BananaPi M1 boot freeze

Fri May 11 15:55:16 UTC 2018

It's a Allwinner A20 SoC, I'm booting the board with 12.0-CURRENT r333393

simplebus0: <i2s at 1c24400> mem 0x1c24400-0x1c247ff irq 43 disabled compat allwinner,sun4i-a10-i2s (no driver attached)
aw_ts0: <Allwinner Touch Screen controller> mem 0x1c25000-0x1c250ff irq 44 on simplebus0
random: harvesting attach, 8 bytes (4 bits) from aw_ts0
uart0: could not determine frequency
--- freeze ---

Any help?