diff --git a/app/overlays/tgl-h/ipc4_overlay.conf b/app/overlays/tgl-h/ipc4_overlay.conf
index 199566830..16ac59db3 100644
--- a/app/overlays/tgl-h/ipc4_overlay.conf
+++ b/app/overlays/tgl-h/ipc4_overlay.conf
@@ -10,6 +10,12 @@ CONFIG_PCM_CONVERTER_FORMAT_S16_C16_AND_S16_C32=y
 CONFIG_PCM_CONVERTER_FORMAT_S16_C32_AND_S32_C32=y
 CONFIG_PCM_CONVERTER_FORMAT_S16_C32_AND_S24_C32=y
 CONFIG_PCM_CONVERTER_FORMAT_S16_C32_AND_S16_C32=y
-CONFIG_LOG_BACKEND_ADSP_MTRACE=y
+
+# route SOF logs to Zephyr logging subsystem
 CONFIG_SOF_LOG_LEVEL_INF=y
 CONFIG_ZEPHYR_LOG=y
+
+# use mtrace for IPC4 and disable etrace/ADSP backend
+CONFIG_LOG_BACKEND_ADSP_MTRACE=y
+CONFIG_LOG_BACKEND_ADSP=n
+CONFIG_LOG_OUTPUT_FORMAT_LINUX_TIMESTAMP=y
diff --git a/app/overlays/tgl/ipc4_overlay.conf b/app/overlays/tgl/ipc4_overlay.conf
index 199566830..16ac59db3 100644
--- a/app/overlays/tgl/ipc4_overlay.conf
+++ b/app/overlays/tgl/ipc4_overlay.conf
@@ -10,6 +10,12 @@ CONFIG_PCM_CONVERTER_FORMAT_S16_C16_AND_S16_C32=y
 CONFIG_PCM_CONVERTER_FORMAT_S16_C32_AND_S32_C32=y
 CONFIG_PCM_CONVERTER_FORMAT_S16_C32_AND_S24_C32=y
 CONFIG_PCM_CONVERTER_FORMAT_S16_C32_AND_S16_C32=y
-CONFIG_LOG_BACKEND_ADSP_MTRACE=y
+
+# route SOF logs to Zephyr logging subsystem
 CONFIG_SOF_LOG_LEVEL_INF=y
 CONFIG_ZEPHYR_LOG=y
+
+# use mtrace for IPC4 and disable etrace/ADSP backend
+CONFIG_LOG_BACKEND_ADSP_MTRACE=y
+CONFIG_LOG_BACKEND_ADSP=n
+CONFIG_LOG_OUTPUT_FORMAT_LINUX_TIMESTAMP=y