linux-kernel - [PATCH 2/5] arm64: dts: imx91-11x11-evk: Add bt-sco sound card support

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Message-ID: <20251203070605.1868821-3-chancel.liu@nxp.com>
Date: Wed,  3 Dec 2025 16:06:02 +0900
From: Chancel Liu <chancel.liu@....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
Subject: [PATCH 2/5] arm64: dts: imx91-11x11-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: Chancel Liu <chancel.liu@....com>
---
 .../boot/dts/freescale/imx91-11x11-evk.dts    | 53 +++++++++++++++++++
 1 file changed, 53 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx91-11x11-evk.dts b/arch/arm64/boot/dts/freescale/imx91-11x11-evk.dts
index 313ebc7e8a9c..55d2ccafc376 100644
--- a/arch/arm64/boot/dts/freescale/imx91-11x11-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx91-11x11-evk.dts
@@ -31,6 +31,11 @@ aliases {
 		serial4 = &lpuart5;
 	};
 
+	bt_sco_codec: bt-sco-codec {
+		compatible = "linux,bt-sco";
+		#sound-dai-cells = <1>;
+	};
+
 	chosen {
 		stdout-path = &lpuart1;
 	};
@@ -77,6 +82,25 @@ linux,cma {
 			linux,cma-default;
 		};
 	};
+
+	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>;
+
+		simple-audio-card,codec {
+			sound-dai = <&bt_sco_codec 1>;
+		};
+
+		btcpu: simple-audio-card,cpu {
+			sound-dai = <&sai1>;
+			dai-tdm-slot-num = <2>;
+			dai-tdm-slot-width = <16>;
+		};
+	};
 };
 
 &adc1 {
@@ -372,6 +396,17 @@ bluetooth {
 	};
 };
 
+&sai1 {
+	pinctrl-names = "default", "sleep";
+	pinctrl-0 = <&pinctrl_sai1>;
+	pinctrl-1 = <&pinctrl_sai1_sleep>;
+	assigned-clocks = <&clk IMX93_CLK_SAI1>;
+	assigned-clock-parents = <&clk IMX93_CLK_AUDIO_PLL>;
+	assigned-clock-rates = <12288000>;
+	fsl,sai-mclk-direction-output;
+	status = "okay";
+};
+
 &usbotg1 {
 	adp-disable;
 	disable-over-current;
@@ -528,6 +563,24 @@ MX91_PAD_I2C2_SDA__LPI2C2_SDA                           0x40000b9e
 		>;
 	};
 
+	pinctrl_sai1: sai1grp {
+		fsl,pins = <
+			MX91_PAD_SAI1_TXC__SAI1_TX_BCLK			0x31e
+			MX91_PAD_SAI1_TXFS__SAI1_TX_SYNC		0x31e
+			MX91_PAD_SAI1_TXD0__SAI1_TX_DATA0		0x31e
+			MX91_PAD_SAI1_RXD0__SAI1_RX_DATA0		0x31e
+		>;
+	};
+
+	pinctrl_sai1_sleep: sai1sleepgrp {
+		fsl,pins = <
+			MX91_PAD_SAI1_TXC__GPIO1_IO12			0x51e
+			MX91_PAD_SAI1_TXFS__GPIO1_IO11			0x51e
+			MX91_PAD_SAI1_TXD0__GPIO1_IO13			0x51e
+			MX91_PAD_SAI1_RXD0__GPIO1_IO14			0x51e
+		>;
+	};
+
 	pinctrl_lpi2c3: lpi2c3grp {
 		fsl,pins = <
 			MX91_PAD_GPIO_IO28__LPI2C3_SDA                          0x40000b9e
-- 
2.50.1