[PATCH v9 3/7] mux: add help text for MULTIPLEXER config option

[Peter Rosin]

Hi!

2026-02-10 at 08:50, Geert Uytterhoeven wrote:
> In the other thread, Josua pointed out that there are already several
> drivers that cannot be enabled if MULTIPLEXER is not selected by
> something else:
> 
> drivers/mux/Kconfig:
> 
>     menu "Multiplexer drivers"
>             depends on MULTIPLEXER
> 
>     config MUX_ADG792A
>             tristate "Analog Devices ADG792A/ADG792G Multiplexers"
>             depends on I2C
> 
>     config MUX_ADGS1408
>             tristate "Analog Devices ADGS1408/ADGS1409 Multiplexers"
>             depends on SPI
> 
>     config MUX_GPIO
>             tristate "GPIO-controlled Multiplexer"
>             depends on GPIOLIB || COMPILE_TEST
> 
>     config MUX_MMIO
>             tristate "MMIO/Regmap register bitfield-controlled Multiplexer"
>             depends on OF
> 
> While MUX_MMIO is selected by some/all(?) symbols that need it,
> the other three are not.  Are these three really dependent on another
> symbol selecting MULTIPLEXER?

I think you have the gist of it, yes. It's of course not ideal...

Cheers,
Peter