diff --git a/drivers/dma/ste_dma40_ll.c b/drivers/dma/ste_dma40_ll.c
index 121c0ce..5ddd724 100644
--- a/drivers/dma/ste_dma40_ll.c
+++ b/drivers/dma/ste_dma40_ll.c
@@ -20,28 +20,28 @@ void d40_log_cfg(struct stedma40_chan_cfg *cfg,
 	/* src is mem? -> increase address pos */
 	if (cfg->dir ==  DMA_MEM_TO_DEV ||
 	    cfg->dir ==  DMA_MEM_TO_MEM)
-		l1 |= 1 << D40_MEM_LCSP1_SCFG_INCR_POS;
+		l1 |= BIT(D40_MEM_LCSP1_SCFG_INCR_POS);
 
 	/* dst is mem? -> increase address pos */
 	if (cfg->dir ==  DMA_DEV_TO_MEM ||
 	    cfg->dir ==  DMA_MEM_TO_MEM)
-		l3 |= 1 << D40_MEM_LCSP3_DCFG_INCR_POS;
+		l3 |= BIT(D40_MEM_LCSP3_DCFG_INCR_POS);
 
 	/* src is hw? -> master port 1 */
 	if (cfg->dir ==  DMA_DEV_TO_MEM ||
 	    cfg->dir ==  DMA_DEV_TO_DEV)
-		l1 |= 1 << D40_MEM_LCSP1_SCFG_MST_POS;
+		l1 |= BIT(D40_MEM_LCSP1_SCFG_MST_POS);
 
 	/* dst is hw? -> master port 1 */
 	if (cfg->dir ==  DMA_MEM_TO_DEV ||
 	    cfg->dir ==  DMA_DEV_TO_DEV)
-		l3 |= 1 << D40_MEM_LCSP3_DCFG_MST_POS;
+		l3 |= BIT(D40_MEM_LCSP3_DCFG_MST_POS);
 
-	l3 |= 1 << D40_MEM_LCSP3_DCFG_EIM_POS;
+	l3 |= BIT(D40_MEM_LCSP3_DCFG_EIM_POS);
 	l3 |= cfg->dst_info.psize << D40_MEM_LCSP3_DCFG_PSIZE_POS;
 	l3 |= cfg->dst_info.data_width << D40_MEM_LCSP3_DCFG_ESIZE_POS;
 
-	l1 |= 1 << D40_MEM_LCSP1_SCFG_EIM_POS;
+	l1 |= BIT(D40_MEM_LCSP1_SCFG_EIM_POS);
 	l1 |= cfg->src_info.psize << D40_MEM_LCSP1_SCFG_PSIZE_POS;
 	l1 |= cfg->src_info.data_width << D40_MEM_LCSP1_SCFG_ESIZE_POS;
 
@@ -58,39 +58,39 @@ void d40_phy_cfg(struct stedma40_chan_cfg *cfg, u32 *src_cfg, u32 *dst_cfg)
 	if ((cfg->dir == DMA_DEV_TO_MEM) ||
 	    (cfg->dir == DMA_DEV_TO_DEV)) {
 		/* Set master port to 1 */
-		src |= 1 << D40_SREG_CFG_MST_POS;
+		src |= BIT(D40_SREG_CFG_MST_POS);
 		src |= D40_TYPE_TO_EVENT(cfg->dev_type);
 
 		if (cfg->src_info.flow_ctrl == STEDMA40_NO_FLOW_CTRL)
-			src |= 1 << D40_SREG_CFG_PHY_TM_POS;
+			src |= BIT(D40_SREG_CFG_PHY_TM_POS);
 		else
 			src |= 3 << D40_SREG_CFG_PHY_TM_POS;
 	}
 	if ((cfg->dir == DMA_MEM_TO_DEV) ||
 	    (cfg->dir == DMA_DEV_TO_DEV)) {
 		/* Set master port to 1 */
-		dst |= 1 << D40_SREG_CFG_MST_POS;
+		dst |= BIT(D40_SREG_CFG_MST_POS);
 		dst |= D40_TYPE_TO_EVENT(cfg->dev_type);
 
