Migration Schedule
  ====================
  
  U-Boot has been migrating to a new driver model since its introduction in
  2014. This file describes the schedule for deprecation of pre-driver-model
  features.

  CONFIG_DM_MMC
  -------------
  
  Status: In progress
  Deadline: 2019.04
  
  The subsystem itself has been converted and maintainers should submit patches
  switching over to using CONFIG_DM_MMC and other base driver model options in
  time for inclusion in the 2019.04 rerelease.

  CONFIG_DM_USB
  -------------
  
  Status: In progress
  Deadline: 2019.07
  
  The subsystem itself has been converted along with many of the host controller
  and maintainers should submit patches switching over to using CONFIG_DM_USB and
  other base driver model options in time for inclusion in the 2019.07 rerelease.

  CONFIG_SATA
  -----------
  
  Status: In progress
  Deadline: 2019.07
  
  The subsystem itself has been converted along with many of the host controller
  and maintainers should submit patches switching over to using CONFIG_AHCI and
  other base driver model options in time for inclusion in the 2019.07 rerelease.

  CONFIG_BLK
  ----------
  
  Status: In progress

  Deadline: 2019.07

  In concert with maintainers migrating their block device usage to the
  appropriate DM driver, CONFIG_BLK needs to be set as well.  The final deadline
  here coincides with the final deadline for migration of the various block

  subsystems.  At this point we will be able to audit and correct the logic in
  Kconfig around using CONFIG_PARTITIONS and CONFIG_HAVE_BLOCK_DEVICE and make
  use of CONFIG_BLK / CONFIG_SPL_BLK as needed.

  
  CONFIG_DM_SPI
  CONFIG_DM_SPI_FLASH
  -------------------
  
  Board Maintainers should submit the patches for enabling DM_SPI and DM_SPI_FLASH
  to move the migration with in the deadline.

  No dm conversion yet:
  	drivers/spi/cf_spi.c
  	drivers/spi/fsl_espi.c
  	drivers/spi/lpc32xx_ssp.c
  	drivers/spi/mpc8xx_spi.c
  	drivers/spi/mpc8xxx_spi.c
  	drivers/spi/mxs_spi.c
  	drivers/spi/sh_qspi.c
  	drivers/spi/sh_spi.c
  	drivers/spi/soft_spi_legacy.c

  	Status: In progress
  	Deadline: 2019.04

  Partially converted:
  	drivers/spi/atcspi200_spi.c
  	drivers/spi/davinci_spi.c
  	drivers/spi/fsl_dspi.c
  	drivers/spi/fsl_qspi.c
  	drivers/spi/kirkwood_spi.c
  	drivers/spi/mxc_spi.c
  	drivers/spi/omap3_spi.c
  	drivers/spi/ti_qspi.c

  	Status: In progress
  	Deadline: 2019.07

  --
  Jagan Teki <jagan@openedev.com>

  12/24/2018

  03/14/2018

  
  
  CONFIG_DM_PCI
  -------------
  Deadline: 2019.07
  
  The PCI subsystem has supported driver model since mid 2015. Maintainers should
  submit patches switching over to using CONFIG_DM_PCI and other base driver
  model options in time for inclusion in the 2019.07 release.

  
  CONFIG_DM_VIDEO
  ---------------
  Deadline: 2019.07
  
  The video subsystem has supported driver model since early 2016. Maintainers
  should submit patches switching over to using CONFIG_DM_VIDEO and other base
  driver model options in time for inclusion in the 2019.07 release.