diff --git a/esphome/components/sx1509/__init__.py b/esphome/components/sx1509/__init__.py
index f1b7d5f424..879ced2fb3 100644
--- a/esphome/components/sx1509/__init__.py
+++ b/esphome/components/sx1509/__init__.py
@@ -80,8 +80,8 @@ def validate_mode(value):
 CONF_SX1509 = "sx1509"
 SX1509_PIN_SCHEMA = cv.All(
     {
-        cv.GenerateID(): cv.declare_id(SX1509Component),
-        cv.Required(CONF_SX1509): cv.use_id(SX1509GPIOPin),
+        cv.GenerateID(): cv.declare_id(SX1509GPIOPin),
+        cv.Required(CONF_SX1509): cv.use_id(SX1509Component),
         cv.Required(CONF_NUMBER): cv.int_range(min=0, max=15),
         cv.Optional(CONF_MODE, default={}): cv.All(
             {
diff --git a/esphome/core/helpers.cpp b/esphome/core/helpers.cpp
index 780df3ca6d..bc97259a71 100644
--- a/esphome/core/helpers.cpp
+++ b/esphome/core/helpers.cpp
@@ -358,6 +358,7 @@ template<typename T> T clamp(const T val, const T min, const T max) {
     return max;
   return val;
 }
+template uint8_t clamp(uint8_t, uint8_t, uint8_t);
 template float clamp(float, float, float);
 template int clamp(int, int, int);
 
diff --git a/tests/test4.yaml b/tests/test4.yaml
index 4f2025ad74..bc249c5ecb 100644
--- a/tests/test4.yaml
+++ b/tests/test4.yaml
@@ -59,6 +59,10 @@ tuya:
 pipsolar:
     id: inverter0
 
+sx1509:
+  - id: sx1509_hub
+    address: 0x3E
+
 sensor:
   - platform: homeassistant
     entity_id: sensor.hello_world
@@ -209,6 +213,7 @@ sensor:
       - or:
         - throttle: "20min"
         - delta: 0.02
+
 #
 # platform sensor.apds9960 requires component apds9960
 #
@@ -308,6 +313,11 @@ binary_sensor:
     y_max: 212
     on_state:
       - lambda: 'ESP_LOGI("main", "key0: %s", (x ? "touch" : "release"));'
+  - platform: gpio
+    name: GPIO SX1509 test
+    pin:
+      sx1509: sx1509_hub
+      number: 3
 
 climate:
   - platform: tuya