• Lukasz Majewski's avatar
    spi: Convert CONFIG_DM_SPI* to CONFIG_$(SPL_TPL_)DM_SPI* · 56c40460
    Lukasz Majewski authored
    This change allows more fine tuning of driver model based SPI support in
    SPL and TPL. It is now possible to explicitly enable/disable the DM_SPI
    support in SPL and TPL via Kconfig option.
    
    Before this change it was necessary to use:
        /* SPI Flash Configs */
        #if defined(CONFIG_SPL_BUILD)
        #undef CONFIG_DM_SPI
        #undef CONFIG_DM_SPI_FLASH
        #undef CONFIG_SPI_FLASH_MTD
        #endif
    
    in the ./include/configs/<board>.h, which is error prone and shall be
    avoided when we strive to switch to Kconfig.
    
    The goal of this patch:
    
    Provide distinction for DM_SPI support in both U-Boot proper and SPL (TPL).
    Valid use case is when U-Boot proper wants to use DM_SPI, but SPL must
    still support non DM driver.
    
    Another use case is the conversion of non DM/DTS SPI driver to support
    DM/DTS. When such driver needs to work in both SPL and U-Boot proper, the
    distinction is needed in Kconfig (also if SPL version of the driver
    supports OF_PLATDATA).
    
    In the end of the day one would have to support following use cases (in
    single driver file - e.g. mxs_spi.c):
    
    - U-Boot proper driver supporting DT/DTS
    - U-Boot proper driver without DT/DTS support (deprecated)
    - SPL driver without DT/DTS support
    - SPL (and TPL) driver with DT/DTS (when the SoC has enough resources to
      run full blown DT/DTS)
    - SPL driver with DT/DTS and SPL_OF_PLATDATA (when one have constrained
      environment with no fitImage and OF_LIBFDT support).
    
    Some boards do require SPI support (with DM) in SPL (TPL) and some only
    have DM_SPI{_FLASH} defined to allow compiling SPL.
    
    This patch converts #ifdef CONFIG_DM_SPI* to #if CONFIG_IS_ENABLED(DM_SPI)
    and provides corresponding defines in Kconfig.
    Signed-off-by: Lukasz Majewski's avatarLukasz Majewski <lukma@denx.de>
    Tested-by: Adam Ford <aford173@gmail.com> #da850-evm
    Signed-off-by: default avatarHou Zhiqiang <Zhiqiang.Hou@nxp.com>
    [trini: Fixup a few platforms]
    Signed-off-by: Tom Rini's avatarTom Rini <trini@konsulko.com>
    56c40460