Re: [PATCH v1 1/5] ASoC: dt-bindings: Add StarFive JH7110 dummy PWM-DAC transmitter

On Mon, 26 Jun 2023 17:34:56 +0200, Krzysztof Kozlowski wrote:

On 26/06/2023 13:09, Hal Feng wrote:

...

Add bindings for StarFive JH7110 dummy PWM-DAC transmitter.

...

...

+required:

• • compatible
• • "#sound-dai-cells"

+additionalProperties: false

+examples:

• • |
• pwmdac-dit {

•    compatible = "starfive,jh7110-pwmdac-dit";
  

•    #sound-dai-cells = <0>;
  

BTW, I don't see any resources here. Neither in the driver. I think you just added this for driver, not for a real hardware.

Yes, this is a dummy PWM-DAC transmitter as described in the title. The StarFive JH7110 PWM-DAC module doesn't need a hardware codec, but a dummy codec is needed for the driver.

For a similar implementation, you can refer to sound/soc/codecs/spdif_transmitter.c

Best regards, Hal