u@ubu:~$ adb shell
my90ds:/ $ su
my90ds:/ # cd /
my90ds:/ # ls /dev/block -la
total 0
drwxr-xr-x  4 root root        620 2019-11-27 00:55 .
drwxr-xr-x 22 root root       4040 2019-11-27 01:00 ..
brw-------  1 root root     7,   0 2019-11-27 00:55 loop0
brw-------  1 root root     7,   1 2019-11-27 00:55 loop1
brw-------  1 root root     7,   2 2019-11-27 00:55 loop2
brw-------  1 root root     7,   3 2019-11-27 00:55 loop3
brw-------  1 root root     7,   4 2019-11-27 00:55 loop4
brw-------  1 root root     7,   5 2019-11-27 00:55 loop5
brw-------  1 root root     7,   6 2019-11-27 00:55 loop6
brw-------  1 root root     7,   7 2019-11-27 00:55 loop7
brw-rw----  1 root system 179,   0 2019-11-27 00:55 mmcblk0
brw-rw----  1 root system 179,  32 2019-11-27 00:55 mmcblk0boot0
brw-------  1 root root   179,  64 2019-11-27 00:55 mmcblk0boot1
brw-------  1 root root   179,   1 2019-11-27 00:55 mmcblk0p1
brw-------  1 root root   179,  10 2019-11-27 00:55 mmcblk0p10
brw-------  1 root root   179,  11 2019-11-27 00:55 mmcblk0p11
brw-------  1 root root   179,  12 2019-11-27 00:55 mmcblk0p12
brw-------  1 root root   179,   2 2019-11-27 00:55 mmcblk0p2
brw-------  1 root root   179,   3 2019-11-27 00:55 mmcblk0p3
brw-------  1 root root   179,   4 2019-11-27 00:55 mmcblk0p4
brw-------  1 root root   179,   5 2019-11-27 00:55 mmcblk0p5
brw-------  1 root root   179,   6 2019-11-27 00:55 mmcblk0p6
brw-------  1 root root   179,   7 2019-11-27 00:55 mmcblk0p7
brw-------  1 root root   179,   8 2019-11-27 00:55 mmcblk0p8
brw-------  1 root root   179,   9 2019-11-27 00:55 mmcblk0p9
brw-------  1 root root   179,  96 2019-11-27 00:55 mmcblk0rpmb
brw-------  1 root root   179, 128 2019-11-27 00:55 mmcblk1
brw-------  1 root root   179, 129 2019-11-27 00:55 mmcblk1p1
drwxr-xr-x  4 root root         80 2019-11-27 00:55 platform
drwx------  2 root root         80 2019-11-27 00:56 vold
brw-------  1 root root   254,   0 2019-11-27 00:55 zram0
my90ds:/ # ls /dev/block/platform -la
total 0
drwxr-xr-x 4 root root  80 2019-11-27 00:55 .
drwxr-xr-x 4 root root 620 2019-11-27 00:55 ..
drwxr-xr-x 3 root root 380 2019-11-27 00:55 mtk-msdc.0
drwxr-xr-x 4 root root 120 2019-11-27 00:55 mtk-msdc.1
my90ds:/ # ls /dev/block/platform/mtk-msdc.0 -la
total 0
drwxr-xr-x 3 root root 380 2019-11-27 00:55 .
drwxr-xr-x 4 root root  80 2019-11-27 00:55 ..
