NAND: rearrange ONFI revision checking, add ONFI 2.3
This patch sync with Brian's patch on Linux in nand_flash_detect_onfi() commit b7b1a29d94c17e4341856381bccb4d17495bea60 Author: Brian Norris <computersforpeace@gmail.com> Date: Sun Dec 12 00:23:33 2010 -0800 mtd: nand: rearrange ONFI revision checking, add ONFI 2.3 In checking for the ONFI revision, the first conditional (for checking "unsupported" ONFI) seems unnecessary. All ONFI revisions should be backwards-compatible; even if this is not the case on some newer ONFI revision, it should simply fail the second version-checking if-else block (i.e., the bit-fields for 1.0, 2.0, etc. would not be set to 1). Thus, we move our "unsupported" condition after having checked each bit field. Also, it's simple enough to add a condition for ONFI revision 2.3. Note that this does *NOT* mean we handle all new features of ONFI versions above 1.0. Signed-off-by: NBrian Norris <computersforpeace@gmail.com> Acked-by: NFlorian Fainelli <ffainelli@freebox.fr> Signed-off-by: NDavid Woodhouse <David.Woodhouse@intel.com> Signed-off-by: NFlorian Fainelli <florian@openwrt.org>
Showing
想要评论请 注册 或 登录