diff --git a/arch/arm64/boot/dts/ti/k3-am623-pfc-750-8400.dts b/arch/arm64/boot/dts/ti/k3-am623-pfc-750-8400.dts
index 7500cedecef3..5f59d8c7486c 100644
--- a/arch/arm64/boot/dts/ti/k3-am623-pfc-750-8400.dts
+++ b/arch/arm64/boot/dts/ti/k3-am623-pfc-750-8400.dts
@@ -26,7 +26,7 @@
 			reg = <0>;
 			label = "sys";
 			linux,default-trigger = "timer";
-			led-default-intensity = <255 80 0>; /* Orange */
+			led-default-intensity = <255 80 0 64>; /* Orange, brightness 64/255 */
 		};
 
 		led@1 {
diff --git a/drivers/leds/rgb/wago-m4-led-wrapper.c b/drivers/leds/rgb/wago-m4-led-wrapper.c
index 7f5ec5dff076..e0d4bbb75b61 100644
--- a/drivers/leds/rgb/wago-m4-led-wrapper.c
+++ b/drivers/leds/rgb/wago-m4-led-wrapper.c
@@ -394,9 +394,10 @@ static void wago_led_init_subled(struct wago_led *led)
 
 /*
  * wago_led_apply_default_intensity - read optional 'led-default-intensity'
- * DT property and apply R/G/B values to subled_info[].
+ * DT property and apply R/G/B values and optional brightness to the LED.
  *
- * Property format: <R G B>  (three u32 values, each 0-255)
+ * Property format: <R G B>        (three u32 values, each 0-255)
+ *              or: <R G B brightness>  (four u32 values, each 0-255)
  * If the property is absent or malformed the subled defaults (255/255/255)
  * set by wago_led_init_subled() are kept unchanged.
  */
@@ -404,18 +405,28 @@ static void wago_led_apply_default_intensity(struct device *dev,
 					    struct wago_led *led,
 					    struct fwnode_handle *fwnode)
 {
-	u32 rgb[3];
+	u32 rgba[4] = { 255, 255, 255, LED_FULL };
+	int count;
+
+	/* Accept both 3-cell (R G B) and 4-cell (R G B brightness) */
+	count = fwnode_property_count_u32(fwnode, "led-default-intensity");
+	if (count != 3 && count != 4)
+		return; /* property absent or wrong size — keep defaults */
 
 	if (fwnode_property_read_u32_array(fwnode, "led-default-intensity",
-					   rgb, ARRAY_SIZE(rgb)))
-		return; /* property absent — keep defaults */
+					   rgba, count))
+		return;
 
-	led->subled_info[CH_RED].intensity   = clamp_val(rgb[0], 0, 255);
-	led->subled_info[CH_GREEN].intensity = clamp_val(rgb[1], 0, 255);
-	led->subled_info[CH_BLUE].intensity  = clamp_val(rgb[2], 0, 255);
+	led->subled_info[CH_RED].intensity   = clamp_val(rgba[0], 0, 255);
+	led->subled_info[CH_GREEN].intensity = clamp_val(rgba[1], 0, 255);
+	led->subled_info[CH_BLUE].intensity  = clamp_val(rgba[2], 0, 255);
 
-	dev_dbg(dev, "LED %u: default intensity RGB(%u,%u,%u) from DT\n",
-		led->index, rgb[0], rgb[1], rgb[2]);
+	if (count == 4)
+		led->mc_cdev.led_cdev.brightness = clamp_val(rgba[3], 0, LED_FULL);
+
+	dev_dbg(dev, "LED %u: default intensity RGB(%u,%u,%u) brightness=%u from DT\n",
+		led->index, rgba[0], rgba[1], rgba[2],
+		led->mc_cdev.led_cdev.brightness);
 }
 
 /*