drwxr-xr-x 2 root root 280 2019-11-27 00:55 by-num
lrwxrwxrwx 1 root root  18 2019-11-27 00:55 mmcblk0 -> /dev/block/mmcblk0
lrwxrwxrwx 1 root root  23 2019-11-27 00:55 mmcblk0boot0 -> /dev/block/mmcblk0boot0
lrwxrwxrwx 1 root root  23 2019-11-27 00:55 mmcblk0boot1 -> /dev/block/mmcblk0boot1
lrwxrwxrwx 1 root root  20 2019-11-27 00:55 mmcblk0p1 -> /dev/block/mmcblk0p1
lrwxrwxrwx 1 root root  21 2019-11-27 00:55 mmcblk0p10 -> /dev/block/mmcblk0p10
lrwxrwxrwx 1 root root  21 2019-11-27 00:55 mmcblk0p11 -> /dev/block/mmcblk0p11
lrwxrwxrwx 1 root root  21 2019-11-27 00:55 mmcblk0p12 -> /dev/block/mmcblk0p12
lrwxrwxrwx 1 root root  20 2019-11-27 00:55 mmcblk0p2 -> /dev/block/mmcblk0p2
lrwxrwxrwx 1 root root  20 2019-11-27 00:55 mmcblk0p3 -> /dev/block/mmcblk0p3
lrwxrwxrwx 1 root root  20 2019-11-27 00:55 mmcblk0p4 -> /dev/block/mmcblk0p4
lrwxrwxrwx 1 root root  20 2019-11-27 00:55 mmcblk0p5 -> /dev/block/mmcblk0p5
lrwxrwxrwx 1 root root  20 2019-11-27 00:55 mmcblk0p6 -> /dev/block/mmcblk0p6
lrwxrwxrwx 1 root root  20 2019-11-27 00:55 mmcblk0p7 -> /dev/block/mmcblk0p7
lrwxrwxrwx 1 root root  20 2019-11-27 00:55 mmcblk0p8 -> /dev/block/mmcblk0p8
lrwxrwxrwx 1 root root  20 2019-11-27 00:55 mmcblk0p9 -> /dev/block/mmcblk0p9
lrwxrwxrwx 1 root root  22 2019-11-27 00:55 mmcblk0rpmb -> /dev/block/mmcblk0rpmb
my90ds:/ # ls /dev/block/platform/mtk-msdc.0/by-num -la
total 0
drwxr-xr-x 2 root root 280 2019-11-27 00:55 .
drwxr-xr-x 3 root root 380 2019-11-27 00:55 ..
lrwxrwxrwx 1 root root  20 2019-11-27 00:55 p1 -> /dev/block/mmcblk0p1
lrwxrwxrwx 1 root root  21 2019-11-27 00:55 p10 -> /dev/block/mmcblk0p10
lrwxrwxrwx 1 root root  21 2019-11-27 00:55 p11 -> /dev/block/mmcblk0p11
lrwxrwxrwx 1 root root  21 2019-11-27 00:55 p12 -> /dev/block/mmcblk0p12
lrwxrwxrwx 1 root root  20 2019-11-27 00:55 p2 -> /dev/block/mmcblk0p2
lrwxrwxrwx 1 root root  20 2019-11-27 00:55 p3 -> /dev/block/mmcblk0p3
lrwxrwxrwx 1 root root  20 2019-11-27 00:55 p4 -> /dev/block/mmcblk0p4
lrwxrwxrwx 1 root root  20 2019-11-27 00:55 p5 -> /dev/block/mmcblk0p5
lrwxrwxrwx 1 root root  20 2019-11-27 00:55 p6 -> /dev/block/mmcblk0p6
lrwxrwxrwx 1 root root  20 2019-11-27 00:55 p7 -> /dev/block/mmcblk0p7
lrwxrwxrwx 1 root root  20 2019-11-27 00:55 p8 -> /dev/block/mmcblk0p8
lrwxrwxrwx 1 root root  20 2019-11-27 00:55 p9 -> /dev/block/mmcblk0p9
my90ds:/ # ls /dev/block/platform/mtk-msdc.1 -la
total 0
drwxr-xr-x 4 root root 120 2019-11-27 00:55 .
drwxr-xr-x 4 root root  80 2019-11-27 00:55 ..
drwxr-xr-x 2 root root  60 2019-11-27 00:55 by-name
drwxr-xr-x 2 root root  60 2019-11-27 00:55 by-num
lrwxrwxrwx 1 root root  18 2019-11-27 00:55 mmcblk1 -> /dev/block/mmcblk1
lrwxrwxrwx 1 root root  20 2019-11-27 00:55 mmcblk1p1 -> /dev/block/mmcblk1p1
my90ds:/ # ls /dev/block/platform/mtk-msdc.1/by-num -la
total 0
drwxr-xr-x 2 root root  60 2019-11-27 00:55 .
drwxr-xr-x 4 root root 120 2019-11-27 00:55 ..
lrwxrwxrwx 1 root root  20 2019-11-27 00:55 p1 -> /dev/block/mmcblk1p1
my90ds:/ # ls /dev/block/platform/mtk-msdc.1/by-name -la
total 0
drwxr-xr-x 2 root root  60 2019-11-27 00:55 .
drwxr-xr-x 4 root root 120 2019-11-27 00:55 ..
lrwxrwxrwx 1 root root  20 2019-11-27 00:55 Microsoft_basic_data -> /dev/block/mmcblk1p1
my90ds:/ #