Commit eec417fd authored by Chris Morgan's avatar Chris Morgan Committed by Miquel Raynal
Browse files

mtd: rawnand: hynix: Add support for H27UCG8T2ETR-BC MLC NAND 



Add support for the H27UCG8T2ETR-BC MLC NAND. The NAND is used widely
in the NTC CHIP, is an MLC type NAND, and is 8GB in size. Neither
JEDEC nor ONFI detection identifies it correctly, so the ID is added
to the nand_ids.c file. Additionally, per the datasheet this NAND
appears to use the same paired pages scheme as the Toshiba
TC58TEG5DCLTA00 (dist3), so add support for that to enable use in
SLC emulation mode.

Tested on a NTC CHIP the device is able to write to a ubifs formatted
partition, and then have U-Boot (with proposed patches) boot from a
kernel located on that ubifs formatted partition.

Signed-off-by: default avatarChris Morgan <macromorgan@hotmail.com>
Signed-off-by: default avatarMiquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210930162402.344-1-macroalpha82@gmail.com
parent 6bcd2960

drivers/mtd/nand/raw/nand_hynix.c

+14 −0
Original line number Diff line number Diff line
@@ -686,6 +686,16 @@ h27ucg8t2atrbc_choose_interface_config(struct nand_chip *chip, 
	return nand_choose_best_sdr_timings(chip, iface, NULL);

}



static int h27ucg8t2etrbc_init(struct nand_chip *chip)

{

	struct mtd_info *mtd = nand_to_mtd(chip);



	chip->options |= NAND_NEED_SCRAMBLING;

	mtd_set_pairing_scheme(mtd, &dist3_pairing_scheme);



	return 0;

}



static int hynix_nand_init(struct nand_chip *chip)

{

	struct hynix_nand *hynix;
@@ -707,6 +717,10 @@ static int hynix_nand_init(struct nand_chip *chip) 
		chip->ops.choose_interface_config =

			h27ucg8t2atrbc_choose_interface_config;



	if (!strncmp("H27UCG8T2ETR-BC", chip->parameters.model,

		     sizeof("H27UCG8T2ETR-BC") - 1))

		h27ucg8t2etrbc_init(chip);



	ret = hynix_nand_rr_init(chip);

	if (ret)

		hynix_nand_cleanup(chip);

drivers/mtd/nand/raw/nand_ids.c

+4 −0
Original line number Diff line number Diff line
@@ -51,6 +51,10 @@ struct nand_flash_dev nand_flash_ids[] = { 
		{ .id = {0xad, 0xde, 0x94, 0xda, 0x74, 0xc4} },

		  SZ_8K, SZ_8K, SZ_2M, NAND_NEED_SCRAMBLING, 6, 640,

		  NAND_ECC_INFO(40, SZ_1K) },

	{"H27UCG8T2ETR-BC 64G 3.3V 8-bit",

		{ .id = {0xad, 0xde, 0x14, 0xa7, 0x42, 0x4a} },

		  SZ_16K, SZ_8K, SZ_4M, NAND_NEED_SCRAMBLING, 6, 1664,

		  NAND_ECC_INFO(40, SZ_1K) },

	{"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) },