 		if (cfg->dst_info.flow_ctrl == STEDMA40_NO_FLOW_CTRL)
-			dst |= 1 << D40_SREG_CFG_PHY_TM_POS;
+			dst |= BIT(D40_SREG_CFG_PHY_TM_POS);
 		else
 			dst |= 3 << D40_SREG_CFG_PHY_TM_POS;
 	}
 	/* Interrupt on end of transfer for destination */
-	dst |= 1 << D40_SREG_CFG_TIM_POS;
+	dst |= BIT(D40_SREG_CFG_TIM_POS);
 
 	/* Generate interrupt on error */
-	src |= 1 << D40_SREG_CFG_EIM_POS;
-	dst |= 1 << D40_SREG_CFG_EIM_POS;
+	src |= BIT(D40_SREG_CFG_EIM_POS);
+	dst |= BIT(D40_SREG_CFG_EIM_POS);
 
 	/* PSIZE */
 	if (cfg->src_info.psize != STEDMA40_PSIZE_PHY_1) {
-		src |= 1 << D40_SREG_CFG_PHY_PEN_POS;
+		src |= BIT(D40_SREG_CFG_PHY_PEN_POS);
 		src |= cfg->src_info.psize << D40_SREG_CFG_PSIZE_POS;
 	}
 	if (cfg->dst_info.psize != STEDMA40_PSIZE_PHY_1) {
-		dst |= 1 << D40_SREG_CFG_PHY_PEN_POS;
+		dst |= BIT(D40_SREG_CFG_PHY_PEN_POS);
 		dst |= cfg->dst_info.psize << D40_SREG_CFG_PSIZE_POS;
 	}
 
@@ -100,14 +100,14 @@ void d40_phy_cfg(struct stedma40_chan_cfg *cfg, u32 *src_cfg, u32 *dst_cfg)
 
 	/* Set the priority bit to high for the physical channel */
 	if (cfg->high_priority) {
-		src |= 1 << D40_SREG_CFG_PRI_POS;
-		dst |= 1 << D40_SREG_CFG_PRI_POS;
+		src |= BIT(D40_SREG_CFG_PRI_POS);
+		dst |= BIT(D40_SREG_CFG_PRI_POS);
 	}
 
 	if (cfg->src_info.big_endian)
-		src |= 1 << D40_SREG_CFG_LBE_POS;
+		src |= BIT(D40_SREG_CFG_LBE_POS);
 	if (cfg->dst_info.big_endian)
-		dst |= 1 << D40_SREG_CFG_LBE_POS;
+		dst |= BIT(D40_SREG_CFG_LBE_POS);
 
 	*src_cfg = src;
 	*dst_cfg = dst;
@@ -157,15 +157,15 @@ static int d40_phy_fill_lli(struct d40_phy_lli *lli,
 
 	/* If this scatter list entry is the last one, no next link */
 	if (next_lli == 0)
-		lli->reg_lnk = 0x1 << D40_SREG_LNK_PHY_TCP_POS;
+		lli->reg_lnk = BIT(D40_SREG_LNK_PHY_TCP_POS);
 	else
 		lli->reg_lnk = next_lli;
 
 	/* Set/clear interrupt generation on this link item.*/
 	if (term_int)
-		lli->reg_cfg |= 0x1 << D40_SREG_CFG_TIM_POS;
+		lli->reg_cfg |= BIT(D40_SREG_CFG_TIM_POS);
 	else
-		lli->reg_cfg &= ~(0x1 << D40_SREG_CFG_TIM_POS);
+		lli->reg_cfg &= ~BIT(D40_SREG_CFG_TIM_POS);
 
 	/* Post link */
 	lli->reg_lnk |= 0 << D40_SREG_LNK_PHY_PRE_POS;
