【求助】Hi3531d的IT6801初始化问题

HDMI转BT1120，采用IT6801fn芯片，海思3531d系统上，初始化it6801出现问题。请高手出手相助

自写的初始化脚本如下（也不知这样对不对）
#!  /bin/sh
i2c_write 0 0x90 0x0f 0x00 1 1
i2c_write 0 0x90 0x10 0x08 1 1
i2c_write 0 0x90 0x10 0x17 1 1
i2c_write 0 0x90 0x11 0x1f 1 1
i2c_write 0 0x90 0x18 0x1f 1 1
i2c_write 0 0x90 0x12 0xf8 1 1
i2c_write 0 0x90 0x10 0x10 1 1
i2c_write 0 0x90 0x11 0xa0 1 1
i2c_write 0 0x90 0x18 0xa0 1 1
i2c_write 0 0x90 0x12 0x00 1 1
i2c_write 0 0x90 0x0f 0x01 1 1
i2c_write 0 0x90 0xc0 0x00 1 1
i2c_write 0 0x90 0x0f 0x00 1 1
i2c_write 0 0x90 0x17 0x80 1 1
i2c_write 0 0x90 0x1e 0x00 1 1
i2c_write 0 0x90 0x0e 0xff 1 1
i2c_write 0 0x90 0x86 0xc9 1 1
i2c_write 0 0x90 0x16 0x08 1 1
i2c_write 0 0x90 0x1d 0x08 1 1

i2c_write 0 0x90 0x2b 0x07 1 1
i2c_write 0 0x90 0x31 0x2c 1 1
i2c_write 0 0x90 0x34 0xe1 1 1
i2c_write 0 0x90 0x35 0x01 1 1
i2c_write 0 0x90 0x54 0x09 1 1
i2c_write 0 0x90 0x6a 0x81 1 1
i2c_write 0 0x90 0x74 0xa0 1 1
i2c_write 0 0x90 0x50 0x12 1 1
i2c_write 0 0x90 0x65 0x08 1 1
i2c_write 0 0x90 0x7a 0x80 1 1
i2c_write 0 0x90 0x85 0x02 1 1
i2c_write 0 0x90 0xc0 0x00 1 1
i2c_write 0 0x90 0x87 0xa9 1 1
i2c_write 0 0x90 0x71 0x00 1 1
i2c_write 0 0x90 0x37 0x88 1 1
i2c_write 0 0x90 0x4d 0x88 1 1
i2c_write 0 0x90 0x67 0x00 1 1
i2c_write 0 0x90 0x7a 0x70 1 1
i2c_write 0 0x90 0x7e 0x00 1 1
i2c_write 0 0x90 0x52 0x20 1 1
i2c_write 0 0x90 0x53 0x40 1 1
i2c_write 0 0x90 0x58 0xab 1 1
i2c_write 0 0x90 0x59 0xaa 1 1
i2c_write 0 0x90 0x0f 0x01 1 1
i2c_write 0 0x90 0xbc 0x06 1 1
i2c_write 0 0x90 0xb5 0x03 1 1
i2c_write 0 0x90 0xb6 0x00 1 1

i2c_write 0 0x90 0xb1 0x20 1 1
i2c_write 0 0x90 0xb2 0x01 1 1
i2c_write 0 0x90 0x0f 0x00 1 1
i2c_write 0 0x90 0x25 0x1f 1 1
i2c_write 0 0x90 0x3d 0x1f 1 1
i2c_write 0 0x90 0x27 0x1f 1 1
i2c_write 0 0x90 0x28 0x1f 1 1
i2c_write 0 0x90 0x29 0x1f 1 1
i2c_write 0 0x90 0x3f 0x1f 1 1
i2c_write 0 0x90 0x40 0x1f 1 1
i2c_write 0 0x90 0x41 0x1f 1 1
i2c_write 0 0x90 0x22 0x00 1 1
i2c_write 0 0x90 0x26 0x00 1 1
i2c_write 0 0x90 0x3a 0x00 1 1
i2c_write 0 0x90 0x3e 0x00 1 1
i2c_write 0 0x90 0x20 0x3f 1 1
i2c_write 0 0x90 0x38 0x3f 1 1