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0xFelixmiquelraynal
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mtd: spinand: Add support for XTX XT26G0xA
Add support for XTX Technology XT26G01AXXXXX, XTX26G02AXXXXX and XTX26G04AXXXXX SPI NAND. These are 3V, 1G/2G/4Gbit serial SLC NAND flash devices with on-die ECC (8bit strength per 512bytes). Tested on Teltonika RUTX10 flashed with OpenWrt. Links: - http://www.xtxtech.com/download/?AId=225 - https://datasheet.lcsc.com/szlcsc/2005251034_XTX-XT26G01AWSEGA_C558841.pdf Signed-off-by: Felix Matouschek <felix@matouschek.org> Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Link: https://lore.kernel.org/linux-mtd/20220418132803.664103-1-felix@matouschek.org
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4 files changed

Lines changed: 132 additions & 1 deletion

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‎drivers/mtd/nand/spi/Makefile‎

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Original file line numberDiff line numberDiff line change
@@ -1,3 +1,3 @@
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# SPDX-License-Identifier: GPL-2.0
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spinand-objs := core.o gigadevice.o macronix.o micron.o paragon.o toshiba.o winbond.o
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spinand-objs := core.o gigadevice.o macronix.o micron.o paragon.o toshiba.o winbond.o xtx.o
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obj-$(CONFIG_MTD_SPI_NAND) += spinand.o

‎drivers/mtd/nand/spi/core.c‎

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Original file line numberDiff line numberDiff line change
@@ -933,6 +933,7 @@ static const struct spinand_manufacturer *spinand_manufacturers[] = {
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&paragon_spinand_manufacturer,
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&toshiba_spinand_manufacturer,
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&winbond_spinand_manufacturer,
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&xtx_spinand_manufacturer,
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};
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static int spinand_manufacturer_match(struct spinand_device *spinand,

‎drivers/mtd/nand/spi/xtx.c‎

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@@ -0,0 +1,129 @@
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// SPDX-License-Identifier: GPL-2.0
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/*
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* Author:
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* Felix Matouschek <felix@matouschek.org>
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*/
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#include <linux/device.h>
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#include <linux/kernel.h>
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#include <linux/mtd/spinand.h>
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#define SPINAND_MFR_XTX 0x0B
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#define XT26G0XA_STATUS_ECC_MASK GENMASK(5, 2)
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#define XT26G0XA_STATUS_ECC_NO_DETECTED (0 << 2)
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#define XT26G0XA_STATUS_ECC_8_CORRECTED (3 << 4)
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#define XT26G0XA_STATUS_ECC_UNCOR_ERROR (2 << 4)
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static SPINAND_OP_VARIANTS(read_cache_variants,
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SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 1, NULL, 0),
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SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),
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SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0),
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SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0),
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SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0),
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SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0));
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static SPINAND_OP_VARIANTS(write_cache_variants,
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SPINAND_PROG_LOAD_X4(true, 0, NULL, 0),
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SPINAND_PROG_LOAD(true, 0, NULL, 0));
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static SPINAND_OP_VARIANTS(update_cache_variants,
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SPINAND_PROG_LOAD_X4(false, 0, NULL, 0),
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SPINAND_PROG_LOAD(false, 0, NULL, 0));
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static int xt26g0xa_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)
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return -ERANGE;
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region->offset = 48;
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region->length = 16;
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return 0;
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}
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static int xt26g0xa_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)
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return -ERANGE;
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region->offset = 1;
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region->length = 47;
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return 0;
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}
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static const struct mtd_ooblayout_ops xt26g0xa_ooblayout = {
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.ecc = xt26g0xa_ooblayout_ecc,
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.free = xt26g0xa_ooblayout_free,
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};
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static int xt26g0xa_ecc_get_status(struct spinand_device *spinand,
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u8 status)
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{
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status = status & XT26G0XA_STATUS_ECC_MASK;
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switch (status) {
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case XT26G0XA_STATUS_ECC_NO_DETECTED:
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return 0;
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case XT26G0XA_STATUS_ECC_8_CORRECTED:
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return 8;
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case XT26G0XA_STATUS_ECC_UNCOR_ERROR:
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return -EBADMSG;
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default:
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break;
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}
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/* At this point values greater than (2 << 4) are invalid */
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if (status > XT26G0XA_STATUS_ECC_UNCOR_ERROR)
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return -EINVAL;
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/* (1 << 2) through (7 << 2) are 1-7 corrected errors */
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return status >> 2;
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}
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static const struct spinand_info xtx_spinand_table[] = {
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SPINAND_INFO("XT26G01A",
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SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0xE1),
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NAND_MEMORG(1, 2048, 64, 64, 1024, 20, 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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SPINAND_HAS_QE_BIT,
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SPINAND_ECCINFO(&xt26g0xa_ooblayout,
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xt26g0xa_ecc_get_status)),
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SPINAND_INFO("XT26G02A",
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SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0xE2),
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NAND_MEMORG(1, 2048, 64, 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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SPINAND_HAS_QE_BIT,
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SPINAND_ECCINFO(&xt26g0xa_ooblayout,
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xt26g0xa_ecc_get_status)),
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SPINAND_INFO("XT26G04A",
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SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0xE3),
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NAND_MEMORG(1, 2048, 64, 128, 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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SPINAND_HAS_QE_BIT,
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SPINAND_ECCINFO(&xt26g0xa_ooblayout,
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xt26g0xa_ecc_get_status)),
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};
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static const struct spinand_manufacturer_ops xtx_spinand_manuf_ops = {
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};
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const struct spinand_manufacturer xtx_spinand_manufacturer = {
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.id = SPINAND_MFR_XTX,
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.name = "XTX",
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.chips = xtx_spinand_table,
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.nchips = ARRAY_SIZE(xtx_spinand_table),
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.ops = &xtx_spinand_manuf_ops,
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};

‎include/linux/mtd/spinand.h‎

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Original file line numberDiff line numberDiff line change
@@ -266,6 +266,7 @@ extern const struct spinand_manufacturer micron_spinand_manufacturer;
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extern const struct spinand_manufacturer paragon_spinand_manufacturer;
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extern const struct spinand_manufacturer toshiba_spinand_manufacturer;
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extern const struct spinand_manufacturer winbond_spinand_manufacturer;
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extern const struct spinand_manufacturer xtx_spinand_manufacturer;
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/**
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* struct spinand_op_variants - SPI NAND operation variants

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