8429bb3975
Micron provides READ RETRY support via the ONFI vendor-specific parameter block (to indicate how many read-retry modes are available) and the ONFI {GET,SET}_FEATURES commands with a vendor-specific feature address (to support reading/switching the current read-retry mode). The recommended sequence is as follows: 1. Perform PAGE_READ operation 2. If no ECC error, we are done 3. Run SET_FEATURES with feature address 89h, mode 1 4. Retry PAGE_READ operation 5. If ECC error and there are remaining supported modes, increment the mode and return to step 3. Otherwise, this is a true ECC error. 6. Run SET_FEATURES with feature address 89h, mode 0, to return to the default state. This patch implements the chip->setup_read_retry() callback for Micron and fills in the chip->read_retries. Tested on Micron MT29F32G08CBADA, which supports 8 read-retry modes. The Micron vendor-specific table was checked against the datasheets for the following Micron NAND: Needs retry Cell-type Part number Vendor revision Byte 180 ----------- --------- ---------------- --------------- ------------ No SLC MT29F16G08ABABA 1 Reserved (0) No MLC MT29F32G08CBABA 1 Reserved (0) No SLC MT29F1G08AACWP 1 0 Yes MLC MT29F32G08CBADA 1 08h Yes MLC MT29F64G08CBABA 2 08h Signed-off-by: Brian Norris <computersforpeace@gmail.com> Acked-by: Huang Shijie <b32955@freescale.com> |
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bbm.h | ||
blktrans.h | ||
cfi.h | ||
cfi_endian.h | ||
concat.h | ||
doc2000.h | ||
flashchip.h | ||
fsmc.h | ||
ftl.h | ||
gen_probe.h | ||
inftl.h | ||
latch-addr-flash.h | ||
lpc32xx_mlc.h | ||
lpc32xx_slc.h | ||
map.h | ||
mtd.h | ||
mtdram.h | ||
nand-gpio.h | ||
nand.h | ||
nand_bch.h | ||
nand_ecc.h | ||
ndfc.h | ||
nftl.h | ||
onenand.h | ||
onenand_regs.h | ||
partitions.h | ||
pfow.h | ||
physmap.h | ||
pismo.h | ||
plat-ram.h | ||
qinfo.h | ||
sh_flctl.h | ||
sharpsl.h | ||
spear_smi.h | ||
super.h | ||
ubi.h | ||
xip.h |