Initial commit

target/linux/qualcommax/patches-6.6/0400-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
+@@ -58,6 +58,9 @@ 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) },