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--- a/drivers/mtd/nand/spi/Makefile
+++ b/drivers/mtd/nand/spi/Makefile
@@ -1,3 +1,3 @@
# SPDX-License-Identifier: GPL-2.0
-spinand-objs := core.o esmt.o gigadevice.o macronix.o micron.o paragon.o toshiba.o winbond.o xtx.o
+spinand-objs := core.o esmt.o etron.o gigadevice.o macronix.o micron.o paragon.o toshiba.o winbond.o xtx.o
obj-$(CONFIG_MTD_SPI_NAND) += spinand.o
--- a/drivers/mtd/nand/spi/core.c
+++ b/drivers/mtd/nand/spi/core.c
@@ -898,6 +898,7 @@ static const struct nand_ops spinand_ops
static const struct spinand_manufacturer *spinand_manufacturers[] = {
&esmt_c8_spinand_manufacturer,
&gigadevice_spinand_manufacturer,
+ &etron_spinand_manufacturer,
¯onix_spinand_manufacturer,
µn_spinand_manufacturer,
¶gon_spinand_manufacturer,
--- /dev/null
+++ b/drivers/mtd/nand/spi/etron.c
@@ -0,0 +1,98 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/mtd/spinand.h>
+
+#define SPINAND_MFR_ETRON 0xd5
+
+
+static SPINAND_OP_VARIANTS(read_cache_variants,
+ SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 1, NULL, 0),
+ SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),
+ SPINAND_PAGE_READ_FROM_CACHE_DUALIO_OP(0, 1, NULL, 0),
+ SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0),
+ SPINAND_PAGE_READ_FROM_CACHE_OP(true, 0, 1, NULL, 0),
+ SPINAND_PAGE_READ_FROM_CACHE_OP(false, 0, 1, NULL, 0));
+
+static SPINAND_OP_VARIANTS(write_cache_variants,
+ SPINAND_PROG_LOAD_X4(true, 0, NULL, 0),
+ SPINAND_PROG_LOAD(true, 0, NULL, 0));
+
+static SPINAND_OP_VARIANTS(update_cache_variants,
+ SPINAND_PROG_LOAD_X4(false, 0, NULL, 0),
+ SPINAND_PROG_LOAD(false, 0, NULL, 0));
+
+static int etron_ooblayout_ecc(struct mtd_info *mtd, int section,
+ struct mtd_oob_region *oobregion)
+{
+ if (section)
+ return -ERANGE;
+
+ oobregion->offset = 72;
+ oobregion->length = 56;
+
+ return 0;
+}
+
+static int etron_ooblayout_free(struct mtd_info *mtd, int section,
+ struct mtd_oob_region *oobregion)
+{
+ if (section)
+ return -ERANGE;
+
+ oobregion->offset = 1;
+ oobregion->length = 71;
+
+ return 0;
+}
+
+static int etron_ecc_get_status(struct spinand_device *spinand, u8 status)
+{
+ switch (status & STATUS_ECC_MASK) {
+ case STATUS_ECC_NO_BITFLIPS:
+ return 0;
+
+ case STATUS_ECC_HAS_BITFLIPS:
+ /* Between 1-7 bitflips were corrected */
+ return 7;
+
+ case STATUS_ECC_MASK:
+ /* Maximum bitflips were corrected */
+ return 8;
+
+ case STATUS_ECC_UNCOR_ERROR:
+ return -EBADMSG;
+ }
+
+ return -EINVAL;
+}
+
+static const struct mtd_ooblayout_ops etron_ooblayout = {
+ .ecc = etron_ooblayout_ecc,
+ .free = etron_ooblayout_free,
+};
+
+static const struct spinand_info etron_spinand_table[] = {
+ SPINAND_INFO("EM73D044VCx",
+ SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x1f),
+ // bpc, pagesize, oobsize, pagesperblock, bperlun, maxbadplun, ppl, lpt, #t
+ NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 1, 1, 1),
+ NAND_ECCREQ(8, 512),
+ SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
+ &write_cache_variants,
+ &update_cache_variants),
+ SPINAND_HAS_QE_BIT,
+ SPINAND_ECCINFO(&etron_ooblayout, etron_ecc_get_status)),
+};
+
+static const struct spinand_manufacturer_ops etron_spinand_manuf_ops = {
+};
+
+const struct spinand_manufacturer etron_spinand_manufacturer = {
+ .id = SPINAND_MFR_ETRON,
+ .name = "Etron",
+ .chips = etron_spinand_table,
+ .nchips = ARRAY_SIZE(etron_spinand_table),
+ .ops = &etron_spinand_manuf_ops,
+};
--- a/include/linux/mtd/spinand.h
+++ b/include/linux/mtd/spinand.h
@@ -261,6 +261,7 @@ struct spinand_manufacturer {
/* SPI NAND manufacturers */
extern const struct spinand_manufacturer esmt_c8_spinand_manufacturer;
+extern const struct spinand_manufacturer etron_spinand_manufacturer;
extern const struct spinand_manufacturer gigadevice_spinand_manufacturer;
extern const struct spinand_manufacturer macronix_spinand_manufacturer;
extern const struct spinand_manufacturer micron_spinand_manufacturer;
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