On Wed, Mar 27, 2024 at 03:57:55PM +0800, Seven Lee wrote:

> +static const char * const nau8325_dac_oversampl[] = {
> +	"64", "256", "128", "", "32" };
> +
> +static const struct soc_enum nau8325_dac_oversampl_enum =
> +	SOC_ENUM_SINGLE(NAU8325_R29_DAC_CTRL1, NAU8325_DAC_OVERSAMPLE_SFT,
> +			ARRAY_SIZE(nau8325_dac_oversampl),
> +			nau8325_dac_oversampl);

This should really be a SOC_VALUE_ENUM so you can just hide the fourth
value rather than having the empty (presumably invalid) option.  Please
send an incremental patch doing this.