[U-Boot] [PATCH v6 00/27] SPI-NAND support

[Daniel Schwierzeck]

2018-08-04 9:23 GMT+02:00 Miquel Raynal <miquel.raynal at bootlin.com>:
> Hi Jagan,
>
> Jagan Teki <jagan at amarulasolutions.com> wrote on Fri, 3 Aug 2018
> 17:38:33 +0530:
>
>> On Fri, Aug 3, 2018 at 3:20 PM, Jagan Teki <jagan at amarulasolutions.com> wrote:
>> > On Fri, Aug 3, 2018 at 1:57 PM, Miquel Raynal <miquel.raynal at bootlin.com> wrote:
>> >> Hi Jagan, Tom,
>> >>
>> >> Miquel Raynal <miquel.raynal at bootlin.com> wrote on Wed,  1 Aug 2018
>> >> 10:18:21 +0200:
>> >>
>> >>> During the last months, Boris Brezillon shared his work to support
>> >>> serial flashes within Linux. First, he delivered (and merged) a new
>> >>> layer called spi-mem. He also initiated in Linux MTD subsystem the move
>> >>> of all 'raw' NAND related code to a raw/ subdirectory, adding at the
>> >>> same time a NAND core that would be shared with all NAND devices. Then,
>> >>> he contributed a generic SPI-NAND driver, making use of this NAND core,
>> >>> as well as some vendor code to drive a few chips.
>> >>>
>> >>> On top of this work, I added an 'mtd' U-Boot command to handle all sort
>> >>> of MTD devices. This should become the default command instead of having
>> >>> one per flash flavor ('sf', 'nand', 'spi-nand' ?).
>> >>>
>> >>> The series has been tested on an Ocelot board PCB123 (VSC7514),
>> >>> featuring a Macronix SPI NAND chip.
>> >>>
>> >>> TL;DR: the series contains:
>> >>> - A few patches from Linux to resynchronize some areas of the MTD layer.
>> >>> - Various fixes and re-organization of the MTD subsystem.
>> >>> - The introduction of the SPI-mem interface.
>> >>> - The addition of the generic SPI-NAND driver (and its bindings).
>> >>> - Several SPI NAND chip drivers (Macronix, Micron, Winbond).
>> >>> - A new 'mtd' command.
>> >>> - Support for spi-nand devices in mtdparts.
>> >>>
>> >>> To test your SPI-NAND device with U-Boot simply follow these lines:
>> >>>
>> >>> > setenv mtdparts mtdparts=spi-nand0:1m(foo),-(bar)
>> >>> > setenv mtdids spi-nand0=spi-nand0
>> >>> > mtdparts             # show the spi-nand device partitions
>> >>> > ubi part bar         # create a static UBI volume in the bar partition
>> >>>
>> >>> Thanks,
>> >>> Miquèl
>> >>>
>> >>> Changes since v5:
>> >>> -----------------
>> >>> * Included Boris fixup about the build issues.
>> >>> * Added Rb/Ab tags from Jagan on patchs 20/21.
>> >>
>> >> I can't see a pull request flow on U-Boot ML, I suppose you use a
>> >> different mean for that purpose.
>> >>
>> >> Jagan, is this version OK? Is it part of your PR?
>> >
>> > Travis is going on [1], will send PR once all fine.
>> >
>> > [1] https://travis-ci.org/openedev/u-boot-amarula/builds/411596788
>>
>> There are some build issues, not quite sure whether it relates. please
>> look into it.
>
> Thanks for the reports.
>
>>
>> [2] https://travis-ci.org/openedev/u-boot-amarula/jobs/411596814
>> [3] https://travis-ci.org/openedev/u-boot-amarula/jobs/411596815
>
> Boris supposedly fixed all the build issues related to my changes (I
> don't think the "missing interrupt parent" in a DTS file is related),
> please pull his branch [1].

the DTS warnings are unrelated and can be ignored. Only the onenand_*
stuff seems
to be a regression.I wonder if VCT is the only board remaining with
OneNAND support?

>
> The fixes are under the form of fixups if you wanna check them.
> Otherwise you can just 'rebase -i --autosquash' to automatically squash
> them with the commit introducing the regression.
>
> [1] https://travis-ci.org/openedev/u-boot-amarula/jobs/411596814
>
>
> Thanks,
> Miquèl
>
> --
> Miquel Raynal, Bootlin (formerly Free Electrons)
> Embedded Linux and Kernel engineering
> https://bootlin.com



-- 
- Daniel