Hi Tom, Jagan,
Boris Brezillon boris.brezillon@bootlin.com wrote on Thu, 16 Aug 2018 18:58:58 +0200:
Tom, Jagan,
On Thu, 16 Aug 2018 17:29:58 +0200 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 made some cleanups in the MTD layer and 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) ubi part bar # create a static UBI volume in the bar partition mtd list # show the current MTD devices/partitions
Thanks, Miquèl
[...]
Can we get some of those patches merged to avoid sending another version containing more than 30 patches. Here is a list of patches which IMO are ready to be merged:
- 1 to 4
- 5 and 6 if 6 is squashed in 5
- 7 to 23
Yes, I agree with Boris, I do not want to resend another 30+ patch series while the changes are on the last 5 only, could one of you please apply them from 1 to 23 (with 6 squashed in 5) ?
Next week I will send a v7 for patches 24..31.
Thanks, Miquèl