On Fri, Nov 18, 2016 at 07:04:26PM +0000, Lee Jones wrote: > On Mon, 14 Nov 2016, Mika Westerberg wrote: > > > This is fifth version of the series. You can find the previous versions > > archived on: > > > > v4: https://lwn.net/Articles/703773/ > > v3: https://lwn.net/Articles/697231/ > > v2: http://lists.infradead.org/pipermail/linux-mtd/2016-June/068277.html > > v1: https://lkml.org/lkml/2016/6/14/269 > > > > This patch series adds support for the Intel SPI serial flash controller > > found on many recent Intel CPUs including Baytrail and Braswell. This > > driver makes it possible to access the BIOS and other platform data which > > is stored on the SPI serial flash. It is also possible to upgrade the BIOS > > using this driver if it has not been protected by special hardware bits. > > > > The patch [1/3] includes documentation how to upgrade BIOS on MinnowBoard > > MAX. > > > > Since poking the SPI serial flash can brick the machine, this driver can > > only be enabled when CONFIG_EXPERT=y and even then it will remain read-only > > unless instructed othwerwise by module parameter. > > > > Changes from v4: > > * Use INTEL_SPI_FIFO_SZ instead of hard coded value of 64 bytes > > * Don't increment i inside call to FDATA() macro > > * Check nor->read_opcode in intel_spi_read() and return > > -EINVAL if not supported. We may add SFDP support later on. > > > > Changes from v3: > > * Added ACKs from Lee Jones. > > * Use bus instead of dev->bus in PCI accesses > > > > Changes from v2: > > * Rebased on top of v4.8-rc2 > > * Updated intel_spi_read/write() according spi-nor core changes which > > drops retlen parameter and returns number of bytes read/written. > > > > Changes from v1: > > * Older hardware does not support 64k erase command so added erase_64k > > flag which is set only for Broxton (BXT). > > * Fix protection range offset for Broxton. Now there is ispi->pregs > > pointing to the start of the protection registers. > > * Change naming of constants from BCR_BYT -> BYT_BCR and so on. > > * Drop lpc_ich_finalize_spi_cell() and initialize cell directly in > > lpc_ich_init_spi(). > > * Use info->type in switch in lpc_ich_init_spi(). > > * Add defines for magic numbers used in lpc_ich_init_spi(). > > * Use PLATFORM_DEVID_NONE with mfd_add_devices(). > > > > Mika Westerberg (3): > > spi-nor: Add support for Intel SPI serial flash controller > > mfd: lpc_ich: Add support for SPI serial flash host controller > > mfd: lpc_ich: Add support for Intel Apollo Lake SoC > > What's the plan for this set?
I was hoping to get this merged via MTD tree but I haven't got much comments from the maintainers. No idea if anyone is going to take this :-(
