Hi Stefan,
On Tue, 12 Jun 2018 16:14:19 +0200, Stefan Roese sr@denx.de wrote:
Hi Miquèl,
On 06.06.2018 17:30, Miquel Raynal wrote:
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' ?).
Interesting. I like this idea.
BTW: I also would like to see the ubifs commands being supported by the common file commands, like "ls" and "load". But this just came to my mind right now (again) and definitely has nothing to do with your current work on SPI NAND.
The series has been tested on an Ocelot board PCB123 (VSC7514), featuring a Macronix SPI NAND chip.
TL;DR: the series contains:
- 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.
- DT changes to make use of a SPI NAND on the Ocelot board.
Any comments on the code, the organization and the respect of U-Boot
driver model will be welcome.
Many thanks for working on this. I might get access to a new platform in a few days, requiring SPI NAND support. So I tried to
Thanks, testing will be appreciated!
apply your patches on top of current mainline, which unfortunately fails with some patches.
Would it be possible for you to rebase your patches on top of current mainline U-Boot? Best would be to also push a git branch with your patches / changes. This way you don't need to re-send all those patches to the list, without any real changes done.
Mmmh. Sorry for that. Please have a look at this branch, the work is based on top of v2018.03:
https://github.com/miquelraynal/u-boot/commits/public/spi-nand
Thanks, Stefan
Thanks, Miquèl