diff --git a/drivers/amlogic/media/vout/lcd/lcd_common.c b/drivers/amlogic/media/vout/lcd/lcd_common.c
index e1b2ee8783eb..9f59f81dac99 100644
--- a/drivers/amlogic/media/vout/lcd/lcd_common.c
+++ b/drivers/amlogic/media/vout/lcd/lcd_common.c
@@ -567,8 +567,7 @@ int lcd_power_load_from_dts(struct lcd_config_s *pconf,
 					lcd_cpu_gpio_probe(index);
 				break;
 			case LCD_POWER_TYPE_EXTERN:
-				if (pconf->extern_index == 0xff)
-					pconf->extern_index = index;
+				lcd_extern_index_lut_add(index);
 				break;
 			default:
 				break;
@@ -640,7 +639,7 @@ int lcd_power_load_from_unifykey(struct lcd_config_s *pconf,
 				lcd_cpu_gpio_probe(index);
 			break;
 		case LCD_POWER_TYPE_EXTERN:
-			pconf->extern_index = index;
+			lcd_extern_index_lut_add(index);
 			break;
 		case LCD_POWER_TYPE_CLK_SS:
 			temp = pconf->lcd_power->power_on_step[i].value;
@@ -697,8 +696,7 @@ int lcd_power_load_from_unifykey(struct lcd_config_s *pconf,
 				lcd_cpu_gpio_probe(index);
 			break;
 		case LCD_POWER_TYPE_EXTERN:
-			if (pconf->extern_index == 0xff)
-				pconf->extern_index = index;
+			lcd_extern_index_lut_add(index);
 			break;
 		default:
 			break;