[U-Boot] [RFC PATCH v2 00/11] SF: Migrate to Linux SPI NOR framework

Boris Brezillon
2018-12-04T12:55:48Z

On Tue, 4 Dec 2018 17:56:48 +0530
Vignesh R <vigneshr@ti.com> wrote:

> U-Boot SPI NOR support (sf layer) is quite outdated as it does not
> support 4 byte addressing opcodes, SFDP table parsing and different types of
> quad mode enable sequences. Many newer flashes no longer support BANK
> registers used 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 isn't 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 easier.

Glad to see that happen sooner than I had expected. Looks like the
patch series is in a good shape already, and I'm happy to see the
u-boot spi-nor layer being based on the Linux one.

Good job, and thanks again for working on that!

Boris