diff --git a/tests/components/adc/test.nrf52-mcumgr.yaml b/tests/components/adc/test.nrf52-mcumgr.yaml
deleted file mode 100644
index 4be5b4b5c2..0000000000
--- a/tests/components/adc/test.nrf52-mcumgr.yaml
+++ /dev/null
@@ -1,23 +0,0 @@
-sensor:
-  - platform: adc
-    pin: VDDHDIV5
-    name: "VDDH Voltage"
-    update_interval: 5sec
-    filters:
-      - multiply: 5
-  - platform: adc
-    pin: VDD
-    name: "VDD Voltage"
-    update_interval: 5sec
-  - platform: adc
-    pin: AIN0
-    name: "AIN0 Voltage"
-    update_interval: 5sec
-  - platform: adc
-    pin: P0.03
-    name: "AIN1 Voltage"
-    update_interval: 5sec
-  - platform: adc
-    name: "AIN2 Voltage"
-    update_interval: 5sec
-    pin: 4
diff --git a/tests/components/adc/test.bk72xx-ard.yaml b/tests/components/adc/validate.bk72xx-ard.yaml
similarity index 64%
rename from tests/components/adc/test.bk72xx-ard.yaml
rename to tests/components/adc/validate.bk72xx-ard.yaml
index 09ef0e1fad..0064276e30 100644
--- a/tests/components/adc/test.bk72xx-ard.yaml
+++ b/tests/components/adc/validate.bk72xx-ard.yaml
@@ -1,3 +1,5 @@
+# Config only: every LibreTiny chip compiles the same ADC code, covered by the
+# ln882x-ard build; this checks the BK72xx analog pin names.
 sensor:
   - id: adc_my_sensor
     platform: adc
diff --git a/tests/components/adc/test.esp32-p4-idf.yaml b/tests/components/adc/validate.esp32-p4-idf.yaml
similarity index 67%
rename from tests/components/adc/test.esp32-p4-idf.yaml
rename to tests/components/adc/validate.esp32-p4-idf.yaml
index 77cf50d17c..708ab03f76 100644
--- a/tests/components/adc/test.esp32-p4-idf.yaml
+++ b/tests/components/adc/validate.esp32-p4-idf.yaml
@@ -1,3 +1,5 @@
+# Config only: the P4 compiles the same ADC code as the esp32-s3-idf build
+# (curve fitting calibration), only the pin table differs.
 sensor:
   - id: adc_my_sensor
     platform: adc
diff --git a/tests/components/adc/test.esp32-s2-idf.yaml b/tests/components/adc/validate.esp32-s2-idf.yaml
similarity index 58%
rename from tests/components/adc/test.esp32-s2-idf.yaml
rename to tests/components/adc/validate.esp32-s2-idf.yaml
index a3019466b5..b8d6923bc2 100644
--- a/tests/components/adc/test.esp32-s2-idf.yaml
+++ b/tests/components/adc/validate.esp32-s2-idf.yaml
@@ -1,3 +1,6 @@
+# Config only: the S2 shares the C2's line fitting path (no default_vref) and
+# the original ESP32's ADC init (no clk_src); both are compiled by those
+# builds, only the S2 pin table differs.
 sensor:
   - id: adc_my_sensor
     platform: adc