Re: [PATCH v4 3/6] arm64: dts: qcom: Add AYN QCS8550 Common

[Aaron Kling]

On Tue, Mar 24, 2026 at 7:36 AM Konrad Dybcio
<konrad.dybcio@xxxxxxxxxxxxxxxx> wrote:
>
> On 3/23/26 5:27 PM, Aaron Kling via B4 Relay wrote:
> > From: Teguh Sobirin <teguh@xxxxxxxx>
> >
> > This contains everything common between the AYN QCS8550 devices. It will
> > be included by device specific dts'.
> >
> > Signed-off-by: Teguh Sobirin <teguh@xxxxxxxx>
> > Co-developed-by: Aaron Kling <webgeek1234@xxxxxxxxx>
> > Signed-off-by: Aaron Kling <webgeek1234@xxxxxxxxx>
> > ---
>
> [...]
>
> > +     sound {
> > +             compatible = "qcom,sm8550-sndcard", "qcom,sm8450-sndcard";
> > +             pinctrl-0 = <&lpi_i2s3_active>;
> > +             pinctrl-names = "default";
> > +
> > +             model = "AYN-Odin2";
>
> Is this enough of a distinction? Do you need to make any changes to the
> one with a HDMI bridge to get HDMI audio?

After this quesstion, I tried to verify hdmi and am unable to even get
the connector to come up. The lt8912b driver complains that the
connector doesn't support edid read. Which per the current connector
node is correct, none of the devices list a ddc node. I am trying to
investigate this further, but vendor source release unfortunately
appears to be missing pieces related to this. And no other current
qcom device uses this bridge to take a guess at which controller the
ddc is on.

On a related note, I'm not sure hdmi is covered in the audio topology.
What I'm using is here [0]. This is in a fork of the topology repo
with aosp build rules added. Speakers work, headphones out and in
work. DP works only with the pending q6dsp fixups series, which I
should probably narrow down and ask for a 6.18 backport for. The ucm
config [1] I'm basing tests on doesn't handle the built-in mic and I
haven't been able to figure that out yet, so that's also unknown.

Aaron

[0] https://github.com/LineageOS/android_hardware_qcom_audioreach-topology/blob/ad67f3777b1d4dec5289bc7117f2ec34521be7e6/AYN-Odin2.m4
[1] https://github.com/AYNTechnologies/alsa-ucm-conf/commit/d33738b93e9560e8d9e08a024cc84c8055bb7eb9