linux-kernel - [PATCH 00/13] mtd: spinand: Add Octal DTR SPI (8D-8D-8D) mode support

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Date:   Tue, 13 Jul 2021 13:05:25 +0000
From:   Apurva Nandan <a-nandan@...com>
To:     Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        Mark Brown <broonie@...nel.org>,
        Patrice Chotard <patrice.chotard@...s.st.com>,
        Boris Brezillon <boris.brezillon@...labora.com>,
        <linux-mtd@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        <linux-spi@...r.kernel.org>
CC:     Apurva Nandan <a-nandan@...com>, Pratyush Yadav <p.yadav@...com>
Subject: [PATCH 00/13] mtd: spinand: Add Octal DTR SPI (8D-8D-8D) mode support

Hi,
This series proposes patches for adding the following functionality
in SPI NAND core:

- Octal DTR SPI (8D-8D-8D) mode support

- Winbond W35N01JW SPI NAND chip support

- Power-on-Reset instruction support

This series has been tested on TI J721e EVM with the Winbond W35N01JW
flash with following test utilities:

- nandtest
  Test log: https://textbin.net/raw/fhypoz63f9

- mtd_stresstest
  Test log: https://textbin.net/raw/0xqjmqntj7

- UBIFS LTP stress test (NAND_XL_STRESS_DD_RW_UBIFS).
  Test log: https://textbin.net/raw/pyokws7wku

Datasheet: https://www.winbond.com/export/sites/winbond/datasheet/W35N01JW_Datasheet_Brief.pdf

Apurva Nandan (13):
  spi: spi-mem: Add DTR templates for cmd, address, dummy and data phase
  mtd: spinand: Add enum spinand_proto to indicate current SPI IO mode
  mtd: spinand: Setup spi_mem_op for the SPI IO protocol using reg_proto
  mtd: spinand: Fix odd byte addr and data phase in read/write reg op
    and write VCR op for Octal DTR mode
  mtd: spinand: Add adjust_op() in manufacturer_ops to modify the ops
    for manufacturer specific changes
  mtd: spinand: Add macros for Octal DTR page read and write operations
  mtd: spinand: Allow enabling Octal DTR mode in the core
  mtd: spinand: Reject 8D-8D-8D op_templates if octal_dtr_enale() is
    missing in manufacturer_op
  mtd: spinand: Add support for write volatile configuration register op
  mtd: spinand: Add octal_dtr_enable() for Winbond manufacturer_ops
  mtd: spinand: Add support for Power-on-Reset (PoR) instruction
  mtd: spinand: Perform Power-on-Reset when runtime_pm suspend is issued
  mtd: spinand: Add support for Winbond W35N01JW SPI NAND flash

 drivers/mtd/nand/spi/core.c    | 196 +++++++++++++++++++++++++++++++--
 drivers/mtd/nand/spi/winbond.c | 186 +++++++++++++++++++++++++++++--
 include/linux/mtd/spinand.h    |  67 +++++++++++
 include/linux/spi/spi-mem.h    |  87 ++++++++++-----
 4 files changed, 494 insertions(+), 42 deletions(-)

-- 
2.17.1