diff --git a/arch/arm/mach-rockchip/rk3188/sdram_rk3188.c b/arch/arm/mach-rockchip/rk3188/sdram_rk3188.c
index 946a9f1..981d1d6 100644
--- a/arch/arm/mach-rockchip/rk3188/sdram_rk3188.c
+++ b/arch/arm/mach-rockchip/rk3188/sdram_rk3188.c
@@ -851,29 +851,27 @@
 {
 #if !CONFIG_IS_ENABLED(OF_PLATDATA)
 	struct rk3188_sdram_params *params = dev_get_platdata(dev);
-	const void *blob = gd->fdt_blob;
-	int node = dev_of_offset(dev);
 	int ret;
 
 	/* rk3188 supports only one-channel */
 	params->num_channels = 1;
-	ret = fdtdec_get_int_array(blob, node, "rockchip,pctl-timing",
-				   (u32 *)&params->pctl_timing,
-				   sizeof(params->pctl_timing) / sizeof(u32));
+	ret = dev_read_u32_array(dev, "rockchip,pctl-timing",
+				 (u32 *)&params->pctl_timing,
+				 sizeof(params->pctl_timing) / sizeof(u32));
 	if (ret) {
 		printf("%s: Cannot read rockchip,pctl-timing\n", __func__);
 		return -EINVAL;
 	}
-	ret = fdtdec_get_int_array(blob, node, "rockchip,phy-timing",
-				   (u32 *)&params->phy_timing,
-				   sizeof(params->phy_timing) / sizeof(u32));
+	ret = dev_read_u32_array(dev, "rockchip,phy-timing",
+				 (u32 *)&params->phy_timing,
+				 sizeof(params->phy_timing) / sizeof(u32));
 	if (ret) {
 		printf("%s: Cannot read rockchip,phy-timing\n", __func__);
 		return -EINVAL;
 	}
-	ret = fdtdec_get_int_array(blob, node, "rockchip,sdram-params",
-				   (u32 *)&params->base,
-				   sizeof(params->base) / sizeof(u32));
+	ret = dev_read_u32_array(dev, "rockchip,sdram-params",
+				 (u32 *)&params->base,
+				 sizeof(params->base) / sizeof(u32));
 	if (ret) {
 		printf("%s: Cannot read rockchip,sdram-params\n", __func__);
 		return -EINVAL;
diff --git a/arch/arm/mach-rockchip/rk3288/sdram_rk3288.c b/arch/arm/mach-rockchip/rk3288/sdram_rk3288.c
index 2feda61..b3ed3f2 100644
--- a/arch/arm/mach-rockchip/rk3288/sdram_rk3288.c
+++ b/arch/arm/mach-rockchip/rk3288/sdram_rk3288.c
@@ -1018,29 +1018,27 @@
 {
 #if !CONFIG_IS_ENABLED(OF_PLATDATA)
 	struct rk3288_sdram_params *params = dev_get_platdata(dev);
-	const void *blob = gd->fdt_blob;
-	int node = dev_of_offset(dev);
 	int ret;
 
 	/* Rk3288 supports dual-channel, set default channel num to 2 */
 	params->num_channels = 2;
-	ret = fdtdec_get_int_array(blob, node, "rockchip,pctl-timing",
-				   (u32 *)&params->pctl_timing,
-				   sizeof(params->pctl_timing) / sizeof(u32));
+	ret = dev_read_u32_array(dev, "rockchip,pctl-timing",
+				 (u32 *)&params->pctl_timing,
+				 sizeof(params->pctl_timing) / sizeof(u32));
 	if (ret) {
 		debug("%s: Cannot read rockchip,pctl-timing\n", __func__);
 		return -EINVAL;
 	}
-	ret = fdtdec_get_int_array(blob, node, "rockchip,phy-timing",
-				   (u32 *)&params->phy_timing,
-				   sizeof(params->phy_timing) / sizeof(u32));
+	ret = dev_read_u32_array(dev, "rockchip,phy-timing",
+				 (u32 *)&params->phy_timing,
+				 sizeof(params->phy_timing) / sizeof(u32));
 	if (ret) {
 		debug("%s: Cannot read rockchip,phy-timing\n", __func__);
 		return -EINVAL;
 	}
-	ret = fdtdec_get_int_array(blob, node, "rockchip,sdram-params",
-				   (u32 *)&params->base,
-				   sizeof(params->base) / sizeof(u32));
+	ret = dev_read_u32_array(dev, "rockchip,sdram-params",
+				 (u32 *)&params->base,
+				 sizeof(params->base) / sizeof(u32));
 	if (ret) {
 		debug("%s: Cannot read rockchip,sdram-params\n", __func__);
 		return -EINVAL;
diff --git a/arch/arm/mach-rockchip/rk3399/sdram_rk3399.c b/arch/arm/mach-rockchip/rk3399/sdram_rk3399.c
index 1b91bb1..aae17d5 100644
--- a/arch/arm/mach-rockchip/rk3399/sdram_rk3399.c
+++ b/arch/arm/mach-rockchip/rk3399/sdram_rk3399.c
@@ -1132,13 +1132,11 @@
 {
 #if !CONFIG_IS_ENABLED(OF_PLATDATA)
 	struct rockchip_dmc_plat *plat = dev_get_platdata(dev);
-	const void *blob = gd->fdt_blob;
-	int node = dev_of_offset(dev);
 	int ret;
 
-	ret = fdtdec_get_int_array(blob, node, "rockchip,sdram-params",
-			(u32 *)&plat->sdram_params,
-			sizeof(plat->sdram_params) / sizeof(u32));
+	ret = dev_read_u32_array(dev, "rockchip,sdram-params",
+				 (u32 *)&plat->sdram_params,
+				 sizeof(plat->sdram_params) / sizeof(u32));
 	if (ret) {
 		printf("%s: Cannot read rockchip,sdram-params %d\n",
 		       __func__, ret);