linux-kernel - Re: [PATCH 1/2] arm64: dts: imx93-14x14-evk: Add bt-sco sound card support

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Message-ID: <aS3ITHKoLF0ecw2o@lizhi-Precision-Tower-5810>
Date: Mon, 1 Dec 2025 11:54:36 -0500
From: Frank Li <Frank.li@....com>
To: Chancel Liu <chancel.liu@....com>
Cc: 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: Re: [PATCH 1/2] arm64: dts: imx93-14x14-evk: Add bt-sco sound card
 support

On Mon, Dec 01, 2025 at 03:58:43PM +0900, Chancel Liu wrote:
> 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>
> ---

Reviewed-by: Frank Li <Frank.Li@....com>

>  .../boot/dts/freescale/imx93-14x14-evk.dts    | 43 +++++++++++++++++++
>  1 file changed, 43 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/freescale/imx93-14x14-evk.dts b/arch/arm64/boot/dts/freescale/imx93-14x14-evk.dts
> index f9eebd27d640..e47fee24471a 100644
> --- a/arch/arm64/boot/dts/freescale/imx93-14x14-evk.dts
> +++ b/arch/arm64/boot/dts/freescale/imx93-14x14-evk.dts
> @@ -27,6 +27,11 @@ aliases {
>  		serial0 = &lpuart1;
>  	};
>
> +	bt_sco_codec: bt-sco-codec {
> +		compatible = "linux,bt-sco";
> +		#sound-dai-cells = <1>;
> +	};
> +
>  	chosen {
>  		stdout-path = &lpuart1;
>  	};
> @@ -168,6 +173,25 @@ reg_vref_1v8: regulator-adc-vref {
>  		regulator-max-microvolt = <1800000>;
>  	};
>
> +	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>;
> +		};
> +	};
> +
>  	usdhc3_pwrseq: usdhc3_pwrseq {
>  		compatible = "mmc-pwrseq-simple";
>  		reset-gpios = <&pcal6524 12 GPIO_ACTIVE_LOW>;
> @@ -371,6 +395,16 @@ &mu2 {
>  	status = "okay";
>  };
>
> +&sai1 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&pinctrl_sai1>;
> +	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 {
>  	dr_mode = "otg";
>  	hnp-disable;
> @@ -568,6 +602,15 @@ MX93_PAD_SD2_RESET_B__GPIO3_IO07	0x31e
>  		>;
>  	};
>
> +	pinctrl_sai1: sai1grp {
> +		fsl,pins = <
> +			MX93_PAD_SAI1_TXC__SAI1_TX_BCLK		0x31e
> +			MX93_PAD_SAI1_TXFS__SAI1_TX_SYNC	0x31e
> +			MX93_PAD_SAI1_TXD0__SAI1_TX_DATA00	0x31e
> +			MX93_PAD_SAI1_RXD0__SAI1_RX_DATA00	0x31e
> +		>;
> +	};
> +
>  	pinctrl_usdhc2_gpio: usdhc2gpiogrp {
>  		fsl,pins = <
>  			MX93_PAD_SD2_CD_B__GPIO3_IO00		0x31e
> --
> 2.50.1
>