diff --git a/arch/arm/dts/sunxi-u-boot.dtsi b/arch/arm/dts/sunxi-u-boot.dtsi
index 72e95af..5adfd9b 100644
--- a/arch/arm/dts/sunxi-u-boot.dtsi
+++ b/arch/arm/dts/sunxi-u-boot.dtsi
@@ -1,14 +1,5 @@
 #include <config.h>
 
-/*
- * This is the maximum size the U-Boot binary can be, which is basically
- * the start of the environment, minus the start of the U-Boot binary in
- * the MMC. This makes the assumption that the MMC is using 512-bytes
- * blocks, but devices using something other than that remains to be
- * seen.
- */
-#define UBOOT_MMC_MAX_SIZE	(CONFIG_ENV_OFFSET - (CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR * 512))
-
 / {
 	binman {
 		filename = "u-boot-sunxi-with-spl.bin";
@@ -17,9 +8,6 @@
 			filename = "spl/sunxi-spl.bin";
 		};
 		u-boot-img {
-#ifdef CONFIG_MMC
-			size = <UBOOT_MMC_MAX_SIZE>;
-#endif
 			pos = <CONFIG_SPL_PAD_TO>;
 		};
 	};