Add sound node and dsp-related piece to enable HDMI audio
playback support on Qualcomm QRB4210 RB2 board. That is the
only sound output supported for now.

Signed-off-by: Alexey Klimov <alexey.klimov@linaro.org>
---
 arch/arm64/boot/dts/qcom/qrb4210-rb2.dts | 55 ++++++++++++++++++++++++
 1 file changed, 55 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts b/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts
index 7731681688d5..b8bc4452ca48 100644
--- a/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts
+++ b/arch/arm64/boot/dts/qcom/qrb4210-rb2.dts
@@ -6,6 +6,8 @@
 /dts-v1/;
 
 #include <dt-bindings/leds/common.h>
+#include <dt-bindings/sound/qcom,q6afe.h>
+#include <dt-bindings/sound/qcom,q6asm.h>
 #include <dt-bindings/usb/pd.h>
 #include "sm4250.dtsi"
 #include "pm6125.dtsi"
@@ -103,6 +105,51 @@ led-wlan {
 		};
 	};
 
+	sound {
+		compatible = "qcom,qrb4210-rb2-sndcard";
+		pinctrl-0 = <&lpi_i2s2_active>;
+		pinctrl-names = "default";
+		model = "Qualcomm-RB2-WSA8815-Speakers-DMIC0";
+		audio-routing = "MM_DL1",  "MultiMedia1 Playback",
+				"MM_DL2",  "MultiMedia2 Playback";
+
+		mm1-dai-link {
+			link-name = "MultiMedia1";
+			cpu {
+				sound-dai = <&q6asmdai  MSM_FRONTEND_DAI_MULTIMEDIA1>;
+			};
+		};
+
+		mm2-dai-link {
+			link-name = "MultiMedia2";
+			cpu {
+				sound-dai = <&q6asmdai  MSM_FRONTEND_DAI_MULTIMEDIA2>;
+			};
+		};
+
+		mm3-dai-link {
+			link-name = "MultiMedia3";
+			cpu {
+				sound-dai = <&q6asmdai  MSM_FRONTEND_DAI_MULTIMEDIA3>;
+			};
+		};
+
+		hdmi-dai-link {
+			link-name = "HDMI Playback";
+			cpu {
+				sound-dai = <&q6afedai SECONDARY_MI2S_RX>;
+			};
+
+			platform {
+				sound-dai = <&q6routing>;
+			};
+
+			codec {
+				sound-dai = <&lt9611_codec 0>;
+			};
+		};
+	};
+
 	vreg_hdmi_out_1p2: regulator-hdmi-out-1p2 {
 		compatible = "regulator-fixed";
 		regulator-name = "VREG_HDMI_OUT_1P2";
@@ -318,6 +365,14 @@ &pon_resin {
 	status = "okay";
 };
 
+/* SECONDARY I2S Uses 1 I2S SD Lines for audio on LT9611 HDMI Bridge */
+&q6afedai {
+	dai@20 {
+		reg = <SECONDARY_MI2S_RX>;
+		qcom,sd-lines = <0>;
+	};
+};
+
 &qupv3_id_0 {
 	status = "okay";
 };
-- 
2.45.2

On Wed, Oct 02, 2024 at 03:20:15AM GMT, Alexey Klimov wrote:
> Add sound node and dsp-related piece to enable HDMI audio
> playback support on Qualcomm QRB4210 RB2 board. That is the
> only sound output supported for now.
> 
> Signed-off-by: Alexey Klimov <alexey.klimov@linaro.org>
> ---
>  arch/arm64/boot/dts/qcom/qrb4210-rb2.dts | 55 ++++++++++++++++++++++++
>  1 file changed, 55 insertions(+)
> 

[...]
> @@ -318,6 +365,14 @@ &pon_resin {
>  	status = "okay";
>  };
>  
> +/* SECONDARY I2S Uses 1 I2S SD Lines for audio on LT9611 HDMI Bridge */

Nit: LT9611UXC

Nevertheless,

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>


> +&q6afedai {
> +	dai@20 {
> +		reg = <SECONDARY_MI2S_RX>;
> +		qcom,sd-lines = <0>;
> +	};
> +};
> +
>  &qupv3_id_0 {
>  	status = "okay";
>  };
> -- 
> 2.45.2
> 

-- 
With best wishes
Dmitry