[U-Boot] [PATCH v2 4/4] mx6cuboxi: enable OF_CONTROL with DM_MMC and DM_USB

[Fabio Estevam]

On Sun, Nov 10, 2019 at 9:39 AM Baruch Siach <baruch at tkos.co.il> wrote:
>
> Make first step in DT/DM migration. Enable OF_CONTROL only for the main
> U-Boot image for now.
>
> Remove mmc_init_main() because board_mmc_init() is not called when
> DM_MMC is enabled.
>
> DM_MMC requires DM_GPIO for card-detect to work. That in turn makes gpio
> request mandatory. Add code to request/free gpios in platform code.
>
> MMC devices are now numbered according to DT. The SD card is 1, and eMMC
> is 2. Account for that in board_mmc_get_env_dev(), BOOT_TARGET_DEVICES,
> and has_emmc().
>
> DM_MMC requires BLK. However, the (BLK && !DM_USB) combination disables
> USB_STORAGE. Enable DM_USB to preserve USB functionality. Add also
> DM_REGULATORS for the USB power controller. This allows us to drop
> board_ehci_hcd_init() and setup_usb().
>
> Runtime selection of DT is necessary because of the i.MX6QD vs i.MX6SDL
> incompatibility. DT selection does not rely on GPIOs, since DM_GPIO
> depends on DT. Instead, we take one "fully featured" DT of each variant.
> That should be enough to boot from both SD card and eMMC.
>
> Since we don't select the exact DT, override the generic
> show_board_info() that shows the selected DT 'model' field.
>
> Signed-off-by: Baruch Siach <baruch at tkos.co.il>

Reviewed-by: Fabio Estevam <festevam at gmail.com>