Re: [PATCH v1] arm64: dts: qcom: purwa-iot-evk: add missing DP2 audio link

[Le Qi]

On 10/20/2026 6:14 PM, Konrad Dybcio wrote:
> On 10/9/26 5:04 AM, Le Qi wrote:
> > The DP2 DAI link is missing from the sound card definition, preventing
> > audio playback over the third DisplayPort interface.
> >
> > Add the required codec, CPU, and platform DAI configuration to enable
> > audio playback over DP2.
> >
> > Signed-off-by: Le Qi<le.qi@xxxxxxxxxxxxxxxx>
> > ---
> >   arch/arm64/boot/dts/qcom/purwa-iot-evk.dts | 16 ++++++++++++++++
> >   1 file changed, 16 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/qcom/purwa-iot-evk.dts b/arch/arm64/boot/dts/qcom/purwa-iot-evk.dts
> > index a811d8ca2dbf..93cefffd1f46 100644
> > --- a/arch/arm64/boot/dts/qcom/purwa-iot-evk.dts
> > +++ b/arch/arm64/boot/dts/qcom/purwa-iot-evk.dts
> > @@ -641,6 +641,22 @@ platform {
> >   				sound-dai = <&q6apm>;
> >   			};
> >   		};
> > +
> > +		dp2-dai-link {
> > +			link-name = "DP2 Playback";
> > +
> > +			codec {
> > +				sound-dai = <&mdss_dp2>;
> > +			};
> > +
> > +			cpu {
> > +				sound-dai = <&q6apmbedai DISPLAY_PORT_RX_2>;
> > +			};
> > +
> > +			platform {
> > +				sound-dai = <&q6apm>;
> > +			};
> > +		};
> Srini, can/should this be in the SoC DT?
>
> Konrad

Hi Konrad,

I think it is better to keep this in the board DT, since the sound card 
is board-specific. DP0 and DP1 DAI links are already defined here, so 
DP2 should be added alongside them.

Srini has also agreed to adding DP2 support in the audio topology.

Thanks,

--
Thx and BRs,
Le Qi