diff --git a/arch/arm/include/asm/arch-qca-common/qpic_nand.h b/arch/arm/include/asm/arch-qca-common/qpic_nand.h
index c8b6ba6de8..4bfc6b81cd 100644
--- a/arch/arm/include/asm/arch-qca-common/qpic_nand.h
+++ b/arch/arm/include/asm/arch-qca-common/qpic_nand.h
@@ -562,7 +562,7 @@ enum qpic_verion{
 	QCA_QPIC_V2_1_1,
 };
 
-extern unsigned int qpic_frequency, qpic_phase, qpic_training_offset;
+extern unsigned int qpic_frequency, qpic_phase;
 
 /* result type */
 typedef enum {
diff --git a/board/qca/arm/ipq9574/ipq9574.c b/board/qca/arm/ipq9574/ipq9574.c
index d35e3d62f2..173354f282 100644
--- a/board/qca/arm/ipq9574/ipq9574.c
+++ b/board/qca/arm/ipq9574/ipq9574.c
@@ -35,7 +35,8 @@ struct sdhci_host mmc_host;
 extern int ipq9574_edma_init(void *cfg);
 extern int ipq_spi_init(u16);
 
-unsigned int qpic_frequency = 0, qpic_phase = 0, qpic_training_offset = 0;
+unsigned int qpic_frequency = 0, qpic_phase = 0;
+extern unsigned int qpic_training_offset;
 
 void qca_serial_init(struct ipq_serial_platdata *plat)
 {
diff --git a/drivers/mtd/nand/qpic_nand.c b/drivers/mtd/nand/qpic_nand.c
index 400ee2cf3f..8847fb1264 100644
--- a/drivers/mtd/nand/qpic_nand.c
+++ b/drivers/mtd/nand/qpic_nand.c
@@ -47,6 +47,7 @@ struct nand_onfi_para_page onfi_para;
 typedef unsigned long addr_t;
 
 static uint32_t hw_ver;
+unsigned int qpic_training_offset = 0;
 
 #ifdef CONFIG_QPIC_SERIAL
 static struct qpic_serial_nand_params qpic_serial_nand_tbl[] = {