Re: [PATCH v1 2/2] arm64: dts: qcom: qcs9075-evk: Add sound card

From: Mohammad Rafi Shaik
Date: Tue May 27 2025 - 03:55:58 EST




On 5/25/2025 10:43 PM, Dmitry Baryshkov wrote:
On 25/05/2025 18:53, Mohammad Rafi Shaik wrote:
Add the sound card node with tested playback over max98357a
i2s speakers and i2s mic.

I2S

speaker amplifier

Ack, will update in next patch version


Introduce HS (High-Speed) MI2S pin control support.
The I2S max98357a speaker is connected via HS0 and I2S

speaker amplifier

Ack


microphones utilize the HS2 interface.

Signed-off-by: Mohammad Rafi Shaik <mohammad.rafi.shaik@xxxxxxxxxxxxxxxx>
---
  .../boot/dts/qcom/qcs9075-iq-9075-evk.dts     | 52 +++++++++++++++++++
  arch/arm64/boot/dts/qcom/sa8775p.dtsi         | 14 +++++
  2 files changed, 66 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/qcs9075-iq-9075-evk.dts b/arch/ arm64/boot/dts/qcom/qcs9075-iq-9075-evk.dts
index 0e44e0e6dbd4..1ebf42b0b10e 100644
--- a/arch/arm64/boot/dts/qcom/qcs9075-iq-9075-evk.dts
+++ b/arch/arm64/boot/dts/qcom/qcs9075-iq-9075-evk.dts
@@ -6,6 +6,7 @@
  #include <dt-bindings/gpio/gpio.h>
  #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
+#include <dt-bindings/sound/qcom,q6afe.h>
  #include "qcs9075-som.dtsi"
@@ -20,6 +21,57 @@ aliases {
      chosen {
          stdout-path = "serial0:115200n8";
      };
+
+    max98357a: audio-codec-0 {
+        compatible = "maxim,max98357a";
+        #sound-dai-cells = <0>;
+    };
+
+    dmic_codec: dmic-codec {

Just dmic or audio-codec-1

Ack,

Yes right, should be audio-codec-1

will update in next version.

+        compatible = "dmic-codec";
+        #sound-dai-cells = <0>;
+        num-channels = <1>;
+    };
+
+    sound {
+        compatible = "qcom,qcs9075-sndcard";
+        model = "qcs9075-rb8-snd-card";

Were the bindings and the driver sent? Cover letter doesn't mention them. It is better to send them as a single patch series (this is the case for all subsys except net-next and trees maintained by Greg, e.g. USB).


https://lore.kernel.org/linux-sound/174773911882.44858.10139663344496764867.b4-ty@xxxxxxxxxx/

The Bindings and driver compatible change is already merged, Will add patch link in next version cover-letter.

Thanks & Regards,
Mohammad Rafi Shaik

+
+        pinctrl-0 = <&hs0_mi2s_active>, <&hs2_mi2s_active>;
+        pinctrl-names = "default";
+
+        hs0-mi2s-playback-dai-link {
+            link-name = "HS0 mi2s playback";
+
+            codec {
+                sound-dai = <&max98357a>;
+            };
+
+            cpu {
+                sound-dai = <&q6apmbedai PRIMARY_MI2S_RX>;
+            };
+
+            platform {
+                sound-dai = <&q6apm>;
+            };
+        };
+
+        hs2-mi2s-capture-dai-link {
+            link-name = "HS2 mi2s capture";
+
+            codec {
+                sound-dai = <&dmic_codec>;
+            };
+
+            cpu {
+                sound-dai = <&q6apmbedai TERTIARY_MI2S_TX>;
+            };
+
+            platform {
+                sound-dai = <&q6apm>;
+            };
+        };
+    };
  };