linux-kernel - [PATCH 2/2] arm64: dts: imx8mp-evk: add bt-sco sound card support

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Message-Id: <1715231698-451-3-git-send-email-shengjiu.wang@nxp.com>
Date: Thu,  9 May 2024 13:14:58 +0800
From: Shengjiu Wang <shengjiu.wang@....com>
To: robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	shawnguo@...nel.org,
	s.hauer@...gutronix.de,
	kernel@...gutronix.de,
	festevam@...il.com,
	devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	shengjiu.wang@...il.com
Subject: [PATCH 2/2] arm64: dts: imx8mp-evk: add bt-sco sound card support

Add bt-sco sound card, which is used by BT HFP case.
It supports wb profile as default

Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
---
 arch/arm64/boot/dts/freescale/imx8mp-evk.dts | 44 ++++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
index 8be5b2a57f27..b2225cb710b6 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
@@ -114,6 +114,11 @@ reg_vext_3v3: regulator-vext-3v3 {
 		regulator-max-microvolt = <3300000>;
 	};
 
+	audio_codec_bt_sco: audio-codec-bt-sco {
+		compatible = "linux,bt-sco";
+		#sound-dai-cells = <1>;
+	};
+
 	sound {
 		compatible = "simple-audio-card";
 		simple-audio-card,name = "wm8960-audio";
@@ -145,6 +150,25 @@ simple-audio-card,codec {
 
 	};
 
+	sound-bt-sco {
+		compatible = "simple-audio-card";
+		simple-audio-card,name = "bt-sco-audio";
+		simple-audio-card,format = "dsp_a";
+		simple-audio-card,bitclock-inversion;
+		simple-audio-card,frame-master = <&btcpu>;
+		simple-audio-card,bitclock-master = <&btcpu>;
+
+		btcpu: simple-audio-card,cpu {
+			sound-dai = <&sai2>;
+			dai-tdm-slot-num = <2>;
+			dai-tdm-slot-width = <16>;
+		};
+
+		simple-audio-card,codec {
+			sound-dai = <&audio_codec_bt_sco 1>;
+		};
+	};
+
 	sound-hdmi {
 		compatible = "fsl,imx-audio-hdmi";
 		model = "audio-hdmi";
@@ -608,6 +632,17 @@ &pwm4 {
 	status = "okay";
 };
 
+&sai2 {
+	#sound-dai-cells = <0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_sai2>;
+	assigned-clocks = <&clk IMX8MP_CLK_SAI2>;
+	assigned-clock-parents = <&clk IMX8MP_AUDIO_PLL1_OUT>;
+	assigned-clock-rates = <12288000>;
+	fsl,sai-mclk-direction-output;
+	status = "okay";
+};
+
 &sai3 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_sai3>;
@@ -880,6 +915,15 @@ MX8MP_IOMUXC_UART3_TXD__UART1_DCE_RTS	0x140
 		>;
 	};
 
+	pinctrl_sai2: sai2grp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SAI2_TXC__AUDIOMIX_SAI2_TX_BCLK	0xd6
+			MX8MP_IOMUXC_SAI2_TXFS__AUDIOMIX_SAI2_TX_SYNC	0xd6
+			MX8MP_IOMUXC_SAI2_TXD0__AUDIOMIX_SAI2_TX_DATA00	0xd6
+			MX8MP_IOMUXC_SAI2_RXD0__AUDIOMIX_SAI2_RX_DATA00	0xd6
+		>;
+	};
+
 	pinctrl_sai3: sai3grp {
 		fsl,pins = <
 			MX8MP_IOMUXC_SAI3_TXFS__AUDIOMIX_SAI3_TX_SYNC	0xd6
-- 
2.34.1