diff --git a/arch/arm/mach-uniphier/dram/umc-ph1-ld4.c b/arch/arm/mach-uniphier/dram/umc-ph1-ld4.c
index 09b2c1c..72447cc 100644
--- a/arch/arm/mach-uniphier/dram/umc-ph1-ld4.c
+++ b/arch/arm/mach-uniphier/dram/umc-ph1-ld4.c
@@ -76,7 +76,7 @@ static void umc_start_ssif(void __iomem *ssif_base)
 	writel(0x00000001, ssif_base + UMC_DMDRST);
 }
 
-static int umc_dramcont_init(void __iomem *dramcont, void __iomem *ca_base,
+static int umc_dramcont_init(void __iomem *dc_base, void __iomem *ca_base,
 			     int freq, unsigned long size, bool ddr3plus)
 {
 	enum dram_freq freq_e;
@@ -113,29 +113,29 @@ static int umc_dramcont_init(void __iomem *dramcont, void __iomem *ca_base,
 		return -EINVAL;
 	}
 
-	writel(umc_cmdctla_plus[freq_e], dramcont + UMC_CMDCTLA);
-	writel(umc_cmdctlb_plus[freq_e], dramcont + UMC_CMDCTLB);
-	writel(umc_spcctla[freq_e][size_e], dramcont + UMC_SPCCTLA);
-	writel(umc_spcctlb[freq_e], dramcont + UMC_SPCCTLB);
-	writel(umc_rdatactl[freq_e], dramcont + UMC_RDATACTL_D0);
-	writel(0x04060806, dramcont + UMC_WDATACTL_D0);
-	writel(0x04a02000, dramcont + UMC_DATASET);
+	writel(umc_cmdctla_plus[freq_e], dc_base + UMC_CMDCTLA);
+	writel(umc_cmdctlb_plus[freq_e], dc_base + UMC_CMDCTLB);
+	writel(umc_spcctla[freq_e][size_e], dc_base + UMC_SPCCTLA);
+	writel(umc_spcctlb[freq_e], dc_base + UMC_SPCCTLB);
+	writel(umc_rdatactl[freq_e], dc_base + UMC_RDATACTL_D0);
+	writel(0x04060806, dc_base + UMC_WDATACTL_D0);
+	writel(0x04a02000, dc_base + UMC_DATASET);
 	writel(0x00000000, ca_base + 0x2300);
-	writel(0x00400020, dramcont + UMC_DCCGCTL);
-	writel(0x00000003, dramcont + 0x7000);
-	writel(0x0000000f, dramcont + 0x8000);
-	writel(0x000000c3, dramcont + 0x8004);
-	writel(0x00000071, dramcont + 0x8008);
-	writel(0x0000003b, dramcont + UMC_DICGCTLA);
-	writel(0x020a0808, dramcont + UMC_DICGCTLB);
-	writel(0x00000004, dramcont + UMC_FLOWCTLG);
+	writel(0x00400020, dc_base + UMC_DCCGCTL);
+	writel(0x00000003, dc_base + 0x7000);
+	writel(0x0000000f, dc_base + 0x8000);
+	writel(0x000000c3, dc_base + 0x8004);
+	writel(0x00000071, dc_base + 0x8008);
+	writel(0x0000003b, dc_base + UMC_DICGCTLA);
+	writel(0x020a0808, dc_base + UMC_DICGCTLB);
+	writel(0x00000004, dc_base + UMC_FLOWCTLG);
 	writel(0x80000201, ca_base + 0xc20);
-	writel(0x0801e01e, dramcont + UMC_FLOWCTLA);
-	writel(0x00200000, dramcont + UMC_FLOWCTLB);
-	writel(0x00004444, dramcont + UMC_FLOWCTLC);
-	writel(0x200a0a00, dramcont + UMC_SPCSETB);
-	writel(0x00000000, dramcont + UMC_SPCSETD);
-	writel(0x00000520, dramcont + UMC_DFICUPDCTLA);
+	writel(0x0801e01e, dc_base + UMC_FLOWCTLA);
+	writel(0x00200000, dc_base + UMC_FLOWCTLB);
+	writel(0x00004444, dc_base + UMC_FLOWCTLC);
+	writel(0x200a0a00, dc_base + UMC_SPCSETB);
+	writel(0x00000000, dc_base + UMC_SPCSETD);
+	writel(0x00000520, dc_base + UMC_DFICUPDCTLA);
 
