[v2] PL353 SW ECC fixes

[PATCH v2 0/2] PL353 SW ECC fixes

Andrea Scian via B4 Relay posted 2 patches 4 hours ago

Diff against v1
Download series mbox

drivers/mtd/nand/raw/pl35x-nand-controller.c | 5 +++++
1 file changed, 5 insertions(+)

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[PATCH v2 0/2] PL353 SW ECC fixes

Posted by Andrea Scian via B4 Relay 4 hours ago

PL353 has some known errata with its ECC implementation and it may be
useful to switch to software ECC, to avoid issue with this.

On-die ECC is already supported (while I didn't test it) but when
enabling SW ECC we get operation-not-supported error during page write
(page read already work correctly)

IMHO it's enough to have 1-bit Hamming ECC correction, because this is
the only one supported on PL353, but this might be a wrong assumption.

This has been tested with nandflipbits and mtd_nandbiterrs

---
Changes in v2:
- change dev_info() into dev_dbg() to reduce messages
- Link to v1: https://lore.kernel.org/r/20260121-pl353-soft-ecc-support-v1-0-00ad8e160d83@dave.eu

---
Andrea Scian (2):
      mtd: rawnand: pl353: Fix software ECC support
      mtd: rawnand: pl353: Add message about ECC mode

 drivers/mtd/nand/raw/pl35x-nand-controller.c | 5 +++++
 1 file changed, 5 insertions(+)
---
base-commit: 24d479d26b25bce5faea3ddd9fa8f3a6c3129ea7
change-id: 20260121-pl353-soft-ecc-support-794e1e75373a

Best regards,
-- 
Andrea Scian <andrea.scian@dave.eu>