On Sat, Oct 24, 2020 at 03:58:54PM +0800, Jiaxin Yu wrote:

> +/* mtkaif dmic */
> +static const char * const mt8192_adda_off_on_str[] = {
> +	"Off", "On"
> +};
> +
> +static const struct soc_enum mt8192_adda_enum[] = {
> +	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(mt8192_adda_off_on_str),
> +			    mt8192_adda_off_on_str),
> +};

This should be a standard boolean control with a name ending in Switch
rather than an enum.