diff --git a/src/soc/rockchip/rk3288/soc.c b/src/soc/rockchip/rk3288/soc.c
index 3c5ca21037..20f5cece92 100644
--- a/src/soc/rockchip/rk3288/soc.c
+++ b/src/soc/rockchip/rk3288/soc.c
@@ -13,7 +13,7 @@
 
 static void soc_init(struct device *dev)
 {
-	ram_resource_kb(dev, 0, (uintptr_t)_dram/KiB, sdram_size_mb()*(MiB/KiB));
+	ram_range(dev, 0, (uintptr_t)_dram, sdram_size_mb() * MiB);
 	if (display_init_required())
 		rk_display_init(dev, (uintptr_t)_framebuffer,
 				REGION_SIZE(framebuffer));
diff --git a/src/soc/rockchip/rk3399/soc.c b/src/soc/rockchip/rk3399/soc.c
index 10bc9baa01..03c39a9daa 100644
--- a/src/soc/rockchip/rk3399/soc.c
+++ b/src/soc/rockchip/rk3399/soc.c
@@ -21,7 +21,7 @@ void bootmem_platform_add_ranges(void)
 
 static void soc_read_resources(struct device *dev)
 {
-	ram_resource_kb(dev, 0, (uintptr_t)_dram / KiB, sdram_size_mb() * KiB);
+	ram_range(dev, 0, (uintptr_t)_dram, sdram_size_mb() * MiB);
 }
 
 static void soc_init(struct device *dev)