Merge tag 'mtd/for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux

Pull MTD updates from Miquel Raynal:
 "MTD core:
   - drop inactive maintainers, update the repositories and add IRC
     channel
   - debugfs functions improvements
   - initialize more structure parameters
   - misc fixes reported by robots

  MTD devices:
   - spear_smi: Fixed Write Burst mode
   - new Intel IXP4xx flash probing hook

  Raw NAND core:
   - useless extra checks dropped
   - update the detection of the bad block markers position

  Raw NAND controller drivers:
   - Cadence: new driver
   - Brcmnand: support for flash-dma v0 + fixes
   - Denali: drop support for the legacy controller/chip DT representation
   - superfluous dev_err() calls removed

  SPI NOR core changes:
   - introduce 'struct spi_nor_controller_ops'
   - clean the Register Operations methods
   - use dev_dbg insted of dev_err for low level info
   - fix retlen handling in sst_write()
   - fix silent truncations in spi_nor_read and spi_nor_read_raw()
   - fix the clearing of QE bit on lock()/unlock()
   - rework the disabling of the block write protection
   - rework the Quad Enable methods
   - make sure nor->spimem and nor->controller_ops are mutually exclusive
   - set default Quad Enable method for ISSI flashes
   - add support for few flashes

  SPI NOR controller drivers changes:
   - intel-spi:
      - support chips without software sequencer
      - add support for Intel Cannon Lake and Intel Comet Lake-H flashes

  CFI core changes:
   - code cleanups related useless initializers and coding style issues
   - fix for a possible double free problem in cfi_cmdset_0002
   - improved HyperFlash error reporting and handling in cfi_cmdset_0002 core"

* tag 'mtd/for-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (73 commits)
  mtd: devices: fix mchp23k256 read and write
  mtd: no need to check return value of debugfs_create functions
  mtd: spi-nor: Set default Quad Enable method for ISSI flashes
  mtd: spi-nor: Add support for is25wp256
  mtd: spi-nor: Add support for w25q256jw
  mtd: spi-nor: Move condition to avoid a NULL check
  mtd: spi-nor: Make sure nor->spimem and nor->controller_ops are mutually exclusive
  mtd: spi-nor: Rename Quad Enable methods
  mtd: spi-nor: Merge spansion Quad Enable methods
  mtd: spi-nor: Rename CR_QUAD_EN_SPAN to SR2_QUAD_EN_BIT1
  mtd: spi-nor: Extend the SR Read Back test
  mtd: spi-nor: Rework the disabling of block write protection
  mtd: spi-nor: Fix clearing of QE bit on lock()/unlock()
  mtd: cfi_cmdset_0002: fix delayed error detection on HyperFlash
  mtd: cfi_cmdset_0002: only check errors when ready in cfi_check_err_status()
  mtd: cfi_cmdset_0002: don't free cfi->cfiq in error path of cfi_amdstd_setup()
  mtd: cfi_cmdset_*: kill useless 'ret' variable initializers
  mtd: cfi_util: use DIV_ROUND_UP() in cfi_udelay()
  mtd: spi-nor: Print debug message when the read back test fails
  mtd: spi-nor: Check all the bits written, not just the BP ones
  ...

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