diff --git a/target/linux/mediatek/files-5.4/drivers/mtd/mtk-snand/mtk-snand-def.h b/target/linux/mediatek/files-5.4/drivers/mtd/mtk-snand/mtk-snand-def.h
index 1a93d93..8058f7b 100644
--- a/target/linux/mediatek/files-5.4/drivers/mtd/mtk-snand/mtk-snand-def.h
+++ b/target/linux/mediatek/files-5.4/drivers/mtd/mtk-snand/mtk-snand-def.h
@@ -115,6 +115,9 @@
 
 	const uint8_t *spare_sizes;
 	uint32_t num_spare_size;
+
+	uint16_t latch_lat;
+	uint16_t sample_delay;
 };
 
 enum mtk_ecc_regs {