Re: [PATCH v3 12/12] dt-bindings: mediatek: mt8188: add mt8188-mt6359 document

["Trevor Wu (吳文良)" <Trevor.Wu@mediatek.com>]

On Fri, 2022-12-09 at 11:18 +0100, Krzysztof Kozlowski wrote:
> On 08/12/2022 04:31, Trevor Wu wrote:
> > Add document for mt8188 board with mt6359.
> > 
> > Signed-off-by: Trevor Wu <trevor.wu@mediatek.com>
> > ---
> >  .../bindings/sound/mt8188-mt6359.yaml         | 60
> > +++++++++++++++++++
> >  1 file changed, 60 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/sound/mt8188-
> > mt6359.yaml
> > 
> > diff --git a/Documentation/devicetree/bindings/sound/mt8188-
> > mt6359.yaml b/Documentation/devicetree/bindings/sound/mt8188-
> > mt6359.yaml
> > new file mode 100644
> > index 000000000000..eac1c87b693a
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/sound/mt8188-mt6359.yaml
> 
> Missing vendor prefix. You got comments for it already.
Hi Krzysztof,

I will correct it in V4.

> 
> > @@ -0,0 +1,60 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: 
> > https://urldefense.com/v3/__http://devicetree.org/schemas/sound/mt8188-mt6359.yaml*__;Iw!!CTRNKA9wMg0ARbw!nw_OzBIRlXrEP6K_EtxEWAIZzuvnD3Dm_KDuv8gpLRqlnnSfVLksNfKqMmeYiFlEVVy6F2BXwmXB8oQkDPeBuEXMtfLX2w$ 
> >  
> > +$schema: 
> > https://urldefense.com/v3/__http://devicetree.org/meta-schemas/core.yaml*__;Iw!!CTRNKA9wMg0ARbw!nw_OzBIRlXrEP6K_EtxEWAIZzuvnD3Dm_KDuv8gpLRqlnnSfVLksNfKqMmeYiFlEVVy6F2BXwmXB8oQkDPeBuEXodFoCJA$ 
> >  
> > +
> > +title: MediaTek MT8188 ASoC sound card
> > +
> > +maintainers:
> > +  - Trevor Wu <trevor.wu@mediatek.com>
> > +
> > +properties:
> > +  compatible:
> > +    const: mediatek,mt8188-mt6359-evb
> > +
> > +  model:
> > +    $ref: /schemas/types.yaml#/definitions/string
> > +    description: User specified audio sound card name
> > +
> > +  audio-routing:
> > +    $ref: /schemas/types.yaml#/definitions/non-unique-string-array
> > +    description:
> > +      A list of the connections between audio components. Each
> > entry is a
> > +      sink/source pair of strings. Valid names could be the input
> > or output
> > +      widgets of audio components, power supplies, MicBias of
> > codec and the
> > +      software switch.
> > +
> > +  mediatek,platform:
> > +    $ref: /schemas/types.yaml#/definitions/phandle
> > +    description: The phandle of MT8188 ASoC platform.
> > +
> > +  mediatek,dptx-codec:
> > +    $ref: /schemas/types.yaml#/definitions/phandle
> > +    description: The phandle of MT8188 Display Port Tx codec node.
> > +
> > +  mediatek,hdmi-codec:
> > +    $ref: /schemas/types.yaml#/definitions/phandle
> > +    description: The phandle of MT8188 HDMI codec node.
> 
> Why you do not use DAI links for all these?

Are the following examples "DAI links" you mean?

hdmi-dai-link {
            link-name = "HDMI Playback";
            cpu {
                sound-dai = <&q6afedai TERTIARY_MI2S_RX>;
            };

            platform {
                sound-dai = <&q6routing>;
            };

            codec {
                sound-dai = <&lt9611_codec 0>;
            };
        };

or

headset-codec {
		sound-dai = <&rt5682s>;
};


As far as I know, only "mediatek,platform" was used at the beginning.
Next, hdmi-codec was introduced, and it followed the same style to get
phandle. Finally, it became three properties in mt8195, and the
implementation of mt8188 was inherited from mt8195.

I just glanced over the usage of dai links.
As I see it, I will replace the codec parts with dai link structure
like the example above first. It seems to be easier to extend more
codecs with the same tyle.

For platform part, I need more time to check if it is better to keep
the original implementation, because we still have to take SOF related 
implementation into consideration.


> 
> > +
> > +additionalProperties: false
> > +
> > +required:
> > +  - compatible
> > +  - mediatek,platform
> > +
> > +examples:
> > +  - |
> > +
> 
> Drop blank line.
> 
OK, I will fix it in V4.

> > +    sound: mt8188-sound {
> 
> Drop label, not used. Use generic node names, so just "sound".
> 
OK, I will fix it in V4.

Thanks,
Trevor

> > +        compatible = "mediatek,mt8188-mt6359-evb";
> 
> Best regards,
> Krzysztof
>