diff --git a/drivers/media/vout/hdmitx21/hw/hdmi_tx_hw.c b/drivers/media/vout/hdmitx21/hw/hdmi_tx_hw.c
index 933b16dec..e324e5186 100644
--- a/drivers/media/vout/hdmitx21/hw/hdmi_tx_hw.c
+++ b/drivers/media/vout/hdmitx21/hw/hdmi_tx_hw.c
@@ -1240,9 +1240,10 @@ static int hdmitx_set_dispmode(struct hdmitx_hw_common *tx_hw)
 			data32 |= ((para->cs == HDMI_COLORSPACE_YUV420 ? 2 : 1) << 28);
 		break;
 	case MESON_CPU_ID_T7:
-	default:
-		data32 |= (0 << 0);
-		data32 |= (0 << 1);
+		if (hdev->tx_comm.enc_idx == 0)
+			data32 |= (1 << 0);
+		else
+			data32 |= (1 << 1);
 		data32 |= (para->timing.h_pol << 2);
 		data32 |= (para->timing.v_pol << 3);
 		data32 |= (0 << 4);
@@ -1254,6 +1255,8 @@ static int hdmitx_set_dispmode(struct hdmitx_hw_common *tx_hw)
 		data32 |= (0 << 24);
 		data32 |= (0 << 28);
 		break;
+	default:
+		break;
 	}
 	hd21_write_reg(VPU_HDMI_SETTING, data32);
 	/* for s7/s1a, ycbcr -> rgb */