default or selected kernelversion does not have config value CONFIG_SND_SOC_ROCKCHIP_SPDIF.
Result is shown for kernelversion 6.9-rc5
Rockchip SPDIF Device Driver
modulename: snd-soc-rockchip-spdif.ko
configname: CONFIG_SND_SOC_ROCKCHIP_SPDIF
Linux Kernel Configuration
└─>Device Drivers
└─>Sound card support
└─>Advanced Linux Sound Architecture
└─>ALSA for SoC audio support
└─>Rockchip SPDIF Device Driver
In linux kernel since version 3.10 (release Date: 2013-06-30)
Say Y or M if you want to add support for SPDIF driver for
Rockchip SPDIF transceiver device.
Rockchip SPDIF transceiver device.