 	return 0;
 }
diff --git a/arch/arm/mach-uniphier/dram/umc-ph1-pro4.c b/arch/arm/mach-uniphier/dram/umc-ph1-pro4.c
index 93d2e2c..23fb7b9 100644
--- a/arch/arm/mach-uniphier/dram/umc-ph1-pro4.c
+++ b/arch/arm/mach-uniphier/dram/umc-ph1-pro4.c
@@ -68,10 +68,10 @@ static void umc_start_ssif(void __iomem *ssif_base)
 	writel(0x00000001, ssif_base + UMC_DMDRST);
 }
 
-static int umc_dramcont_init(void __iomem *dramcont, void __iomem *ca_base,
+static int umc_dramcont_init(void __iomem *dc_base, void __iomem *ca_base,
 			     int freq, unsigned long size, bool ddr3plus)
 {
-	enum dram_size dram_size;
+	enum dram_size size_e;
 
 	if (freq != 1600) {
 		pr_err("Unsupported DDR frequency %d MHz\n", freq);
@@ -85,43 +85,43 @@ static int umc_dramcont_init(void __iomem *dramcont, void __iomem *ca_base,
 
 	switch (size) {
 	case SZ_128M:
-		dram_size = DRAM_SZ_128M;
+		size_e = DRAM_SZ_128M;
 		break;
 	case SZ_256M:
-		dram_size = DRAM_SZ_256M;
+		size_e = DRAM_SZ_256M;
 		break;
 	case SZ_512M:
-		dram_size = DRAM_SZ_512M;
+		size_e = DRAM_SZ_512M;
 		break;
 	default:
 		pr_err("unsupported DRAM size 0x%08lx (per 16bit)\n", size);
 		return -EINVAL;
 	}
 
-	writel(0x66bb0f17, dramcont + UMC_CMDCTLA);
-	writel(0x18c6aa44, dramcont + UMC_CMDCTLB);
-	writel(umc_spcctla[dram_size], dramcont + UMC_SPCCTLA);
-	writel(0x00ff0008, dramcont + UMC_SPCCTLB);
-	writel(0x000c00ae, dramcont + UMC_RDATACTL_D0);
-	writel(0x000c00ae, dramcont + UMC_RDATACTL_D1);
-	writel(0x04060802, dramcont + UMC_WDATACTL_D0);
-	writel(0x04060802, dramcont + UMC_WDATACTL_D1);
-	writel(0x04a02000, dramcont + UMC_DATASET);
+	writel(0x66bb0f17, dc_base + UMC_CMDCTLA);
+	writel(0x18c6aa44, dc_base + UMC_CMDCTLB);
+	writel(umc_spcctla[size_e], dc_base + UMC_SPCCTLA);
+	writel(0x00ff0008, dc_base + UMC_SPCCTLB);
+	writel(0x000c00ae, dc_base + UMC_RDATACTL_D0);
+	writel(0x000c00ae, dc_base + UMC_RDATACTL_D1);
+	writel(0x04060802, dc_base + UMC_WDATACTL_D0);
+	writel(0x04060802, dc_base + UMC_WDATACTL_D1);
+	writel(0x04a02000, dc_base + UMC_DATASET);
 	writel(0x00000000, ca_base + 0x2300);
-	writel(0x00400020, dramcont + UMC_DCCGCTL);
-	writel(0x0000000f, dramcont + 0x7000);
-	writel(0x0000000f, dramcont + 0x8000);
-	writel(0x000000c3, dramcont + 0x8004);
-	writel(0x00000071, dramcont + 0x8008);
-	writel(0x00000004, dramcont + UMC_FLOWCTLG);
-	writel(0x00000000, dramcont + 0x0060);
+	writel(0x00400020, dc_base + UMC_DCCGCTL);
+	writel(0x0000000f, dc_base + 0x7000);
+	writel(0x0000000f, dc_base + 0x8000);
+	writel(0x000000c3, dc_base + 0x8004);
+	writel(0x00000071, dc_base + 0x8008);
+	writel(0x00000004, dc_base + UMC_FLOWCTLG);
+	writel(0x00000000, dc_base + 0x0060);
 	writel(0x80000201, ca_base + 0xc20);
-	writel(0x0801e01e, dramcont + UMC_FLOWCTLA);
-	writel(0x00200000, dramcont + UMC_FLOWCTLB);
-	writel(0x00004444, dramcont + UMC_FLOWCTLC);
-	writel(0x200a0a00, dramcont + UMC_SPCSETB);
-	writel(0x00010000, dramcont + UMC_SPCSETD);
-	writel(0x80000020, dramcont + UMC_DFICUPDCTLA);
+	writel(0x0801e01e, dc_base + UMC_FLOWCTLA);
+	writel(0x00200000, dc_base + UMC_FLOWCTLB);
+	writel(0x00004444, dc_base + UMC_FLOWCTLC);
+	writel(0x200a0a00, dc_base + UMC_SPCSETB);
+	writel(0x00010000, dc_base + UMC_SPCSETD);
+	writel(0x80000020, dc_base + UMC_DFICUPDCTLA);
 
