请问uboot中擦写nand的参数quiet是什么？

struct nand_erase_options { ulong length; /* number of bytes to erase */ ulong offset; /* first address in NAND to erase */ int quiet; /* don't display progress messages */ int jffs2; /* if true: format for jffs2 usage * (write appropriate cleanmarker blocks) */ int scrub; /* if true, really clean NAND by erasing * bad blocks (UNSAFE) */ };
不只是显示作用吧，感觉对flash影响挺大，谁能告诉我uboot中擦写nand的参数quiet是什么玩意