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mtd: rawnand: fsl_elbc: Fix detection when nand_scan_ident() has not selected ecc.mode 

ecc.mode is set to 0 (aliased to NAND_ECC_NONE) either when function
nand_scan_ident() has not selected ecc.mode or when it selected it to none
ecc mode.

Distinguish between these two states by checking of node property
"nand-ecc-mode" which function nand_scan_ident() uses for filling ecc.mode.

This change fixes usage of none ecc mode if it is specified in DTS file.

Fixes: c9ea9019c5 ("mtd: rawnand: fsl_elbc: Use ECC configuration from device tree")
Signed-off-by: Pali Rohár <pali@kernel.org>
This commit is contained in:
Pali Rohár 2022-06-20 13:07:03 +02:00 committed by Peng Fan
parent 284c1a9b4b
commit 712a172499
1 changed files with 5 additions and 1 deletions
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6
drivers/mtd/nand/raw/fsl_elbc_nand.c
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@ -745,7 +745,11 @@ static int fsl_elbc_chip_init(int devnum, u8 *addr, struct udevice *dev)
return ret; return ret;
/* If nand_scan_ident() has not selected ecc.mode, do it now */ /* If nand_scan_ident() has not selected ecc.mode, do it now */
if (nand->ecc.mode == NAND_ECC_NONE) { if (nand->ecc.mode == 0
#if CONFIG_IS_ENABLED(OF_CONTROL)
&& !ofnode_read_string(nand->flash_node, "nand-ecc-mode")
#endif
) {
/* If CS Base Register selects full hardware ECC then use it */ /* If CS Base Register selects full hardware ECC then use it */
if ((br & BR_DECC) == BR_DECC_CHK_GEN) { if ((br & BR_DECC) == BR_DECC_CHK_GEN) {
nand->ecc.mode = NAND_ECC_HW; nand->ecc.mode = NAND_ECC_HW;