[TinkerBoard 2S][Debian 11 - 3.0.11] HDMI Audio Not Working with custom kernel(5.10)

[[TinkerBoard 2S][Debian 11 - 3.0.11] HDMI Audio Not Working with custom kernel(5.10)]

hello @tooz,

HDMI audio worked.
thank you.

[[TinkerBoard 2S][Debian 11 - 3.0.11] HDMI Audio Not Working with custom kernel(5.10)]

Hello,
I build a custom kernel using the following steps on tinkerboard 2S, but there is no sound from the HDMI-connected display. 

    (build almost according to Wiki - Developer Guide)
    (1 to 3 were executed on ubuntu-x86_64)

    1.source download

        $ repo init -u https://github.com/TinkerBoard-Linux/rockchip-linux-manifest.git -b linux5.10-rk3399-debian11
        $ repo sync

    2.docker start

        $ cd linux5.10-rk3399-debian11
        $ ./docker_builder/docker-builder-run.sh

    3.build

        $ ./build.sh rockchip_rk3399_tinker_board_2_debian_defconfig
        $ ./build.sh

    4.bring kernel/boot.img to tinkerboard 2S launched using the released Tinker Board 2/2S Debian 11 (kernel 5.10) V3.0.11 and replace the kernel

        $ sudo dd if=boot.img of=/dev/mmcblk1p4
        $ sudo reboot

Tinker Board 2/2S Debian 11 (kernel 5.10) V3.0.11 leave it as is, there will be sound from the HDMI-connected display, but replace it with the custom kernel, there will be no sound.

        $ speaker-test -D plughw:1,0 -t sine -f 440

How can I output sound from an HDMI-connected display using custom kernel (5.10)?