0901-spansion_nand_id_fix.patch 1.4 KB

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  1. From 8b61a1a33e41456ebeafa0ebe7ec0fccf859861e Mon Sep 17 00:00:00 2001
  2. From: Nikolay Martynov <mar.kolya@gmail.com>
  3. Date: Wed, 25 Nov 2015 20:43:46 -0500
  4. Subject: [PATCH] mtd: nand: Fix Spansion sparearea size detection
  5. According to datasheet S34ML02G2 and S34ML04G2 have
  6. larger sparea area size than was detected.
  7. Signed-off-by: Nikolay Martynov <mar.kolya@gmail.com>
  8. ---
  9. drivers/mtd/nand/nand_base.c | 9 +++++++++
  10. 1 file changed, 9 insertions(+)
  11. --- a/drivers/mtd/nand/nand_base.c
  12. +++ b/drivers/mtd/nand/nand_base.c
  13. @@ -3571,6 +3571,7 @@ static void nand_decode_ext_id(struct mt
  14. /*
  15. * Field definitions are in the following datasheets:
  16. * Old style (4,5 byte ID): Samsung K9GAG08U0M (p.32)
  17. + * Spansion S34ML02G2 (p.33)
  18. * New Samsung (6 byte ID): Samsung K9GAG08U0F (p.44)
  19. * Hynix MLC (6 byte ID): Hynix H27UBG8T2B (p.22)
  20. *
  21. @@ -3668,6 +3669,19 @@ static void nand_decode_ext_id(struct mt
  22. *busw = (extid & 0x01) ? NAND_BUSWIDTH_16 : 0;
  23. /*
  24. + * Spansion S34ML0[24]G2 have oobsize twice as large
  25. + * as S34ML01G2 encoded in the same bit. We
  26. + * differinciate them by their ID length
  27. + */
  28. + if (id_data[0] == NAND_MFR_AMD
  29. + && (id_data[1] == 0xda
  30. + || id_data[1] == 0xdc
  31. + || id_data[1] == 0xca
  32. + || id_data[1] == 0xcc)) {
  33. + mtd->oobsize *= 2;
  34. + }
  35. +
  36. + /*
  37. * Toshiba 24nm raw SLC (i.e., not BENAND) have 32B OOB per
  38. * 512B page. For Toshiba SLC, we decode the 5th/6th byte as
  39. * follows: