kernel: add support for Toshiba TH58NYG3S0HBAI4

Correct oob size from 128 to 256 for Toshiba TH58NYG3S0HBAI4 flash.
Since it is not ONFI compliant NAND, the model name cannot be read
from anywhere, add a static NAND ID entry to correct this.

However, the NAND ID of this flash is inconsistent with the datasheet.
The actual NAND ID is only 4 ID bytes, the last ID byte is missing.[1]

Maybe this flash is counterfeit, or maybe it's another problem.
Another Toshiba flash had the same problem before. Refer to commit
a83dc6b ("kernel: move Toshiba-TC58NVG0S3H patch to ipq40xx"), put
the patch into qualcommax target to avoid affecting other devices.

The patch is verified on Arcadyan AW1000.

[1] Datasheet available at (the ID table is on page 50):
https://europe.kioxia.com/content/dam/kioxia/newidr/productinfo/datasheet/201910/DST_TH58NYG3S0HBAI4-TDE_EN_31565.pdf

Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
Reviewed-by: Robert Marko <robimarko@gmail.com>

diff --git a/target/linux/qualcommax/patches-6.1/0400-mtd-rawnand-add-support-for-TH58NYG3S0HBAI4.patch b/target/linux/qualcommax/patches-6.1/0400-mtd-rawnand-add-support-for-TH58NYG3S0HBAI4.patch
new file mode 100644 (file)
index 0000000..c526819
--- /dev/null
+++ b/target/linux/qualcommax/patches-6.1/0400-mtd-rawnand-add-support-for-TH58NYG3S0HBAI4.patch
@@ -0,0 +1,42 @@
+From 8d8b37d3af2bdccf0a37d2017d876bfc6ce42552 Mon Sep 17 00:00:00 2001
+From: Chukun Pan <amadeus@jmu.edu.cn>
+Date: Fri, 20 Oct 2023 23:18:21 +0800
+Subject: [PATCH 1/1] mtd: rawnand: add support for TH58NYG3S0HBAI4 NAND flash
+
+The Toshiba TH58NYG3S0HBAI4 is detected with 128 byte OOB while the flash
+has 256 bytes OOB. Since it is not an ONFI compliant NAND, the model name
+cannot be read from anywhere, add a static NAND ID entry to correct this.
+
+However, the NAND ID of this flash is inconsistent with the datasheet.
+The actual NAND ID is only 4 ID bytes, the last ID byte is missing.
+
+Datasheet available at (the ID table is on page 50):
+https://europe.kioxia.com/content/dam/kioxia/newidr/productinfo/datasheet/201910/DST_TH58NYG3S0HBAI4-TDE_EN_31565.pdf
+
+Datasheet NAND ID: {0x98, 0xa3, 0x91, 0x26, 0x76}
+Actual NAND ID: {0x98, 0xa3, 0x91, 0x26}
+
+It seems that this flash may be counterfeit, but another Toshiba flash
+also has the same problem. Maybe the driver has a bug, or some Toshiba
+nand flash is like this. Anyway, add a static NAND ID entry with only
+4 ID bytes as a hack to make sure it works.
+
+Tested on Arcadyan AW1000 flashed with OpenWrt.
+
+Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
+---
+ drivers/mtd/nand/raw/nand_ids.c | 3 +++
+ 1 file changed, 3 insertions(+)
+
+--- a/drivers/mtd/nand/raw/nand_ids.c
++++ b/drivers/mtd/nand/raw/nand_ids.c
+@@ -55,6 +55,9 @@ struct nand_flash_dev nand_flash_ids[] =
+               { .id = {0xad, 0xde, 0x14, 0xa7, 0x42, 0x4a} },
+                 SZ_16K, SZ_8K, SZ_4M, NAND_NEED_SCRAMBLING, 6, 1664,
+                 NAND_ECC_INFO(40, SZ_1K) },
++      {"TH58NYG3S0HBAI4 8G 1.8V 8-bit", /* Last ID bytes missing */
++              { .id = {0x98, 0xa3, 0x91, 0x26} },
++                SZ_4K, SZ_1K, SZ_256K, 0, 4, 256, NAND_ECC_INFO(8, SZ_512) },
+       {"TH58NVG2S3HBAI4 4G 3.3V 8-bit",
+               { .id = {0x98, 0xdc, 0x91, 0x15, 0x76} },
+                 SZ_2K, SZ_512, SZ_128K, 0, 5, 128, NAND_ECC_INFO(8, SZ_512) },