From: Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com>
To: "linux-mtd@lists.infradead.org" <linux-mtd@lists.infradead.org>,
"boris.brezillon@bootlin.com" <boris.brezillon@bootlin.com>,
"broonie@kernel.org" <broonie@kernel.org>,
"marek.vasut@gmail.com" <marek.vasut@gmail.com>,
"vigneshr@ti.com" <vigneshr@ti.com>,
"linux-spi@vger.kernel.org" <linux-spi@vger.kernel.org>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>
Cc: "mark.rutland@arm.com" <mark.rutland@arm.com>,
"robh@kernel.org" <robh@kernel.org>,
Yogesh Narayan Gaur <yogeshnarayan.gaur@nxp.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"frieder.schrempf@exceet.de" <frieder.schrempf@exceet.de>,
"computersforpeace@gmail.com" <computersforpeace@gmail.com>,
"shawnguo@kernel.org" <shawnguo@kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: [PATCH v3 0/7] spi: add support for octo mode
Date: Tue, 23 Oct 2018 09:37:00 +0000 [thread overview]
Message-ID: <1540287311-1572-1-git-send-email-yogeshnarayan.gaur@nxp.com> (raw)
Add support for octo mode IO data transfer.
Micron flash, mt35xu512aba, supports octal mode data transfer and
NXP FlexSPI controller supports 8 data lines for data transfer (Rx/Tx).
Patch series
* Add support for octo mode flags and parsing of same in spi driver.
* Add parsing logic for spi-mem framework and m25p80.c device file.
* Add opcodes for octo I/O commands in spi-nor framework, Read and Write proto for (1-1-8/1-8-8) mode.
Opcodes are added as per octal data IO commands required for mt35xu512aba [1] flash.
* Add mode bit required for octo mode in nxp-fspi driver [2].
* Define binding property 'spi-rx/tx-bus-width' for LX2160ARDB target [2].
Cherry pick below 2 patches (from: https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git):
c639f871febe6667d9afce28108c634e5636c735 spi: spi-mem: Fix inverted logic in op sanity check
db122eb8a749a1eff038f9a282c620ab16c4be1d spi: spi-mem: Add extra sanity checks on the op param
Tested on LX2160ARDB target with nxp-fspi driver, below are
Read performance number of 1-1-1 and 1-1-8 read protocol.
root@lxxx:~# cat /proc/mtd
dev: size erasesize name
mtd0: 04000000 00001000 "spi0.0"
mtd1: 04000000 00001000 "spi0.1"
root@lxxx:~# time mtd_debug read /dev/mtd0 0x0 0x1000000 0read
Copied 16777216 bytes from address 0x00000000 in flash to 0read
real 0m2.792s
user 0m0.000s
sys 0m2.790s
root@lxxx:~# time mtd_debug read /dev/mtd1 0x0 0x1000000 0read
Copied 16777216 bytes from address 0x00000000 in flash to 0read
real 0m0.441s
user 0m0.000s
sys 0m0.440s
root@ls1012ardb:~#
Flash device MTD0 configured in 1-1-1 protocol.
Flash device MTD1 configured in 1-1-8 protocol.
[1] https://patchwork.ozlabs.org/project/linux-mtd/list/?series=70384
[2] https://patchwork.ozlabs.org/project/linux-mtd/list/?series=72181
Yogesh Gaur (7):
spi: add support for octo mode I/O data transfer
spi: spi-mem: add support for octo mode I/O data transfer
mtd: spi-nor: add opcodes for octo Read/Write commands
mtd: spi-nor: add octo read flag for flash mt35xu512aba
mtd: m25p80: add support of octo mode I/O transfer
spi: nxp-fspi: add octo mode flag bit for octal support
arm64: dts: lx2160a: update fspi node
Changes for v3:
- Add octo mode support in spi_setup().
- Rename all patches with 'octal' string modified as 'octo'.
Changes for v2:
- Incorporated review comments of Boris and Vignesh.
arch/arm64/boot/dts/freescale/fsl-lx2160a-rdb.dts | 4 ++++
drivers/mtd/devices/m25p80.c | 9 ++++++++-
drivers/mtd/spi-nor/spi-nor.c | 15 ++++++++++++++-
drivers/spi/spi-mem.c | 9 ++++++++-
drivers/spi/spi-nxp-fspi.c | 4 ++--
drivers/spi/spi.c | 12 ++++++++++--
include/linux/mtd/spi-nor.h | 8 ++++++++
include/linux/spi/spi.h | 2 ++
8 files changed, 56 insertions(+), 7 deletions(-)
--
2.7.4
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next reply other threads:[~2018-10-23 9:37 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-23 9:37 Yogesh Narayan Gaur [this message]
2018-10-23 9:37 ` [PATCH v3 1/7] spi: add support for octo mode I/O data transfer Yogesh Narayan Gaur
2018-10-23 9:48 ` Boris Brezillon
2018-10-23 9:37 ` [PATCH v3 2/7] spi: spi-mem: " Yogesh Narayan Gaur
2018-10-23 9:49 ` Boris Brezillon
2018-10-23 9:37 ` [PATCH v3 3/7] mtd: spi-nor: add opcodes for octo Read/Write commands Yogesh Narayan Gaur
2018-10-23 9:37 ` [PATCH v3 4/7] mtd: spi-nor: add octo read flag for flash mt35xu512aba Yogesh Narayan Gaur
2018-10-23 9:37 ` [PATCH v3 5/7] mtd: m25p80: add support of octo mode I/O transfer Yogesh Narayan Gaur
2018-10-23 9:37 ` [PATCH v3 6/7] spi: nxp-fspi: add octo mode flag bit for octal support Yogesh Narayan Gaur
2018-10-23 9:37 ` [PATCH v3 7/7] arm64: dts: lx2160a: update fspi node Yogesh Narayan Gaur
2018-11-13 8:00 ` [PATCH v3 0/7] spi: add support for octo mode Vignesh R
2018-11-22 5:19 ` Yogesh Narayan Gaur
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