Am 04.12.2018 um 13:55 schrieb Boris Brezillon:
On Tue, 4 Dec 2018 17:56:48 +0530
Vignesh R <[email protected]> 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U-Boot SPI NOR support (sf layer) is quite outdated as it does not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!
Right, I do appreciate this!
I did some compilation tests first and I'm happy to say that with the
SPL_SPI_FLASH_TINY option enabled, my SPL is about 1900 byte smaller
than before :-)
However, my socfpga socrates board does not boot. I'll have to
investigate why. I just applied this series and compiled for
socfpga_socrates_defconfig. Is there anything else I should have changed
to make it work?
Regards,
Simon
_______________________________________________
U-Boot mailing list
[email protected]
https://lists.denx.de/listinfo/u-boot
