On Thu, Jun 04, 2020 at 11:11:53PM +0800, Zhiqiang Hou wrote:

> From: Lukasz Majewski <lu...@denx.de>
> 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
>     #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 <lu...@denx.de>
> Tested-by: Adam Ford <aford...@gmail.com> #da850-evm
> Signed-off-by: Hou Zhiqiang <zhiqiang....@nxp.com>

Applied to u-boot/master, thanks!


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