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  • In the imx6ull-9x9-evk.dts, there is a codec WM8960 connect to sai2. So, you can take it for reference.

    https://source.codeaurora.org/external/imx/linux-imx/tree/arch/arm/boot/dts/imx6qdl-sabresd.dtsi?h=r...

    There are two drivers for the audio codec. One is machine driver.

    https://source.codeaurora.org/external/imx/linux-imx/tree/sound/soc/fsl/imx-wm8960.c?h=rel_imx_4.1.1...

    And the other one is the codec driver.

    https://source.codeaurora.org/external/imx/linux-imx/tree/sound/soc/codecs/wm8960.c?h=rel_imx_4.1.15...

    And you may use the bt-sco driver as the codec driver.

    https://source.codeaurora.org/external/imx/linux-imx/tree/sound/soc/codecs/bt-sco.c?h=rel_imx_4.1.15...

    And then take other machine driver for reference to write the machine driver for your BT.

    In the imx6ull-9x9-evk.dts, there is a codec WM8960 connect to sai2. So, you can take it for reference.

    https://source.codeaurora.org/external/imx/linux-imx/tree/arch/arm/boot/dts/imx6qdl-sabresd.dtsi?h=r...

    There are two drivers for the audio codec. One is machine driver.

    https://source.codeaurora.org/external/imx/linux-imx/tree/sound/soc/fsl/imx-wm8960.c?h=rel_imx_4.1.1...

    And the other one is the codec driver.

    https://source.codeaurora.org/external/imx/linux-imx/tree/sound/soc/codecs/wm8960.c?h=rel_imx_4.1.15...

    And you may use the bt-sco driver as the codec driver.

    https://source.codeaurora.org/external/imx/linux-imx/tree/sound/soc/codecs/bt-sco.c?h=rel_imx_4.1.15...

    And then take other machine driver for reference to write the machine driver for your BT.