[RFC PATCH v1 1/2] dm: i2c: allow disabling driver model in SPL

[Simon Glass]

On Fri, 5 Feb 2021 at 08:11, Igor Opaniuk <igor.opaniuk at foundries.io> wrote:
>
> From: Igor Opaniuk <igor.opaniuk at foundries.io>
>
> At present if U-Boot proper uses driver model for I2C, then SPL has to
> also. While this is desirable, it places a significant barrier to moving
> to driver model in some cases. For example, with a space-constrained SPL
> it may be necessary to enable CONFIG_SPL_OF_PLATDATA which involves
> adjusting some drivers.
>
> This patch introduces a separate Kconfig symbols for enabling DM_I2C and
> DM_I2C_GPIO support in SPL.
>
> This will also help to get away from dirty workarounds to
> achieve non-DM I2C support for SPL, which is currently used in some
> board header files like:
>
> ifdef CONFIG_SPL_BUILD
> undef CONFIG_DM_I2C
> endif
>
> Signed-off-by: Igor Opaniuk <igor.opaniuk at foundries.io>
> ---
>
>  drivers/i2c/Kconfig   | 21 +++++++++++++++++++++
>  drivers/i2c/Makefile  |  4 ++--
>  drivers/misc/Makefile |  2 +-
>  3 files changed, 24 insertions(+), 3 deletions(-)

Reviewed-by: Simon Glass <sjg at chromium.org>