[PATCH v3] dm: i2c: Add a migration method for I2C

[Pali Rohár]

On Thursday 25 March 2021 13:39:28 Simon Glass wrote:
> This probably should have been done a while back since it is a core
> system. Add a migration deadline of later this year, to catch the
> stragglers.
> 
> Signed-off-by: Simon Glass <sjg at chromium.org>
> 
> ---
> 
> Changes in v3:
> - s/'network'/I2C/ again
> 
> Changes in v2:
> - s/'network'/I2C/
> 
>  Makefile                       | 11 +++++++++++
>  doc/driver-model/migration.rst |  8 ++++++++
>  2 files changed, 19 insertions(+)
> 
> diff --git a/Makefile b/Makefile
> index b72d8d20c08..f60c7901a5b 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -1152,6 +1152,17 @@ ifneq ($(CONFIG_SPL_FIT_GENERATOR),)
>  	@echo >&2 "to binman instead, to avoid the proliferation of"
>  	@echo >&2 "arch-specific scripts with no tests."
>  	@echo >&2 "===================================================="
> +endif
> +ifneq ($(CONFIG_NET),)
> +ifneq ($(CONFIG_DM_ETH),y)
> +	@echo >&2 "===================== WARNING ======================"
> +	@echo >&2 "This board does not use CONFIG_DM_I2C (Driver Model"

"This board does not use CONFIG_DM_I2C" but you are checking for CONFIG_NET :)

> +	@echo >&2 "for I2C drivers). Please update the board to use"
> +	@echo >&2 "CONFIG_DM_I2C before the v2021.10 release. Failure to"
> +	@echo >&2 "update by the deadline may result in board removal."
> +	@echo >&2 "See doc/driver-model/migration.rst for more info."
> +	@echo >&2 "===================================================="
> +endif
>  endif
>  	@# Check that this build does not use CONFIG options that we do not
>  	@# know about unless they are in Kconfig. All the existing CONFIG
> diff --git a/doc/driver-model/migration.rst b/doc/driver-model/migration.rst
> index 2284e8a6f70..8d0bb7635b5 100644
> --- a/doc/driver-model/migration.rst
> +++ b/doc/driver-model/migration.rst
> @@ -99,3 +99,11 @@ Deadline: 2020.07
>  The network subsystem has supported the driver model since early 2015.
>  Maintainers should submit patches switching over to using CONFIG_DM_ETH and
>  other base driver model options in time for inclusion in the 2020.07 release.
> +
> +CONFIG_DM_I2C
> +-------------
> +Deadline: 2021.10
> +
> +The I2C subsystem has supported the driver model since early 2015.
> +Maintainers should submit patches switching over to using CONFIG_DM_I2C and
> +other base driver model options in time for inclusion in the 2021.10 release.
> -- 
> 2.31.0.291.g576ba9dcdaf-goog
>