Re: [PATCH v2 1/2] dt-bindings: sound: add Texas Instruments TAS2557

[Gianluca Boiano]

> +  ti,channel:
>
> ti,audio-channel
>
> Most speakers do not need such property, especially that what do you do
> in 4-speaker configuration? I found only two references: awinic,aw87390
> and awinic,aw88395.yaml.

Dropped in v3. A node now takes a `reg` array of 1 or 2 addresses;
the device at each index applies that half (DEV_A/DEV_B) of the
stereo firmware. Device order is the only configuration needed - no
property. This matches tas2781.c/tas2781-fmwlib.c's architecture for
the same firmware toolchain.

`reg` is capped at two because the firmware container itself only
defines two device types (DEV_A/DEV_B). A 4-speaker board would need
two independent stereo pairs on two nodes, same as with tas2781.

> +    $ref: /schemas/types.yaml#/definitions/string
>
> Wrong type - there is basically no syntax like that (except a few
> left-overs which I remove now), so please kindly do not upstrem some old
> code. Drop.
>
> You need maxItems.

Fixed in v3: maxItems: 1.

Gianluca