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From: Shengjiu Wang <shengjiu.wang@nxp.com>
To: robh+dt@kernel.org,
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	conor+dt@kernel.org,
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Cc: shengjiu.wang@gmail.com
Subject: [PATCH v2 1/2] arm64: dts: imx8mp-evk: Add HDMI audio sound card support
Date: Tue, 27 Feb 2024 15:03:25 +0800
Message-Id: <1709017406-12624-1-git-send-email-shengjiu.wang@nxp.com>
Precedence: bulk

The AUD2HTX is a digital module that provides a bridge between
the Audio Subsystem and the HDMI RTX Subsystem. This
module includes intermediate storage to queue SDMA transactions
prior to being synchronized and passed to the HDMI
RTX Subsystem over the Audio Link.

AUD2HTX works as the cpu dai in HDMI audio sound card.

Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
---

changes in v2:
- remove 'status' in sound-hdmi

 arch/arm64/boot/dts/freescale/imx8mp-evk.dts | 11 +++++++++++
 arch/arm64/boot/dts/freescale/imx8mp.dtsi    | 10 ++++++++++
 2 files changed, 21 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
index f87fa5a948cc..0fc6c0d21cd6 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
@@ -138,6 +138,13 @@ simple-audio-card,codec {
 
 	};
 
+	sound-hdmi {
+		compatible = "fsl,imx-audio-hdmi";
+		model = "audio-hdmi";
+		audio-cpu = <&aud2htx>;
+		hdmi-out;
+	};
+
 	reserved-memory {
 		#address-cells = <2>;
 		#size-cells = <2>;
@@ -191,6 +198,10 @@ &A53_3 {
 	cpu-supply = <&reg_arm>;
 };
 
+&aud2htx {
+	status = "okay";
+};
+
 &eqos {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_eqos>;
diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
index 9ab9c057f41e..721ab630d895 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
@@ -1513,6 +1513,16 @@ micfil: audio-controller@30ca0000 {
 					status = "disabled";
 				};
 
+				aud2htx: aud2htx@30cb0000 {
+					compatible = "fsl,imx8mp-aud2htx";
+					reg = <0x30cb0000 0x10000>;
+					interrupts = <GIC_SPI 130 IRQ_TYPE_LEVEL_HIGH>;
+					clocks = <&audio_blk_ctrl IMX8MP_CLK_AUDIOMIX_AUD2HTX_IPG>;
+					clock-names = "bus";
+					dmas = <&sdma2 26 2 0>;
+					dma-names = "tx";
+					status = "disabled";
+				};
 			};
 
 			sdma3: dma-controller@30e00000 {
-- 
2.34.1