linux-kernel - [PATCH v4 0/6] mtd: spinand: add OTP support

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Message-ID: <20250127153848.199526-1-mmkurbanov@salutedevices.com>
Date: Mon, 27 Jan 2025 18:38:18 +0300
From: Martin Kurbanov <mmkurbanov@...utedevices.com>
To: Miquel Raynal <miquel.raynal@...tlin.com>, Richard Weinberger
	<richard@....at>, Vignesh Raghavendra <vigneshr@...com>, Ezra Buehler
	<ezra.buehler@...qvarnagroup.com>, Cheng Ming Lin <chengminglin@...c.com.tw>,
	Pratyush Yadav <pratyush@...nel.org>, Daniel Golle <daniel@...rotopia.org>,
	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 v4 0/6] mtd: spinand: add OTP support

This patchset implements the SPI-NAND OTP functions to allow access to
the SPI-NAND OTP data.
Specific support is added for Micron MT29F2G01ABAGD and ESMT F50L1G41LB/
F50D1G41LB flash chips.

Changelog:
  v4 since v3 at [1]:
    - Support for factory OTP

  v3 since v2 at [2]:
    - Make cosmetic changes (Miquel Raynal)
    - Separate patch to introduce helper functions
    - Use dev_warn() instead of pr_warn()/WARN()
    - New patch for introducing the start_page field when defining OTP
    - Use mem_is_zero()

  v2 since v1 at [3]:
    - Make cosmetic changes (Miquel Raynal)

Links:
  [1] https://lore.kernel.org/all/20241226135623.43098-1-mmkurbanov@salutedevices.com/
  [2] https://lore.kernel.org/all/20240827174920.316756-1-mmkurbanov@salutedevices.com/
  [3] https://lore.kernel.org/all/20240617133504.179705-1-mmkurbanov@salutedevices.com/

Martin Kurbanov (6):
  mtd: spinand: make spinand_{read,write}_page global
  mtd: spinand: add OTP support
  mtd: spinand: make spinand_{wait,otp_page_size} global
  mtd: spinand: otp: add helpers functions
  mtd: spinand: micron: OTP access for MT29F2G01ABAGD
  mtd: spinand: esmt: OTP access for F50{L,D}1G41LB

 drivers/mtd/nand/spi/Makefile |   3 +-
 drivers/mtd/nand/spi/core.c   |  50 ++++-
 drivers/mtd/nand/spi/esmt.c   |  90 ++++++++-
 drivers/mtd/nand/spi/micron.c | 135 ++++++++++++-
 drivers/mtd/nand/spi/otp.c    | 362 ++++++++++++++++++++++++++++++++++
 include/linux/mtd/spinand.h   | 110 +++++++++++
 6 files changed, 738 insertions(+), 12 deletions(-)
 create mode 100644 drivers/mtd/nand/spi/otp.c

-- 
2.43.0