linux-kernel - [PATCH v2 5/6] arm64: dts: imx943-evk: add bt-sco sound card support

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Message-Id: <20250528015837.488376-6-shengjiu.wang@nxp.com>
Date: Wed, 28 May 2025 09:58:36 +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,
	carlos.song@....com
Subject: [PATCH v2 5/6] arm64: dts: imx943-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>
Reviewed-by: Frank Li <Frank.Li@....com>
---
 arch/arm64/boot/dts/freescale/imx943-evk.dts | 56 ++++++++++++++++++++
 1 file changed, 56 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx943-evk.dts b/arch/arm64/boot/dts/freescale/imx943-evk.dts
index da08aaa95904..85cec644dd92 100644
--- a/arch/arm64/boot/dts/freescale/imx943-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx943-evk.dts
@@ -20,6 +20,11 @@ aliases {
 		serial0 = &lpuart1;
 	};
 
+	bt_sco_codec: bt-sco-codec {
+		compatible = "linux,bt-sco";
+		#sound-dai-cells = <1>;
+	};
+
 	chosen {
 		stdout-path = &lpuart1;
 	};
@@ -59,6 +64,25 @@ linux,cma {
 		};
 	};
 
+	sound-bt-sco {
+		compatible = "simple-audio-card";
+		simple-audio-card,bitclock-inversion;
+		simple-audio-card,bitclock-master = <&btcpu>;
+		simple-audio-card,format = "dsp_a";
+		simple-audio-card,frame-master = <&btcpu>;
+		simple-audio-card,name = "bt-sco-audio";
+
+		simple-audio-card,codec {
+			sound-dai = <&bt_sco_codec 1>;
+		};
+
+		btcpu: simple-audio-card,cpu {
+			dai-tdm-slot-num = <2>;
+			dai-tdm-slot-width = <16>;
+			sound-dai = <&sai3>;
+		};
+	};
+
 	sound-wm8962 {
 		compatible = "fsl,imx-audio-wm8962";
 		audio-codec = <&wm8962>;
@@ -290,6 +314,12 @@ pcal6416_i2c6_u44: gpio@20 {
 				#gpio-cells = <2>;
 				gpio-controller;
 
+				sai3-sel-hog {
+					gpios = <11 GPIO_ACTIVE_HIGH>;
+					gpio-hog;
+					output-high;
+				};
+
 				/* eMMC IOMUX selection */
 				sd1-sel-hog {
 					gpios = <0 GPIO_ACTIVE_HIGH>;
@@ -331,6 +361,23 @@ &sai1 {
 	status = "okay";
 };
 
+&sai3 {
+	assigned-clocks = <&scmi_clk IMX94_CLK_AUDIOPLL1_VCO>,
+			  <&scmi_clk IMX94_CLK_AUDIOPLL2_VCO>,
+			  <&scmi_clk IMX94_CLK_AUDIOPLL1>,
+			  <&scmi_clk IMX94_CLK_AUDIOPLL2>,
+			  <&scmi_clk IMX94_CLK_SAI3>;
+	assigned-clock-parents = <0>, <0>, <0>, <0>,
+				 <&scmi_clk IMX94_CLK_AUDIOPLL1>;
+	assigned-clock-rates = <3932160000>,
+			       <3612672000>, <393216000>,
+			       <361267200>, <12288000>;
+	pinctrl-0 = <&pinctrl_sai3>;
+	pinctrl-names = "default";
+	fsl,sai-mclk-direction-output;
+	status = "okay";
+};
+
 &scmi_iomuxc {
 
 	pinctrl_ioexpander_int2: ioexpanderint2grp {
@@ -376,6 +423,15 @@ IMX94_PAD_I2C2_SDA__SAI1_MCLK		0x31e
 		>;
 	};
 
+	pinctrl_sai3: sai3grp {
+		fsl,pins = <
+			IMX94_PAD_GPIO_IO42__SAI3_TX_BCLK	0x31e
+			IMX94_PAD_GPIO_IO56__SAI3_TX_SYNC	0x31e
+			IMX94_PAD_GPIO_IO46__SAI3_RX_DATA0	0x31e
+			IMX94_PAD_GPIO_IO47__SAI3_TX_DATA0	0x31e
+		>;
+	};
+
 	pinctrl_uart1: uart1grp {
 		fsl,pins = <
 			IMX94_PAD_UART1_TXD__LPUART1_TX		0x31e
-- 
2.34.1