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156c00dedc
This flash-chip is used on the Asus TUF-AX4200 and TUF-AX6000 routers. As the filogic target only uses kernel 5.15, skip the 5.10 backport. Signed-off-by: David Bauer <mail@david-bauer.net>
107 lines
3.0 KiB
Diff
107 lines
3.0 KiB
Diff
From 6154c7a583483d7b69f53bea868efdc369edd563 Mon Sep 17 00:00:00 2001
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From: Mikhail Kshevetskiy <mikhail.kshevetskiy@iopsys.eu>
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Date: Mon, 10 Oct 2022 13:51:10 +0300
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Subject: [PATCH] mtd: spinand: winbond: add Winbond W25N02KV flash support
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Add support of Winbond W25N02KV flash
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Signed-off-by: Mikhail Kshevetskiy <mikhail.kshevetskiy@iopsys.eu>
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Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
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Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
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Link: https://lore.kernel.org/linux-mtd/20221010105110.446674-2-mikhail.kshevetskiy@iopsys.eu
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---
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drivers/mtd/nand/spi/winbond.c | 75 ++++++++++++++++++++++++++++++++++
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1 file changed, 75 insertions(+)
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--- a/drivers/mtd/nand/spi/winbond.c
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+++ b/drivers/mtd/nand/spi/winbond.c
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@@ -74,6 +74,72 @@ static int w25m02gv_select_target(struct
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return spi_mem_exec_op(spinand->spimem, &op);
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}
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+static int w25n02kv_ooblayout_ecc(struct mtd_info *mtd, int section,
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+ struct mtd_oob_region *region)
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+{
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+ if (section > 3)
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+ return -ERANGE;
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+
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+ region->offset = 64 + (16 * section);
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+ region->length = 13;
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+
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+ return 0;
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+}
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+
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+static int w25n02kv_ooblayout_free(struct mtd_info *mtd, int section,
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+ struct mtd_oob_region *region)
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+{
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+ if (section > 3)
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+ return -ERANGE;
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+
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+ region->offset = (16 * section) + 2;
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+ region->length = 14;
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+
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+ return 0;
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+}
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+
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+static const struct mtd_ooblayout_ops w25n02kv_ooblayout = {
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+ .ecc = w25n02kv_ooblayout_ecc,
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+ .free = w25n02kv_ooblayout_free,
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+};
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+
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+static int w25n02kv_ecc_get_status(struct spinand_device *spinand,
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+ u8 status)
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+{
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+ struct nand_device *nand = spinand_to_nand(spinand);
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+ u8 mbf = 0;
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+ struct spi_mem_op op = SPINAND_GET_FEATURE_OP(0x30, &mbf);
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+
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+ switch (status & STATUS_ECC_MASK) {
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+ case STATUS_ECC_NO_BITFLIPS:
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+ return 0;
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+
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+ case STATUS_ECC_UNCOR_ERROR:
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+ return -EBADMSG;
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+
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+ case STATUS_ECC_HAS_BITFLIPS:
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+ /*
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+ * Let's try to retrieve the real maximum number of bitflips
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+ * in order to avoid forcing the wear-leveling layer to move
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+ * data around if it's not necessary.
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+ */
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+ if (spi_mem_exec_op(spinand->spimem, &op))
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+ return nanddev_get_ecc_conf(nand)->strength;
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+
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+ mbf >>= 4;
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+
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+ if (WARN_ON(mbf > nanddev_get_ecc_conf(nand)->strength || !mbf))
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+ return nanddev_get_ecc_conf(nand)->strength;
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+
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+ return mbf;
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+
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+ default:
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+ break;
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+ }
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+
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+ return -EINVAL;
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+}
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+
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static const struct spinand_info winbond_spinand_table[] = {
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SPINAND_INFO("W25M02GV",
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SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xab, 0x21),
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@@ -94,6 +160,15 @@ static const struct spinand_info winbond
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&update_cache_variants),
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0,
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SPINAND_ECCINFO(&w25m02gv_ooblayout, NULL)),
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+ SPINAND_INFO("W25N02KV",
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+ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0xaa, 0x22),
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+ NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1),
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+ NAND_ECCREQ(8, 512),
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+ SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
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+ &write_cache_variants,
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+ &update_cache_variants),
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+ 0,
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+ SPINAND_ECCINFO(&w25n02kv_ooblayout, w25n02kv_ecc_get_status)),
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};
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static int winbond_spinand_init(struct spinand_device *spinand)
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