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mtd: nand: Fix on-die ecc issues in arasan_nfc driver

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Fixed wrong enumeration of nand_config structure. Added chip select
function before reading the nand chip for maf/dev id's, without this
unable to access id's from some of the micron chips. Also added a
print statement to identify if a nand flash is using on-die ecc.

Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This commit is contained in:
T Karthik Reddy 2020-01-19 23:59:23 -07:00 committed by Michal Simek
parent 65bcca9f52
commit 4c2c28a465
1 changed files with 8 additions and 3 deletions
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11
drivers/mtd/nand/raw/arasan_nfc.c
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@ -1120,12 +1120,15 @@ static void arasan_nand_cmd_function(struct mtd_info *mtd, unsigned int command,
static void arasan_check_ondie(struct mtd_info *mtd)
{
struct nand_chip *nand_chip = mtd_to_nand(mtd);
struct nand_config *nand = nand_get_controller_data(nand_chip);
struct nand_drv *info = nand_get_controller_data(nand_chip);
struct nand_config *nand = &info->config;
u8 maf_id, dev_id;
u8 get_feature[4];
u8 set_feature[4] = {ENABLE_ONDIE_ECC, 0x00, 0x00, 0x00};
u32 i;
nand_chip->select_chip(mtd, 0);
/* Send the command for reading device ID */
nand_chip->cmdfunc(mtd, NAND_CMD_RESET, -1, -1);
nand_chip->cmdfunc(mtd, NAND_CMD_READID, 0, -1);
@ -1150,10 +1153,12 @@ static void arasan_check_ondie(struct mtd_info *mtd)
for (i = 0; i < 4; i++)
get_feature[i] = nand_chip->read_byte(mtd);
if (get_feature[0] & ENABLE_ONDIE_ECC)
if (get_feature[0] & ENABLE_ONDIE_ECC) {
nand->on_die_ecc_enabled = true;
else
printf("On-DIE ECC Enabled\n");
} else {
printf("%s: Unable to enable OnDie ECC\n", __func__);
}
/* Use the BBT pattern descriptors */
nand_chip->bbt_td = &bbt_main_descr;