 	return 0;
 }
diff --git a/arch/arm/mach-uniphier/dram/umc-ph1-sld8.c b/arch/arm/mach-uniphier/dram/umc-ph1-sld8.c
index d873130..6cacd25 100644
--- a/arch/arm/mach-uniphier/dram/umc-ph1-sld8.c
+++ b/arch/arm/mach-uniphier/dram/umc-ph1-sld8.c
@@ -79,7 +79,7 @@ static void umc_start_ssif(void __iomem *ssif_base)
 	writel(0x00000001, ssif_base + UMC_DMDRST);
 }
 
-static int umc_dramcont_init(void __iomem *dramcont, void __iomem *ca_base,
+static int umc_dramcont_init(void __iomem *dc_base, void __iomem *ca_base,
 			     int freq, unsigned long size, bool ddr3plus)
 {
 	enum dram_freq freq_e;
@@ -115,30 +115,30 @@ static int umc_dramcont_init(void __iomem *dramcont, void __iomem *ca_base,
 	}
 
 	writel((ddr3plus ? umc_cmdctla_plus : umc_cmdctla)[freq_e],
-	       dramcont + UMC_CMDCTLA);
+	       dc_base + UMC_CMDCTLA);
 	writel((ddr3plus ? umc_cmdctlb_plus : umc_cmdctlb)[freq_e],
-	       dramcont + UMC_CMDCTLB);
-	writel(umc_spcctla[freq_e][size_e], dramcont + UMC_SPCCTLA);
-	writel(umc_spcctlb[freq_e], dramcont + UMC_SPCCTLB);
-	writel(umc_rdatactl[freq_e], dramcont + UMC_RDATACTL_D0);
-	writel(0x04060806, dramcont + UMC_WDATACTL_D0);
-	writel(0x04a02000, dramcont + UMC_DATASET);
+	       dc_base + UMC_CMDCTLB);
+	writel(umc_spcctla[freq_e][size_e], dc_base + UMC_SPCCTLA);
+	writel(umc_spcctlb[freq_e], dc_base + UMC_SPCCTLB);
+	writel(umc_rdatactl[freq_e], dc_base + UMC_RDATACTL_D0);
+	writel(0x04060806, dc_base + UMC_WDATACTL_D0);
+	writel(0x04a02000, dc_base + UMC_DATASET);
 	writel(0x00000000, ca_base + 0x2300);
-	writel(0x00400020, dramcont + UMC_DCCGCTL);
-	writel(0x00000003, dramcont + 0x7000);
-	writel(0x0000004f, dramcont + 0x8000);
-	writel(0x000000c3, dramcont + 0x8004);
-	writel(0x00000077, dramcont + 0x8008);
-	writel(0x0000003b, dramcont + UMC_DICGCTLA);
-	writel(0x020a0808, dramcont + UMC_DICGCTLB);
-	writel(0x00000004, dramcont + UMC_FLOWCTLG);
+	writel(0x00400020, dc_base + UMC_DCCGCTL);
+	writel(0x00000003, dc_base + 0x7000);
+	writel(0x0000004f, dc_base + 0x8000);
+	writel(0x000000c3, dc_base + 0x8004);
+	writel(0x00000077, dc_base + 0x8008);
