linux-kernel - Re: [PATCH v6 0/5] spi: spi-mem: Add driver for NXP FlexSPI controller

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Message-ID: <20190109155630.3ec34c60@jawa>
Date:   Wed, 9 Jan 2019 15:56:30 +0100
From:   Lukasz Majewski <lukma@...x.de>
To:     Schrempf Frieder <frieder.schrempf@...tron.de>
Cc:     Yogesh Narayan Gaur <yogeshnarayan.gaur@....com>,
        "linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
        "boris.brezillon@...tlin.com" <boris.brezillon@...tlin.com>,
        "marek.vasut@...il.com" <marek.vasut@...il.com>,
        "broonie@...nel.org" <broonie@...nel.org>,
        "linux-spi@...r.kernel.org" <linux-spi@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "mark.rutland@....com" <mark.rutland@....com>,
        "robh@...nel.org" <robh@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "computersforpeace@...il.com" <computersforpeace@...il.com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v6 0/5] spi: spi-mem: Add driver for NXP FlexSPI
 controller

Hi Schrempf,

> On 08.01.19 10:24, Yogesh Narayan Gaur wrote:
> > - Add driver for NXP FlexSPI host controller
> > 
> >   FlexSPI is a flexsible SPI host controller [1], Chapter 30 page
> > 1475, which supports two SPI channels and up to 4 external devices.
> >   Each channel supports Single/Dual/Quad/Octal mode data transfer
> > (1/2/4/8 bidirectional data lines) i.e. FlexSPI acts as an
> > interface to external devices, maximum 4, each with up to 8
> > bidirectional data lines.
> > 
> > - Tested this driver with mtd_debug(Erase/Write/Read) utility and
> > JFFS2 filesystem mounting and booting on NXP LX2160ARDB[2] and
> > LX2160AQDS targets. LX2160ARDB is having two NOR slave device
> > connected on single bus A i.e. A0 and A1 (CS0 and CS1).
> >   LX2160AQDS is having two NOR slave device connected on separate
> > buses one flash on A0 and second on B1 i.e. (CS0 and CS3).
> >   Verified this driver on following SPI NOR flashes:
> >     Micron, mt35xu512aba, [Read - 1 bit mode]
> >     Cypress, s25fl512s, [Read - 1/2/4 bit mode]
> > 
> > [1] https://www.nxp.com/docs/en/reference-manual/IMXRT1050RM.pdf
> > [2]
> > https://patchwork.kernel.org/project/linux-arm-kernel/list/?submitter=182097
> > 
> > Yogesh Narayan Gaur (5):
> >    spi: spi-mem: Add driver for NXP FlexSPI controller
> >    dt-bindings: spi: add binding file for NXP FlexSPI controller
> >    arm64: dts: lx2160a: add FlexSPI node property
> >    arm64: defconfig: enable NXP FlexSPI driver
> >    MAINTAINERS: add maintainers for the NXP FlexSPI driver
> > 
> > Changes for v6:
> > - Rebase on top of v5.0-rc1.  
> 
> Your patches don't apply to v5.0-rc1. It seems like you have instead 
> rebased onto the for-5.1 or for-next branch of the SPI tree. I guess 
> this is okay, but you should have pointed that out correctly here.

If I may ask for a few (1-2) days, so I can test this code on vf610 NXP
SoC.

As fair as I remember there were some issues when I tested it a few
months back.

> 
> > - Incorporated review comments for
> >    patch 'spi: spi-mem: Add driver for NXP FlexSPI controller'.
> > - Updated s-b tag in all patches.
> > Changes for v5:
> > - Rebase on top of v4.20-rc2
> > - Incorporated review comments for
> >    patch 'spi: spi-mem: Add driver for NXP FlexSPI controller'.
> > Changes for v4:
> > - Incorporated review comments for
> >    patch 'spi: spi-mem: Add driver for NXP FlexSPI controller'.
> > - Incorporated binding file review comments.
> > Changes for v3:
> > - Incorporated review comments for
> >    patch 'spi: spi-mem: Add driver for NXP FlexSPI controller'.
> > Changes for v2:
> > - Incorporated Boris review comments and drop below patches as per
> > the comments.
> >   - Patch 'spi: add slave device size in spi_device struct'
> >   - Patch 'spi: add flags for octal I/O data transfer'
> > - Incorporated DTS and Binding file review comments of Shawn Guo
> > and Rob Herring.
> > 
> >   .../devicetree/bindings/spi/spi-nxp-fspi.txt  |   39 +
> >   MAINTAINERS                                   |    7 +
> >   .../boot/dts/freescale/fsl-lx2160a-rdb.dts    |   22 +
> >   .../arm64/boot/dts/freescale/fsl-lx2160a.dtsi |   13 +
> >   arch/arm64/configs/defconfig                  |    1 +
> >   drivers/spi/Kconfig                           |   10 +
> >   drivers/spi/Makefile                          |    1 +
> >   drivers/spi/spi-nxp-fspi.c                    | 1095
> > +++++++++++++++++ 8 files changed, 1188 insertions(+)
> >   create mode 100644
> > Documentation/devicetree/bindings/spi/spi-nxp-fspi.txt create mode
> > 100644 drivers/spi/spi-nxp-fspi.c 
> ______________________________________________________
> Linux MTD discussion mailing list
> http://lists.infradead.org/mailman/listinfo/linux-mtd/

Best regards,

Lukasz Majewski

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