Re: [PATCH v2 1/7] dt-bindings: sound: sophgo: add CV1800B I2S/TDM controller binding

On 18/01/2026 13:18, Anton D. Stavinskii wrote:

quoted

Again, messed constraints.

quoted

+    items:
+      enum: [rx, tx]

No, it has to be a specific/fixed list.

Here is the question. Can you please help to understand how to describe
this properly. The idea is that TDM module is usable even without
specified dmas. Each TDM can work as clock source, only rx only tx or
both. I can force to use both channels but the user probably will want 
to not consume all the channels for if it is not needed. DMA can provide
channels for something else like SPI/I2C/UART etc. I'm asking because
I'm afraid I will do some mess again here.

If any combination is valid in hardware, then:

minItems: 1
items:
  - enum: [rx, tx]
  - const: tx

Best regards,
Krzysztof