+	writel(0x0000003b, dc_base + UMC_DICGCTLA);
+	writel(0x020a0808, dc_base + UMC_DICGCTLB);
+	writel(0x00000004, dc_base + UMC_FLOWCTLG);
 	writel(0x80000201, ca_base + 0xc20);
-	writel(0x0801e01e, dramcont + UMC_FLOWCTLA);
-	writel(0x00200000, dramcont + UMC_FLOWCTLB);
-	writel(0x00004444, dramcont + UMC_FLOWCTLC);
-	writel(0x200a0a00, dramcont + UMC_SPCSETB);
-	writel(0x00000000, dramcont + UMC_SPCSETD);
-	writel(0x00000520, dramcont + UMC_DFICUPDCTLA);
+	writel(0x0801e01e, dc_base + UMC_FLOWCTLA);
+	writel(0x00200000, dc_base + UMC_FLOWCTLB);
+	writel(0x00004444, dc_base + UMC_FLOWCTLC);
+	writel(0x200a0a00, dc_base + UMC_SPCSETB);
+	writel(0x00000000, dc_base + UMC_SPCSETD);
+	writel(0x00000520, dc_base + UMC_DFICUPDCTLA);
 
 	return 0;
 }
diff --git a/arch/arm/mach-uniphier/dram/umc-proxstream2.c b/arch/arm/mach-uniphier/dram/umc-proxstream2.c
index 8690906..50c0238 100644
--- a/arch/arm/mach-uniphier/dram/umc-proxstream2.c
+++ b/arch/arm/mach-uniphier/dram/umc-proxstream2.c
@@ -404,12 +404,12 @@ static int ddrphy_training(void __iomem *phy_base)
 }
 
 /* UMC */
-static void umc_set_system_latency(void __iomem *umc_dc_base, int phy_latency)
+static void umc_set_system_latency(void __iomem *dc_base, int phy_latency)
 {
 	u32 val;
 	int latency;
 
-	val = readl(umc_dc_base + UMC_RDATACTL_D0);
+	val = readl(dc_base + UMC_RDATACTL_D0);
 	latency = (val & UMC_RDATACTL_RADLTY_MASK) >> UMC_RDATACTL_RADLTY_SHIFT;
 	latency += (val & UMC_RDATACTL_RAD2LTY_MASK) >>
 						UMC_RDATACTL_RAD2LTY_SHIFT;
@@ -427,18 +427,18 @@ static void umc_set_system_latency(void __iomem *umc_dc_base, int phy_latency)
 		val |= latency << UMC_RDATACTL_RADLTY_SHIFT;
 	}
 
-	writel(val, umc_dc_base + UMC_RDATACTL_D0);
-	writel(val, umc_dc_base + UMC_RDATACTL_D1);
+	writel(val, dc_base + UMC_RDATACTL_D0);
+	writel(val, dc_base + UMC_RDATACTL_D1);
 
-	readl(umc_dc_base + UMC_RDATACTL_D1); /* relax */
+	readl(dc_base + UMC_RDATACTL_D1); /* relax */
 }
 
 /* enable/disable auto refresh */
-void umc_refresh_ctrl(void __iomem *umc_dc_base, int enable)
+void umc_refresh_ctrl(void __iomem *dc_base, int enable)
 {
 	u32 tmp;
 
