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mtd: spinand: Support skyhigh

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S35ML02G3, S35ML04G3

Change-Id: Ie6b0bbba85bb6d646af3534b10107e8efb84a62a
Signed-off-by: Jon Lin <jon.lin@rock-chips.com>
This commit is contained in:
Jon Lin 2023-01-03 14:50:24 +08:00 • committed by Tao Huang
commit 246e60c8a0
4 changed files with 111 additions and 1 deletions
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2
drivers/mtd/nand/spi/Makefile
View file

@ -1,3 +1,3 @@
# SPDX-License-Identifier: GPL-2.0
spinand-objs := core.o gigadevice.o macronix.o micron.o paragon.o toshiba.o winbond.o biwin.o dosilicon.o esmt.o etron.o fmsh.o foresee.o hyf.o jsc.o silicongo.o unim.o xtx.o
spinand-objs := core.o gigadevice.o macronix.o micron.o paragon.o toshiba.o winbond.o biwin.o dosilicon.o esmt.o etron.o fmsh.o foresee.o hyf.o jsc.o silicongo.o skyhigh.o unim.o xtx.o
obj-$(CONFIG_MTD_SPI_NAND) += spinand.o

1
drivers/mtd/nand/spi/core.c
View file

@ -862,6 +862,7 @@ static const struct spinand_manufacturer *spinand_manufacturers[] = {
&micron_spinand_manufacturer,
&paragon_spinand_manufacturer,
&silicongo_spinand_manufacturer,
&skyhigh_spinand_manufacturer,
&toshiba_spinand_manufacturer,
&unim_spinand_manufacturer,
&winbond_spinand_manufacturer,

108
drivers/mtd/nand/spi/skyhigh.c Normal file
View file

@ -0,0 +1,108 @@
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* Copyright (c) 2021 Rockchip Electronics Co., Ltd.
*/
#include <linux/device.h>
#include <linux/kernel.h>
#include <linux/mtd/spinand.h>
#define SPINAND_MFR_SKYHIGH 0x01
#define SKYHIGH_STATUS_ECC_1_2_BITFLIPS (1 << 4)
#define SKYHIGH_STATUS_ECC_3_4_BITFLIPS (2 << 4)
#define SKYHIGH_STATUS_ECC_UNCOR_ERROR (3 << 4)
static SPINAND_OP_VARIANTS(read_cache_variants,
SPINAND_PAGE_READ_FROM_CACHE_QUADIO_OP(0, 2, 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 s35ml04g3_ooblayout_ecc(struct mtd_info *mtd, int section,
struct mtd_oob_region *region)
{
return -ERANGE;
}
static int s35ml04g3_ooblayout_free(struct mtd_info *mtd, int section,
struct mtd_oob_region *region)
{
if (section)
return -ERANGE;
region->offset = 2;
region->length = mtd->oobsize - 2;
return 0;
}
static const struct mtd_ooblayout_ops s35ml04g3_ooblayout = {
.ecc = s35ml04g3_ooblayout_ecc,
.free = s35ml04g3_ooblayout_free,
};
static int s35ml0xg3_ecc_get_status(struct spinand_device *spinand,
u8 status)
{
struct nand_device *nand = spinand_to_nand(spinand);
switch (status & STATUS_ECC_MASK) {
case STATUS_ECC_NO_BITFLIPS:
return 0;
case SKYHIGH_STATUS_ECC_UNCOR_ERROR:
return -EBADMSG;
case SKYHIGH_STATUS_ECC_1_2_BITFLIPS:
return 2;
default:
return nanddev_get_ecc_requirements(nand)->strength;
}
return -EINVAL;
}
static const struct spinand_info skyhigh_spinand_table[] = {
SPINAND_INFO("S35ML02G3",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x25),
NAND_MEMORG(1, 2048, 128, 64, 2048, 40, 2, 1, 1),
NAND_ECCREQ(4, 512),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
&write_cache_variants,
&update_cache_variants),
SPINAND_HAS_QE_BIT,
SPINAND_ECCINFO(&s35ml04g3_ooblayout, s35ml0xg3_ecc_get_status)),
SPINAND_INFO("S35ML04G3",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_DUMMY, 0x35),
NAND_MEMORG(1, 2048, 128, 64, 4096, 80, 2, 1, 1),
NAND_ECCREQ(4, 512),
SPINAND_INFO_OP_VARIANTS(&read_cache_variants,
&write_cache_variants,
&update_cache_variants),
SPINAND_HAS_QE_BIT,
SPINAND_ECCINFO(&s35ml04g3_ooblayout, s35ml0xg3_ecc_get_status)),
};
static const struct spinand_manufacturer_ops skyhigh_spinand_manuf_ops = {
};
const struct spinand_manufacturer skyhigh_spinand_manufacturer = {
.id = SPINAND_MFR_SKYHIGH,
.name = "skyhigh",
.chips = skyhigh_spinand_table,
.nchips = ARRAY_SIZE(skyhigh_spinand_table),
.ops = &skyhigh_spinand_manuf_ops,
};

1
include/linux/mtd/spinand.h
View file

@ -252,6 +252,7 @@ extern const struct spinand_manufacturer micron_spinand_manufacturer;
extern const struct spinand_manufacturer paragon_spinand_manufacturer;
extern const struct spinand_manufacturer toshiba_spinand_manufacturer;
extern const struct spinand_manufacturer silicongo_spinand_manufacturer;
extern const struct spinand_manufacturer skyhigh_spinand_manufacturer;
extern const struct spinand_manufacturer unim_spinand_manufacturer;
extern const struct spinand_manufacturer winbond_spinand_manufacturer;
extern const struct spinand_manufacturer xtx_spinand_manufacturer;