linux-kernel - [PATCH v3 1/3] arm64: dts: imx8mm-evk: add bt-sco sound card support

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Date:   Tue, 21 Jun 2022 10:16:01 +0800
From:   Shengjiu Wang <shengjiu.wang@....com>
To:     robh+dt@...nel.org, shawnguo@...nel.org, s.hauer@...gutronix.de,
        kernel@...gutronix.de, festevam@...il.com, linux-imx@....com,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Cc:     shengjiu.wang@...il.com
Subject: [PATCH v3 1/3] arm64: dts: imx8mm-evk: add bt-sco sound card support

Add bt-sco sound card, which supports wb profile as default

Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
---
 arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi | 43 +++++++++++++++++++
 1 file changed, 43 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
index c42b966f7a64..7d6317d95b13 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-evk.dtsi
@@ -75,6 +75,11 @@
 		linux,autosuspend-period = <125>;
 	};
 
+	audio_codec_bt_sco: audio-codec-bt-sco {
+		compatible = "linux,bt-sco";
+		#sound-dai-cells = <1>;
+	};
+
 	wm8524: audio-codec {
 		#sound-dai-cells = <0>;
 		compatible = "wlf,wm8524";
@@ -83,6 +88,25 @@
 		wlf,mute-gpios = <&gpio5 21 GPIO_ACTIVE_LOW>;
 	};
 
+	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-wm8524 {
 		compatible = "simple-audio-card";
 		simple-audio-card,name = "wm8524-audio";
@@ -346,6 +370,16 @@
 	status = "okay";
 };
 
+&sai2 {
+	#sound-dai-cells = <0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&pinctrl_sai2>;
+	assigned-clocks = <&clk IMX8MM_CLK_SAI2>;
+	assigned-clock-parents = <&clk IMX8MM_AUDIO_PLL1_OUT>;
+	assigned-clock-rates = <24576000>;
+	status = "okay";
+};
+
 &sai3 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_sai3>;
@@ -494,6 +528,15 @@
 		>;
 	};
 
+	pinctrl_sai2: sai2grp {
+		fsl,pins = <
+			MX8MM_IOMUXC_SAI2_TXC_SAI2_TX_BCLK      0xd6
+			MX8MM_IOMUXC_SAI2_TXFS_SAI2_TX_SYNC     0xd6
+			MX8MM_IOMUXC_SAI2_TXD0_SAI2_TX_DATA0    0xd6
+			MX8MM_IOMUXC_SAI2_RXD0_SAI2_RX_DATA0    0xd6
+		>;
+	};
+
 	pinctrl_sai3: sai3grp {
 		fsl,pins = <
 			MX8MM_IOMUXC_SAI3_TXFS_SAI3_TX_SYNC     0xd6
-- 
2.17.1