Orangepi-5-plus-Gnome with kernel-6.1.75-vendor-rk35xx able to detect EMMC with "lsblk" (SPI loaded).
$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
sda 8:0 1 3.6G 0 disk
└─sda1 8:1 1 3.6G 0 part /media/jfl/5B21D34023086316
mtdblock0 31:0 0 16M 0 disk
mmcblk1 179:0 0 57.6G 0 disk
└─mmcblk1p1 179:1 0 57G 0 part /var/log.hdd
/
mmcblk0 179:32 0 233G 0 disk
mmcblk0boot0 179:64 0 4M 1 disk
mmcblk0boot1 179:96 0 4M 1 disk
zram0 252:0 0 7.8G 0 disk [SWAP]
zram1 252:1 0 50M 0 disk /var/log
zram2 252:2 0 0B 0 disk
nvme0n1 259:0 0 476.9G 0 disk
├─nvme0n1p1 259:1 0 512M 0 part
└─nvme0n1p2 259:2 0 476.4G 0 part