target/linux/qualcommax/patches-6.6/0400-mtd-rawnand-add-support-for-TH58NYG3S0HBAI4.patch

   1 From 8d8b37d3af2bdccf0a37d2017d876bfc6ce42552 Mon Sep 17 00:00:00 2001
   2 From: Chukun Pan <amadeus@jmu.edu.cn>
   3 Date: Fri, 20 Oct 2023 23:18:21 +0800
   4 Subject: [PATCH 1/1] mtd: rawnand: add support for TH58NYG3S0HBAI4 NAND flash
   5
   6 The Toshiba TH58NYG3S0HBAI4 is detected with 128 byte OOB while the flash
   7 has 256 bytes OOB. Since it is not an ONFI compliant NAND, the model name
   8 cannot be read from anywhere, add a static NAND ID entry to correct this.
   9
  10 However, the NAND ID of this flash is inconsistent with the datasheet.
  11 The actual NAND ID is only 4 ID bytes, the last ID byte is missing.
  12
  13 Datasheet available at (the ID table is on page 50):
  14 https://europe.kioxia.com/content/dam/kioxia/newidr/productinfo/datasheet/201910/DST_TH58NYG3S0HBAI4-TDE_EN_31565.pdf
  15
  16 Datasheet NAND ID: {0x98, 0xa3, 0x91, 0x26, 0x76}
  17 Actual NAND ID: {0x98, 0xa3, 0x91, 0x26}
  18
  19 It seems that this flash may be counterfeit, but another Toshiba flash
  20 also has the same problem. Maybe the driver has a bug, or some Toshiba
  21 nand flash is like this. Anyway, add a static NAND ID entry with only
  22 4 ID bytes as a hack to make sure it works.
  23
  24 Tested on Arcadyan AW1000 flashed with OpenWrt.
  25
  26 Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
  27 ---
  28  drivers/mtd/nand/raw/nand_ids.c | 3 +++
  29  1 file changed, 3 insertions(+)
  30
  31 --- a/drivers/mtd/nand/raw/nand_ids.c
  32 +++ b/drivers/mtd/nand/raw/nand_ids.c
  33 @@ -55,6 +55,9 @@ struct nand_flash_dev nand_flash_ids[] =
  34                 { .id = {0xad, 0xde, 0x14, 0xa7, 0x42, 0x4a} },
  35                   SZ_16K, SZ_8K, SZ_4M, NAND_NEED_SCRAMBLING, 6, 1664,
  36                   NAND_ECC_INFO(40, SZ_1K) },
  37 +       {"TH58NYG3S0HBAI4 8G 1.8V 8-bit", /* Last ID bytes missing */
  38 +               { .id = {0x98, 0xa3, 0x91, 0x26} },
  39 +                 SZ_4K, SZ_1K, SZ_256K, 0, 4, 256, NAND_ECC_INFO(8, SZ_512) },
  40         {"TH58NVG2S3HBAI4 4G 3.3V 8-bit",
  41                 { .id = {0x98, 0xdc, 0x91, 0x15, 0x76} },
  42                   SZ_2K, SZ_512, SZ_128K, 0, 5, 128, NAND_ECC_INFO(8, SZ_512) },