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Message-ID: <20240617133504.179705-6-mmkurbanov@salutedevices.com>
Date: Mon, 17 Jun 2024 16:34:57 +0300
From: Martin Kurbanov <mmkurbanov@...utedevices.com>
To: Miquel Raynal <miquel.raynal@...tlin.com>, Richard Weinberger
<richard@....at>, Vignesh Raghavendra <vigneshr@...com>, Mika Westerberg
<mika.westerberg@...ux.intel.com>, Michael Walle <michael@...le.cc>, Mark
Brown <broonie@...nel.org>, Chia-Lin Kao <acelan.kao@...onical.com>, Md Sadre
Alam <quic_mdalam@...cinc.com>, Ezra Buehler
<ezra.buehler@...qvarnagroup.com>, Sridharan S N <quic_sridsn@...cinc.com>,
Frieder Schrempf <frieder.schrempf@...tron.de>, Alexey Romanov
<avromanov@...utedevices.com>
CC: <linux-kernel@...r.kernel.org>, <linux-mtd@...ts.infradead.org>,
<kernel@...utedevices.com>, Martin Kurbanov <mmkurbanov@...utedevices.com>
Subject: [PATCH v1 5/5] mtd: spinand: esmt: OTP access for F50{L,D}1G41LB
Support for OTP area access on ESMT F50L1G41LB and F50D1G41LB chips.
Signed-off-by: Martin Kurbanov <mmkurbanov@...utedevices.com>
---
drivers/mtd/nand/spi/esmt.c | 69 +++++++++++++++++++++++++++++++++++--
1 file changed, 67 insertions(+), 2 deletions(-)
diff --git a/drivers/mtd/nand/spi/esmt.c b/drivers/mtd/nand/spi/esmt.c
index 4597a82de23a4..1806e9d48c176 100644
--- a/drivers/mtd/nand/spi/esmt.c
+++ b/drivers/mtd/nand/spi/esmt.c
@@ -12,6 +12,13 @@
/* ESMT uses GigaDevice 0xc8 JECDEC ID on some SPI NANDs */
#define SPINAND_MFR_ESMT_C8 0xc8
+#define ESMT_F50L1G41LB_CFG_OTP_PROTECT BIT(7)
+#define ESMT_F50L1G41LB_CFG_OTP_LOCK \
+ (CFG_OTP_ENABLE | ESMT_F50L1G41LB_CFG_OTP_PROTECT)
+
+#define ESMT_F50L1G41LB_PAGE_SIZE 2112
+#define ESMT_F50L1G41LB_OTP_PAGES 28
+
static SPINAND_OP_VARIANTS(read_cache_variants,
SPINAND_PAGE_READ_FROM_CACHE_X4_OP(0, 1, NULL, 0),
SPINAND_PAGE_READ_FROM_CACHE_X2_OP(0, 1, NULL, 0),
@@ -102,6 +109,60 @@ static const struct mtd_ooblayout_ops f50l1g41lb_ooblayout = {
.free = f50l1g41lb_ooblayout_free,
};
+static int f50l1g41lb_otp_info(struct spinand_device *spinand, size_t len,
+ struct otp_info *buf, size_t *retlen)
+{
+ if (len < sizeof(*buf))
+ return -EINVAL;
+
+ buf->locked = 0;
+ buf->start = 0;
+ buf->length = ESMT_F50L1G41LB_PAGE_SIZE * ESMT_F50L1G41LB_OTP_PAGES;
+
+ *retlen = sizeof(*buf);
+ return 0;
+}
+
+static int f50l1g41lb_otp_lock(struct spinand_device *spinand, loff_t from,
+ size_t len)
+{
+ struct spi_mem_op write_op = SPINAND_WR_EN_DIS_OP(true);
+ struct spi_mem_op exec_op = SPINAND_PROG_EXEC_OP(0);
+ int ret;
+
+ ret = spinand_upd_cfg(spinand, ESMT_F50L1G41LB_CFG_OTP_LOCK,
+ ESMT_F50L1G41LB_CFG_OTP_LOCK);
+ if (!ret)
+ return ret;
+
+ ret = spi_mem_exec_op(spinand->spimem, &write_op);
+ if (!ret)
+ goto out;
+
+ ret = spi_mem_exec_op(spinand->spimem, &exec_op);
+ if (!ret)
+ goto out;
+
+ ret = spinand_wait(spinand, 10, 5, NULL);
+ if (!ret)
+ goto out;
+
+out:
+ if (spinand_upd_cfg(spinand, ESMT_F50L1G41LB_CFG_OTP_LOCK, 0)) {
+ WARN(1, "Can not disable OTP mode\n");
+ ret = -EIO;
+ }
+
+ return ret;
+}
+
+static const struct spinand_otp_ops f50l1g41lb_otp_ops = {
+ .info = f50l1g41lb_otp_info,
+ .lock = f50l1g41lb_otp_lock,
+ .read = spinand_otp_read,
+ .write = spinand_otp_write,
+};
+
static const struct spinand_info esmt_c8_spinand_table[] = {
SPINAND_INFO("F50L1G41LB",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x01, 0x7f,
@@ -112,7 +173,9 @@ static const struct spinand_info esmt_c8_spinand_table[] = {
&write_cache_variants,
&update_cache_variants),
0,
- SPINAND_ECCINFO(&f50l1g41lb_ooblayout, NULL)),
+ SPINAND_ECCINFO(&f50l1g41lb_ooblayout, NULL),
+ SPINAND_OTP_INFO(ESMT_F50L1G41LB_OTP_PAGES,
+ &f50l1g41lb_otp_ops)),
SPINAND_INFO("F50D1G41LB",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x11, 0x7f,
0x7f, 0x7f),
@@ -122,7 +185,9 @@ static const struct spinand_info esmt_c8_spinand_table[] = {
&write_cache_variants,
&update_cache_variants),
0,
- SPINAND_ECCINFO(&f50l1g41lb_ooblayout, NULL)),
+ SPINAND_ECCINFO(&f50l1g41lb_ooblayout, NULL),
+ SPINAND_OTP_INFO(ESMT_F50L1G41LB_OTP_PAGES,
+ &f50l1g41lb_otp_ops)),
SPINAND_INFO("F50D2G41KA",
SPINAND_ID(SPINAND_READID_METHOD_OPCODE_ADDR, 0x51, 0x7f,
0x7f, 0x7f),
--
2.43.2
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