ARM64: Renesas RZ platform Linux kernel support

I tested ARM(aarch64) Linux v9.4 on Renesas RZ platform RZ/G2L, RZ/G2LC, RZ/G2UL SMARC Board by Renesas -
The Linux boot fails due to serial driver name enabled.
Which Linux kernel version v9.4 is using? and the kernel source path to check the Linux arm64 config?
The RZ platform needs following serial config enabled: