[U-Boot] [RFC PATCH 0/6] SF: Migrate to Linux SPI NOR framework

[Tom Rini]

On Wed, Nov 28, 2018 at 10:56:01PM +0530, Vignesh R wrote:

> U-Boot SPI NOR support (sf layer) is quite outdated as it does not
> support 4 byte addressing opcodes, SFDP table and different types of
> quad mode enable sequences. Many newer flashes no longer support BANK
> registers use by sf layer to a access >16MB space.
> Also, many SPI controllers have special MMIO interfaces which provide
> accelerated read/write access but require knowledge of flash parameters
> to make use of it. Recent spi-mem layer provides a way to support such
> flashes but sf layer isnt using that.
> This patch series syncs SPI NOR framework from Linux v4.19. It also adds
> spi-mem support on top.
> So, we gain 4byte addressing support and SFDP support. This makes
> migrating to U-Boot MTD framework very easy.
> 
> Tested with few Spansion, micron and macronix flashes with TI's dra7xx,
> k2g, am43xx EVMs. I dont have access to flashes from other vendors. So,
> I would greatly appreciate testing on other platforms.
> 
> This is a RFC, if this approach if fine with the community and get an
> early feedback. Based on the response, I plan to post
> official series with better splitting of patches, removing all dead code
> and fixing up any checkpatch errors.

I like this approach and would like to see this go in, overall, for the
v2018.04 release if at all possible.  Thanks all!

-- 
Tom
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 819 bytes
Desc: not available
URL: <http://lists.denx.de/pipermail/u-boot/attachments/20181129/79a16fc8/attachment.sig>