Dear Marek Vasut, Thanks for your patches.But when I patch them to my u-boot,I get a error. I get u-boot-imx from denx. git apply U-Boot-1-4-common-imx-Implement-generic-u-boot.nand-target.patch error: patch failed: Makefile:470 error: Makefile: patch does not apply error: patch failed: arch/arm/imx-common/Makefile:50 your wanxs