[PATCH v4 0/3] mtd: spi-nor: Extend SFDP to support additional octal modes as per latest JEDEC standard - Nathan Barrett-Morrison

From: Nathan Barrett-Morrison <nathan.morrison@timesys.com>
To: unlisted-recipients:; (no To-header on input)
Cc: nathan.morrison@timesys.com, greg.malysa@timesys.com,
	Tudor Ambarus <tudor.ambarus@microchip.com>,
	Pratyush Yadav <pratyush@kernel.org>,
	Michael Walle <michael@walle.cc>,
	Miquel Raynal <miquel.raynal@bootlin.com>,
	Richard Weinberger <richard@nod.at>,
	Vignesh Raghavendra <vigneshr@ti.com>,
	linux-mtd@lists.infradead.org (open list:SPI NOR SUBSYSTEM),
	linux-kernel@vger.kernel.org (open list)
Subject: [PATCH v4 0/3] mtd: spi-nor: Extend SFDP to support additional octal modes as per latest JEDEC standard
Date: Fri,  2 Dec 2022 08:55:36 -0500	[thread overview]
Message-ID: <20221202135539.271936-1-nathan.morrison@timesys.com> (raw)

In the latest JEDEC standard (JESD216F), there are now bitfields in the
4 byte address instruction table for 1S-1S-8S and 1S-8S-8S modes.

This patchset adds support for checking the 4BAIT for these modes.

v2: Move page program commands into sfdp.c instead of core.c,
as this appears to conform more closely with spi-nor paradigm.
Page program buswidth appears to be automatically determined, so let's
follow suit and do the same.

v3:
 - Added missing SPI_NOR_OCTAL_READ_1_8_8 to spi_nor_sfdp check in
   spi_nor_init_params_deprecated()
 - Convert IS25LX256 to 1S-8S-8S instead of 1S-1S-8S
 - Tested and confirmed both 1S-1S-8S and 1S-8S-8S work on IS25LX256

v4:
 - Remove SPI_NOR_OCTAL_READ_1_8_8, this was following a defunct path
 - Correct the IS25LX256's missing BFPT info via a fixup instead

Nathan Barrett-Morrison (3):
  mtd: spi-nor: Extend SFDP 4byte address instruction lookup table with
    new octal modes as per JEDEC JESD216F
  mtd: spi-nor: Add additional octal-mode page program flags to be
    checked during SFDP 4BAIT parsing
  mtd: spi-nor: Add support for IS25LX256 operating in 1S-8S-8S octal
    read mode

 drivers/mtd/spi-nor/issi.c | 32 ++++++++++++++++++++++++++++++++
 drivers/mtd/spi-nor/sfdp.c | 13 +++++++++++++
 2 files changed, 45 insertions(+)

-- 
2.30.2