diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index cd494209352a..78c3fb4b4e40 100644
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -1230,6 +1230,8 @@ static struct dma_chan *at_dma_xlate(struct of_phandle_args *dma_spec,
 	per_id = dma_spec->args[1];
 	atslave->cfg = ATC_FIFOCFG_HALFFIFO | ATC_DST_H2SEL_HW
 		      | ATC_SRC_H2SEL_HW | ATC_DST_PER(per_id)
+		      | ATC_DST_PER_MSB(per_id)
+		      | ATC_SRC_PER_MSB(per_id)
 		      | ATC_SRC_PER(per_id);
 	atslave->dma_dev = &dmac_pdev->dev;
 
diff --git a/include/linux/platform_data/dma-atmel.h b/include/linux/platform_data/dma-atmel.h
index cab0997be3de..e95f19c65873 100644
--- a/include/linux/platform_data/dma-atmel.h
+++ b/include/linux/platform_data/dma-atmel.h
@@ -35,16 +35,20 @@ struct at_dma_slave {
 
 
 /* Platform-configurable bits in CFG */
+#define ATC_PER_MSB(h)	((0x30U & (h)) >> 4)	/* Extract most significant bits of a handshaking identifier */
+
 #define	ATC_SRC_PER(h)		(0xFU & (h))	/* Channel src rq associated with periph handshaking ifc h */
 #define	ATC_DST_PER(h)		((0xFU & (h)) <<  4)	/* Channel dst rq associated with periph handshaking ifc h */
 #define	ATC_SRC_REP		(0x1 <<  8)	/* Source Replay Mod */
 #define	ATC_SRC_H2SEL		(0x1 <<  9)	/* Source Handshaking Mod */
 #define		ATC_SRC_H2SEL_SW	(0x0 <<  9)
 #define		ATC_SRC_H2SEL_HW	(0x1 <<  9)
+#define	ATC_SRC_PER_MSB(h)	(ATC_PER_MSB(h) << 10)	/* Channel src rq (most significant bits) */
 #define	ATC_DST_REP		(0x1 << 12)	/* Destination Replay Mod */
 #define	ATC_DST_H2SEL		(0x1 << 13)	/* Destination Handshaking Mod */
 #define		ATC_DST_H2SEL_SW	(0x0 << 13)
 #define		ATC_DST_H2SEL_HW	(0x1 << 13)
+#define	ATC_DST_PER_MSB(h)	(ATC_PER_MSB(h) << 14)	/* Channel dst rq (most significant bits) */
 #define	ATC_SOD			(0x1 << 16)	/* Stop On Done */
 #define	ATC_LOCK_IF		(0x1 << 20)	/* Interface Lock */
 #define	ATC_LOCK_B		(0x1 << 21)	/* AHB Bus Lock */