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mtd: gpmi: provide the option to use legacy bch geometry

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Provide an option in DT to use legacy bch geometry, which compatible
with the 3.10 kernel bch setting. To enable the feature, adding
"fsl,legacy-bch-geometry" under gpmi-nand node.

NOTICE: The feature must be enabled/disabled in both u-boot and kernel.

Signed-off-by: Han Xu <han.xu@nxp.com>
Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Ye Li 2020-05-04 22:08:51 +08:00 committed by Stefano Babic
parent 616f03daba
commit 51cdf83eea
3 changed files with 6 additions and 2 deletions
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4
drivers/mtd/nand/raw/mxs_nand.c
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@ -1053,8 +1053,8 @@ static int mxs_nand_set_geometry(struct mtd_info *mtd, struct bch_geometry *geo)
return -EINVAL;
}
if (!(chip->ecc_strength_ds > 0 && chip->ecc_step_ds > 0) &&
(mtd->oobsize < 1024)) {
if ((!(chip->ecc_strength_ds > 0 && chip->ecc_step_ds > 0) &&
mtd->oobsize < 1024) || nand_info->legacy_bch_geometry) {
dev_warn(this->dev, "use legacy bch geometry\n");
return mxs_nand_legacy_calc_ecc_layout(geo, mtd);
}

2
drivers/mtd/nand/raw/mxs_nand_dt.c
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@ -69,6 +69,8 @@ static int mxs_nand_dt_probe(struct udevice *dev)
info->use_minimum_ecc = dev_read_bool(dev, "fsl,use-minimum-ecc");
info->legacy_bch_geometry = dev_read_bool(dev, "fsl,legacy-bch-geometry");
return mxs_nand_init_ctrl(info);
}

2
include/mxs_nand.h
View File

@ -43,6 +43,8 @@ struct mxs_nand_info {
struct udevice *dev;
unsigned int max_ecc_strength_supported;
bool use_minimum_ecc;
/* legacy bch geometry flag */
bool legacy_bch_geometry;
int cur_chip;
uint32_t cmd_queue_len;