The rules here is useful if you want to create symbol links under /dev/block on a mainline kernel with ept names as link names
The kernel would need the following patchset and CONFIG_AMLOGIC_PARTITION=y to natively support such partitions (choose one convinient for your use case):
Also remember to set apt_blkdevs=all or apt_blkdevs=mmcblk2 in your kernel command line
Do not use the patchset or the udev rules if you're on CoreELEC or EmuELEC, the vendor kernel they use already supports such partitions and will create block devices under /dev with correct names
example dmesg output:
[ 1.392239] mmc2: new DDR MMC card at address 0001
[ 1.395820] mmcblk2: mmc2:0001 008G30 7.28 GiB
[ 1.402019] mmcblk2: p1(bootloader) p2(reserved) p3(cache) p4(env) p5(logo) p6(recovery) p7(rsv) p8(tee) p9(crypt) p10(misc) p11(instaboot) p12(boot) p13(system) p14(params) p15(data)
[ 1.418000] mmcblk2boot0: mmc2:0001 008G30 4.00 MiB
[ 1.422305] mmcblk2boot1: mmc2:0001 008G30 4.00 MiB
[ 1.426812] mmcblk2rpmb: mmc2:0001 008G30 4.00 MiB, chardev (244:0)
example lsblk output:
mmcblk2 179:32 0 7.3G 0 disk
├─mmcblk2p1 179:33 0 4M 0 part
├─mmcblk2p2 179:34 0 64M 0 part
├─mmcblk2p3 179:35 0 512M 0 part
├─mmcblk2p4 179:36 0 8M 0 part
├─mmcblk2p5 179:37 0 32M 0 part
├─mmcblk2p6 179:38 0 32M 0 part
├─mmcblk2p7 179:39 0 8M 0 part
├─mmcblk2p8 179:40 0 8M 0 part
├─mmcblk2p9 179:41 0 32M 0 part
├─mmcblk2p10 179:42 0 32M 0 part
├─mmcblk2p11 179:43 0 512M 0 part
├─mmcblk2p12 179:44 0 32M 0 part
├─mmcblk2p13 179:45 0 1G 0 part
├─mmcblk2p14 179:46 0 64M 0 part
└─mmcblk2p15 179:47 0 4.8G 0 part
example symbol links under /dev/block:
total 0
lrwxrwxrwx 1 root root 13 Feb 18 08:41 boot -> ../mmcblk2p12
lrwxrwxrwx 1 root root 13 Feb 18 08:41 bootloader -> ../mmcblk2p1
lrwxrwxrwx 1 root root 12 Feb 18 08:41 cache -> ../mmcblk2p3
lrwxrwxrwx 1 root root 12 Feb 18 08:41 crypt -> ../mmcblk2p9
lrwxrwxrwx 1 root root 13 Feb 18 08:41 data -> ../mmcblk2p15
lrwxrwxrwx 1 root root 12 Feb 18 08:41 env -> ../mmcblk2p4
lrwxrwxrwx 1 root root 13 Feb 18 08:41 instaboot -> ../mmcblk2p11
lrwxrwxrwx 1 root root 12 Feb 18 08:41 logo -> ../mmcblk2p5
lrwxrwxrwx 1 root root 12 Feb 18 08:41 misc -> ../mmcblk2p10
lrwxrwxrwx 1 root root 13 Feb 18 08:41 params -> ../mmcblk2p14
lrwxrwxrwx 1 root root 12 Feb 18 08:41 recovery -> ../mmcblk2p6
lrwxrwxrwx 1 root root 12 Feb 18 08:41 reserved -> ../mmcblk2p2
lrwxrwxrwx 1 root root 12 Feb 18 08:41 rsv -> ../mmcblk2p7
lrwxrwxrwx 1 root root 13 Feb 18 08:41 system -> ../mmcblk2p13
lrwxrwxrwx 1 root root 12 Feb 18 08:41 tee -> ../mmcblk2p8