sync Hub Pro. In the current example, both cameras use `secondary_synced` mode. The receiving camera starts first; the camera that enables the host-side GMSL trigger starts two seconds later.
+
+### GMSL Link Triggering Modes
+
+The current example uses a host-side SoC PWM trigger source over the GMSL link. The two triggering modes below are available; the exact availability depends on the camera model, firmware, and SDK version. In one camera group, set `enable_gmsl_trigger` to `true` on only one camera; the other cameras receive the same trigger signal.
+
+| Mode | Configuration and behavior |
+| --- | --- |
+| `secondary_synced` | Set all cameras to `secondary_synced`. Cameras start capturing as soon as the streams start and adjust the capture timing according to the PWM trigger signal; they continue capturing if the trigger signal stops. The PWM trigger frequency should match the stream frame rate. This is the mode used by the current example. |
+| `hardware_triggering` | Set all cameras to `hardware_triggering`. Cameras capture images only after receiving a PWM hardware trigger signal; the number of frames captured per trigger is set by `frames_per_trigger`. For the GMSL link, the PWM trigger frequency should not exceed half of the stream frame rate; for example, it should not exceed 15 FPS when the stream runs at 30 FPS. |
+
+> Note: When synchronizing GMSL cameras through the 8-pin synchronization interface, the supported synchronization modes are the same as for USB cameras. See [Multi-Camera Synchronization](./multi_camera_synced.md). The `gmsl_trigger_fps` parameter and `/dev/camsync` in this section apply to GMSL link triggering.
 
 **Additional Parameter Settings**
 
diff --git a/docs/zh/source/camera_devices/5_advanced_guide/multi_camera/gmsl_camera.md b/docs/zh/source/camera_devices/5_advanced_guide/multi_camera/gmsl_camera.md
index 1c40733e..648b8ccf 100644
--- a/docs/zh/source/camera_devices/5_advanced_guide/multi_camera/gmsl_camera.md
+++ b/docs/zh/source/camera_devices/5_advanced_guide/multi_camera/gmsl_camera.md
@@ -26,7 +26,18 @@ ros2 run orbbec_camera list_devices_node
 
 ## 同步配置
 
-GMSL 多相机同步不需要 Multi-Camera Sync Hub Pro。两台相机均使用 `secondary_synced` 模式。接收触发信号的相机先启动，启用主机端 GMSL 触发的相机在两秒后启动。
+GMSL 多相机同步不需要 Multi-Camera Sync Hub Pro。当前示例中两台相机均使用 `secondary_synced` 模式。接收触发信号的相机先启动，启用主机端 GMSL 触发的相机在两秒后启动。
+
+### GMSL 链路触发模式
+
+当前示例通过 GMSL 链路使用主机 SoC 产生的 PWM 触发源进行同步，支持以下两种触发模式。具体可用模式以相机型号、固件和 SDK 版本为准。同一组相机中仅需在一台相机上将 `enable_gmsl_trigger` 设置为 `true`，其他相机接收相同的触发信号。
+
+| 模式 | 配置及行为 |
+| --- | --- |
+| `secondary_synced` | 所有相机设置为 `secondary_synced`。相机启动数据流后立即采集，并根据 PWM 触发信号调整采集时刻；触发信号停止后仍继续采集。PWM 触发频率应与数据流帧率一致。当前示例使用此模式。 |
+| `hardware_triggering` | 所有相机设置为 `hardware_triggering`。相机仅在收到 PWM 硬件触发信号后采集图像，每次触发的帧数由 `frames_per_trigger` 设置。对于 GMSL 链路，PWM 触发频率不应超过数据流帧率的一半；例如数据流为 30 FPS 时，触发频率不应超过 15 FPS。 |
+
+> 注意：通过 GMSL 相机的 8 针同步接口进行同步时，支持的同步模式与 USB 相机相同，请参考[多相机同步](./multi_camera_synced.md)。本节的 `gmsl_trigger_fps` 和 `/dev/camsync` 适用于 GMSL 链路触发方式。
 
 **额外的参数设置**