On Wed, Nov 07, 2012 at 09:52:27PM -0000, Prabhakar Kushwaha wrote:
IFC_FIR_OP_CMD0 issues command for execution without checking flash readiness. It may cause problem if flash is not ready. Instead use IFC_FIR_OP_CW0 which Wait for tWB time and poll R/B to return high or time-out, before issuing command.
NAND_CMD_READID command implemention does not fulfill above requirement. So update its programming.
Signed-off-by: Prabhakar Kushwaha prabhakar@freescale.com Signed-off-by: Hemant Nautiyal hemant.nautiyal@freescale.com
Please note this patch depends upon following patch: "driver/mtd:IFC NAND:Initialise internal SRAM before any write" http://patchwork.ozlabs.org/patch/183550/
drivers/mtd/nand/fsl_ifc_nand.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
Applied to u-boot-nand-flash -- I missed it earlier. Next time please make sure "nand" is in the subject line. Ideally prefix it as "nand/fsl_ifc: wait tWB time..." rather than "driver/mtd/IFC:Wait tWB time...".
-Scott