-	tmp = readl(umc_dc_base + UMC_SPCSETB);
+	tmp = readl(dc_base + UMC_SPCSETB);
 	tmp &= ~UMC_SPCSETB_AREFMD_MASK;
 
 	if (enable)
@@ -446,7 +446,7 @@ void umc_refresh_ctrl(void __iomem *umc_dc_base, int enable)
 	else
 		tmp |= UMC_SPCSETB_AREFMD_REG;
 
-	writel(tmp, umc_dc_base + UMC_SPCSETB);
+	writel(tmp, dc_base + UMC_SPCSETB);
 	udelay(1);
 }
 
@@ -458,7 +458,7 @@ static void umc_ud_init(void __iomem *umc_base, int ch)
 		writel(0x00000033, umc_base + UMC_PAIR1DOFF_D0);
 }
 
-static int umc_dc_init(void __iomem *umc_dc_base, enum dram_freq freq,
+static int umc_dc_init(void __iomem *dc_base, enum dram_freq freq,
 		       unsigned long size, int width, int ch)
 {
 	enum dram_size size_e;
@@ -480,14 +480,13 @@ static int umc_dc_init(void __iomem *umc_dc_base, enum dram_freq freq,
 		return -EINVAL;
 	}
 
-	writel(umc_cmdctla[freq], umc_dc_base + UMC_CMDCTLA);
+	writel(umc_cmdctla[freq], dc_base + UMC_CMDCTLA);
 
 	writel(ch == 2 ? umc_cmdctlb_ch2[freq] : umc_cmdctlb_ch01[freq],
-	       umc_dc_base + UMC_CMDCTLB);
+	       dc_base + UMC_CMDCTLB);
 
-	writel(umc_spcctla[freq][size_e],
-	       umc_dc_base + UMC_SPCCTLA);
-	writel(umc_spcctlb[freq], umc_dc_base + UMC_SPCCTLB);
+	writel(umc_spcctla[freq][size_e], dc_base + UMC_SPCCTLA);
+	writel(umc_spcctlb[freq], dc_base + UMC_SPCCTLB);
 
 	val = 0x000e000e;
 	latency = 12;
@@ -502,38 +501,38 @@ static int umc_dc_init(void __iomem *umc_dc_base, enum dram_freq freq,
 		val |= latency << UMC_RDATACTL_RADLTY_SHIFT;
 	}
 
-	writel(val, umc_dc_base + UMC_RDATACTL_D0);
+	writel(val, dc_base + UMC_RDATACTL_D0);
 	if (width >= 32)
-		writel(val, umc_dc_base + UMC_RDATACTL_D1);
+		writel(val, dc_base + UMC_RDATACTL_D1);
 
-	writel(0x04060A02, umc_dc_base + UMC_WDATACTL_D0);
+	writel(0x04060A02, dc_base + UMC_WDATACTL_D0);
 	if (width >= 32)
-		writel(0x04060A02, umc_dc_base + UMC_WDATACTL_D1);
-	writel(0x04000000, umc_dc_base + UMC_DATASET);
-	writel(0x00400020, umc_dc_base + UMC_DCCGCTL);
-	writel(0x00000084, umc_dc_base + UMC_FLOWCTLG);
-	writel(0x00000000, umc_dc_base + UMC_ACSSETA);
+		writel(0x04060A02, dc_base + UMC_WDATACTL_D1);
+	writel(0x04000000, dc_base + UMC_DATASET);
+	writel(0x00400020, dc_base + UMC_DCCGCTL);
+	writel(0x00000084, dc_base + UMC_FLOWCTLG);
+	writel(0x00000000, dc_base + UMC_ACSSETA);
 
 	writel(ch == 2 ? umc_flowctla_ch2[freq] : umc_flowctla_ch01[freq],
-	       umc_dc_base + UMC_FLOWCTLA);
+	       dc_base + UMC_FLOWCTLA);
 
