On Wed, Jun 6, 2018 at 9:00 PM, Miquel Raynal miquel.raynal@bootlin.com 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' ?).
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.
Thanks, Miquèl
Boris Brezillon (6): mtd: Fallback to ->_read/write_oob() when ->_read/write() is missing mtd: nand: Add core infrastructure to deal with NAND devices mtd: nand: Pass mode information to nand_page_io_req spi: Extend the core to ease integration of SPI memory controllers mtd: spinand: Add initial support for the MX35LF1GE4AB chip dt-bindings: Add bindings for SPI NAND devices
Brian Norris (1): mtd: add get/set of_node/flash_node helpers
Frieder Schrempf (1): mtd: spinand: Add initial support for Winbond W25M02GV
Miquel Raynal (10): mtd: fix build issue with includes mtd: move definitions to enlarge their range mtd: move all flash categories inside MTD submenu mtd: move NAND fiels into a raw/ subdirectory mtd: rename nand into rawnand in Kconfig prompt mtd: spinand: Add initial support for the MX35LF2GE4AB chip mtd: uclass: add probe function cmd: mtd: add 'mtd' command mips: dts: ocelot: describe SPI CS pins mips: dts: ocelot: add the SPI NAND node
Peter Pan (2): mtd: nand: Add core infrastructure to support SPI NANDs mtd: spinand: Add initial support for Micron MT29F2G01ABAGD
I have reviewed and commented most of the stuff that are in my control, except few spi-nand code, which I would like to give a try to other people in the list. Hope to seen the fine-tuning patches on next version.
Jagan.