Commit 807fc702 authored by Prabhakar Kushwaha's avatar Prabhakar Kushwaha Committed by Scott Wood
Browse files

driver/mtd: IFC NAND: Add support of ONFI NAND flash



- Fix NAND_CMD_READID command for ONFI detect.
  - Add NAND_CMD_PARAM command to read the ONFI parameter page.
Signed-off-by: default avatarPrabhakar Kushwaha <prabhakar@freescale.com>
Acked-by: default avatarScott Wood <scottwood@freescale.com>
Signed-off-by: default avatarScott Wood <scott@tyr.buserror.net>
parent a35ea807
......@@ -384,19 +384,30 @@ static void fsl_ifc_cmdfunc(struct mtd_info *mtd, unsigned int command,
/* READID must read all possible bytes while CEB is active */
case NAND_CMD_READID:
case NAND_CMD_PARAM: {
int timing = IFC_FIR_OP_RB;
if (command == NAND_CMD_PARAM)
timing = IFC_FIR_OP_RBCD;
out_be32(&ifc->ifc_nand.nand_fir0,
(IFC_FIR_OP_CMD0 << IFC_NAND_FIR0_OP0_SHIFT) |
(IFC_FIR_OP_UA << IFC_NAND_FIR0_OP1_SHIFT) |
(IFC_FIR_OP_RB << IFC_NAND_FIR0_OP2_SHIFT));
(timing << IFC_NAND_FIR0_OP2_SHIFT));
out_be32(&ifc->ifc_nand.nand_fcr0,
NAND_CMD_READID << IFC_NAND_FCR0_CMD0_SHIFT);
/* 4 bytes for manuf, device and exts */
out_be32(&ifc->ifc_nand.nand_fbcr, 4);
ctrl->read_bytes = 4;
command << IFC_NAND_FCR0_CMD0_SHIFT);
out_be32(&ifc->ifc_nand.row3, column);
/*
* although currently it's 8 bytes for READID, we always read
* the maximum 256 bytes(for PARAM)
*/
out_be32(&ifc->ifc_nand.nand_fbcr, 256);
ctrl->read_bytes = 256;
set_addr(mtd, 0, 0, 0);
fsl_ifc_run_command(mtd);
return;
}
/* ERASE1 stores the block and page address */
case NAND_CMD_ERASE1:
......
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