linux-kernel - [PATCH v3 0/3] mtd: spi-nor: Parse BFPT to determine the 4-Byte Address Mode

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Message-ID: <20220411125346.118274-1-tudor.ambarus@microchip.com>
Date:   Mon, 11 Apr 2022 15:53:43 +0300
From:   Tudor Ambarus <tudor.ambarus@...rochip.com>
To:     <p.yadav@...com>, <michael@...le.cc>
CC:     <miquel.raynal@...tlin.com>, <richard@....at>, <vigneshr@...com>,
        <linux-mtd@...ts.infradead.org>, <linux-kernel@...r.kernel.org>,
        <nicolas.ferre@...rochip.com>,
        Tudor Ambarus <tudor.ambarus@...rochip.com>
Subject: [PATCH v3 0/3] mtd: spi-nor: Parse BFPT to determine the 4-Byte Address Mode

Depends on:
https://lore.kernel.org/lkml/20220411091033.98754-1-tudor.ambarus@microchip.com/

Get the 4-Byte Address mode method from BFPT and favor it in the detriment
of the "default" set_4byte_addr_mode method or the methods set by vendors.
This may introduce some regressions if flashes have wrong BFPT data. The
fix is to introduce post_bfpt() hooks and fix where needed. We should let
the core/sfdp do the params initialization, and do vendor specific updates
just where needed.

v3:
- Move the newly introduced BFPT definitions in sfdp.h, as they may be used by
manufacturer drivers to handle flash ID collisions.
- Drop "mtd: spi-nor: sfdp: Keep SFDP definitions private" patch for the same
reason as above
- Collect R-b tags

v2: Drop quad enable patch

Tudor Ambarus (3):
  mtd: spi-nor: Parse BFPT to determine the 4-Byte Address Mode methods
  mtd: spi-nor: Update name and description of the set_4byte_addr_mode
    BFPT methods
  mtd: spi-nor: Favor the BFPT-parsed set_4byte_addr_mode method

 drivers/mtd/spi-nor/core.c      |  70 ++------------------
 drivers/mtd/spi-nor/core.h      |   1 -
 drivers/mtd/spi-nor/macronix.c  |   9 ++-
 drivers/mtd/spi-nor/micron-st.c |  32 ++-------
 drivers/mtd/spi-nor/sfdp.c      | 113 ++++++++++++++++++++++++++++++++
 drivers/mtd/spi-nor/sfdp.h      |  30 +++++++++
 drivers/mtd/spi-nor/winbond.c   |  18 +++--
 7 files changed, 174 insertions(+), 99 deletions(-)
-- 
2.25.1