diff --git a/tests/psoc6/dut/pwm.py b/tests/psoc6/dut/pwm.py
index a7e62cbd43ff3..3122333641aa0 100644
--- a/tests/psoc6/dut/pwm.py
+++ b/tests/psoc6/dut/pwm.py
@@ -1,4 +1,7 @@
 # PWM test
+"""
+Setup: Connect pwm_pin to pin_in
+"""
 from machine import PWM, Pin
 import os
 import time