From: Mason Yang <masonccyang@mxic.com.tw>
To: broonie@kernel.org, miquel.raynal@bootlin.com, richard@nod.at,
marek.vasut@gmail.com, dwmw2@infradead.org,
computersforpeace@gmail.com, vigneshr@ti.com,
bbrezillon@kernel.org, tudor.ambarus@microchip.com
Cc: juliensu@mxic.com.tw, linux-kernel@vger.kernel.org,
linux-mtd@lists.infradead.org, linux-spi@vger.kernel.org,
Mason Yang <masonccyang@mxic.com.tw>
Subject: [PATCH 0/4] mtd: spi-nor: Add support for Octal 8D-8D-8D mode
Date: Fri, 15 Nov 2019 16:58:04 +0800 [thread overview]
Message-ID: <1573808288-19365-1-git-send-email-masonccyang@mxic.com.tw> (raw)
Hello,
This is repost of patchset from Boris Brezillon's
[RFC,00/18] mtd: spi-nor: Proposal for 8-8-8 mode support [1].
Background from cover letter for RFC[1].
The trend has been around Octal NOR Flash lately and the latest mainline
already supports 1-1-8 and 1-8-8 modes.
Boris opened a discussion on how we should support stateful modes (X-X-X
and XD-XD-XD, where X is the bus width and D means Double Transfer Rate).
JESD216C has defined specification for Octal 8-8-8 and 8D-8D-8D.
It defined command and command extension in
JEDEC Basic Flash Parameter Table(18th DWORD) as well as how to
enable 8-8-8/8D-8D-8D mode sequences (Write CFG Reg 2).
The first set of patches is according to JESD216C adding Double Transfer
Rate(DTR) fields, extension command and command bytes number to the
spi_mem_op struct.
The second set of patches define the relevant macrons and enum in spi-nor
layer for Octal 8-8-8 and 8D-8D-8D mode operation.
The last set of patches in the series are modifying spi_nor_fixups hook to
tweak flash parameters for spi_nor_read/pp_setting() and then in a
chip-specific way to enter 8-8-8 or 8D-8D-8D modes on a Macronix chip.
Also patched spi-mxic driver for testing on Macronix's Zynq PicoZed board
with Macronix's SPI controller (spi-mxic.c) and mx25uw51245g Octal flash.
[1] https://patchwork.ozlabs.org/cover/982926/
thnaks for your time and review.
best regards,
Mason
Mason Yang (4):
spi: spi-mem: Add support for Octal 8D-8D-8D mode
mtd: spi-nor: Add support for Octal 8D-8D-8D mode
mtd: spi-nor: Add Octal 8D-8D-8D mode support for Macronix
mx25uw51245g
spi: mxic: Add support for Octal 8D-8D-8D mode
drivers/mtd/spi-nor/spi-nor.c | 273 +++++++++++++++++++++++++++++++++++++++++-
drivers/spi/spi-mem.c | 8 +-
drivers/spi/spi-mxic.c | 98 ++++++++++-----
include/linux/mtd/spi-nor.h | 61 +++++++++-
include/linux/spi/spi-mem.h | 13 ++
5 files changed, 410 insertions(+), 43 deletions(-)
--
1.9.1
next reply other threads:[~2019-11-15 8:58 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-15 8:58 Mason Yang [this message]
2019-11-15 8:58 ` [PATCH 1/4] spi: spi-mem: Add support for Octal 8D-8D-8D mode Mason Yang
2019-11-15 8:58 ` [PATCH 2/4] mtd: spi-nor: " Mason Yang
2019-11-15 12:30 ` kbuild test robot
2019-11-15 13:42 ` kbuild test robot
2019-12-04 12:46 ` Vignesh Raghavendra
2019-12-09 7:56 ` masonccyang
2019-12-09 9:53 ` Vignesh Raghavendra
2019-12-10 7:21 ` masonccyang
2019-11-15 8:58 ` [PATCH 3/4] mtd: spi-nor: Add Octal 8D-8D-8D mode support for Macronix mx25uw51245g Mason Yang
2019-12-04 13:03 ` Vignesh Raghavendra
2019-12-09 6:38 ` masonccyang
2019-11-15 8:58 ` [PATCH 4/4] spi: mxic: Add support for Octal 8D-8D-8D mode Mason Yang
2019-11-15 14:39 ` kbuild test robot
2019-11-16 7:20 ` kbuild test robot
2019-12-10 17:00 ` [PATCH 0/4] mtd: spi-nor: " Tudor.Ambarus
2019-12-11 2:14 ` masonccyang
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