On Tue, Jan 29, 2019 at 11:19:47AM +0530, Vignesh R wrote: > Here is the v3 of SPI NOR migration(github branch at [1]). I have > retained Tested-by from v2 as this is just re split of patches and > minor fixups. > > Travis ci reports all green. > > Change log: > Since v2: > Split sync up patches into smaller versions so that its easier for review. > Address comments by Jagan and Simon Goldschmidt on v2. > Make SPI_FLASH_TINY(read only SF stack) as default for SPL build to > offset against size increase due to new code. > > Since v1: > Remove #ifindef __UBOOT__ > Add back BAR support, but dont enable as default for all platform (see > 10/11 for more details) > Enable SPI_FLASH_TINY on boards where there is SPL size constraint as > seen on travis ci builds. > Drop sf_mtd changes for now as it seems to cause issues. > v1: https://patchwork.ozlabs.org/cover/1012146/ > > Since RFC v2: > Fix issues reported by Simon Goldschmidt wrt 4 use of byte addressing opcode > Fix issues in compiling SFDP code > Re organize file names and Makefile to simply spi-nor-tiny inclusion > Remove SPI_FLASH_BAR and SF_DUAL_FLASH as these are no longer used > RFC v2: https://patchwork.ozlabs.org/cover/1007589/ > > Since RFC v1: > Add lightweight SPI flash stack for boards with SPL size constraints > Provide non DM version of spi-mem > Fix build issues on different platforms as reported by travis-ci on v1 > > RFC v1: https://patchwork.ozlabs.org/cover/1004689/ > > Background: > > U-Boot SPI NOR support (sf layer) is quite outdated as it does not 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. > > 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. Complete series > with dependencies here[1] > > For clean build on some platforms, depends on CONFIG_SPI_FLASH migration > to defconfigs [2] > > [1] https://github.com/r-vignesh/u-boot.git branch: spi-nor-mig-patch-v3 > [2] https://patchwork.ozlabs.org/patch/1007485/
Note that while I should have done -rc1 yesterday (and I'll email about that on its own shortly), to be clear and for the record, barring further comments that cannot be addressed in follow-up patches, I really want to see this merged. Thanks again all! -- Tom
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