On Fri, Aug 3, 2018 at 1:57 PM, Miquel Raynal miquel.raynal@bootlin.com wrote:
Hi Jagan, Tom,
Miquel Raynal miquel.raynal@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