ubuntu@ubuntu-desktop:~$ sudo cat /sys/kernel/debug/regmap/tegra210-i2s.0/registers
00: 00000000
04: XXXXXXXX
08: 00000000
0c: XXXXXXXX
10: XXXXXXXX
14: 00000003
18: 00000000
1c: 00000000
20: 00007700
24: 00000100
28: 00000000
2c: 00000000
30: 00000000
34: 00000000
38: 00000000
3c: 00000000
40: 00000000
44: XXXXXXXX
48: 00000000
4c: XXXXXXXX
50: XXXXXXXX
54: 00000003
58: 00000000
5c: 00000000
60: 00007700
64: 00000100
68: 00000000
6c: 00000000
70: 00000000
74: 00000000
78: 00000000
7c: 00000000
80: 00000001
84: 00000000
88: 00000001
8c: 00000000
90: XXXXXXXX
94: 00000000
98: 00000000
9c: 00000000
a0: 1f000000
a4: 0000001f
a8: 00000000
ac: 00000000
b0: 00000000