Re: [PATCH v2 2/2] ASoC: tas2783-sdw: do not cache read-only Controls

[Mark Brown]

On Fri, Aug 14, 2026 at 09:40:00AM +0300, Andrey Golovko wrote:
> The read-only SDCA Controls are readings of device state, but the regmap
> caches them and tas2783_reg_default[] gives each one a placeholder, so a
> read is answered from the cache and never reaches the peripheral.  The

>  static bool tas2783_volatile_register(struct device *dev, u32 reg)
>  {
> +	if (tas2783_read_only_control(reg))
> +		return true;
> +

Does this work for multibyte reads?  The regmap has val_size set to 8
but some of the read only registers are multibyte.  For SoundWire
val_bits doesn't really matter so you should just be able to set that to
32.

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