-	writel(0x00004400, umc_dc_base + UMC_FLOWCTLC);
-	writel(0x200A0A00, umc_dc_base + UMC_SPCSETB);
-	writel(0x00000520, umc_dc_base + UMC_DFICUPDCTLA);
-	writel(0x0000000D, umc_dc_base + UMC_RESPCTL);
+	writel(0x00004400, dc_base + UMC_FLOWCTLC);
+	writel(0x200A0A00, dc_base + UMC_SPCSETB);
+	writel(0x00000520, dc_base + UMC_DFICUPDCTLA);
+	writel(0x0000000D, dc_base + UMC_RESPCTL);
 
 	if (ch != 2) {
-		writel(0x00202000, umc_dc_base + UMC_FLOWCTLB);
-		writel(0xFDBFFFFF, umc_dc_base + UMC_FLOWCTLOB0);
-		writel(0xFFFFFFFF, umc_dc_base + UMC_FLOWCTLOB1);
-		writel(0x00080700, umc_dc_base + UMC_BSICMAPSET);
+		writel(0x00202000, dc_base + UMC_FLOWCTLB);
+		writel(0xFDBFFFFF, dc_base + UMC_FLOWCTLOB0);
+		writel(0xFFFFFFFF, dc_base + UMC_FLOWCTLOB1);
+		writel(0x00080700, dc_base + UMC_BSICMAPSET);
 	} else {
-		writel(0x00200000, umc_dc_base + UMC_FLOWCTLB);
-		writel(0x00000000, umc_dc_base + UMC_BSICMAPSET);
+		writel(0x00200000, dc_base + UMC_FLOWCTLB);
+		writel(0x00000000, dc_base + UMC_BSICMAPSET);
 	}
 
-	writel(0x00000000, umc_dc_base + UMC_ERRMASKA);
-	writel(0x00000000, umc_dc_base + UMC_ERRMASKB);
+	writel(0x00000000, dc_base + UMC_ERRMASKA);
+	writel(0x00000000, dc_base + UMC_ERRMASKB);
 
 	return 0;
 }
@@ -541,17 +540,17 @@ static int umc_dc_init(void __iomem *umc_dc_base, enum dram_freq freq,
 static int umc_ch_init(void __iomem *umc_ch_base, enum dram_freq freq,
 		       unsigned long size, unsigned int width, int ch)
 {
-	void __iomem *umc_dc_base = umc_ch_base + 0x00011000;
+	void __iomem *dc_base = umc_ch_base + 0x00011000;
 	void __iomem *phy_base = umc_ch_base + 0x00030000;
 	int ret;
 
-	writel(0x00000002, umc_dc_base + UMC_INITSET);
-	while (readl(umc_dc_base + UMC_INITSTAT) & BIT(2))
+	writel(0x00000002, dc_base + UMC_INITSET);
+	while (readl(dc_base + UMC_INITSTAT) & BIT(2))
 		cpu_relax();
 
 	/* deassert PHY reset signals */
 	writel(UMC_DIOCTLA_CTL_NRST | UMC_DIOCTLA_CFG_NRST,
-	       umc_dc_base + UMC_DIOCTLA);
+	       dc_base + UMC_DIOCTLA);
 
 	ddrphy_init(phy_base, freq, width, ch);
 
@@ -563,7 +562,7 @@ static int umc_ch_init(void __iomem *umc_ch_base, enum dram_freq freq,
 	if (ret)
 		return ret;
 
-	ret = umc_dc_init(umc_dc_base, freq, size, width, ch);
+	ret = umc_dc_init(dc_base, freq, size, width, ch);
 	if (ret)
 		return ret;
 
@@ -576,15 +575,15 @@ static int umc_ch_init(void __iomem *umc_ch_base, enum dram_freq freq,
 	udelay(1);
 
 	/* match the system latency between UMC and PHY */
-	umc_set_system_latency(umc_dc_base,
+	umc_set_system_latency(dc_base,
 			       ddrphy_get_system_latency(phy_base, width));
 
 	udelay(1);
 
 	/* stop auto refresh before clearing FIFO in PHY */
-	umc_refresh_ctrl(umc_dc_base, 0);
+	umc_refresh_ctrl(dc_base, 0);
 	ddrphy_fifo_reset(phy_base);
-	umc_refresh_ctrl(umc_dc_base, 1);
+	umc_refresh_ctrl(dc_base, 1);
 
 	udelay(10);
 
