root@TinaLinux:/lib/modules/5.4.61# i2cdetect 2
WARNING! This program can confuse your I2C bus, cause data loss and worse!
I will probe file /dev/i2c-2.
I will probe address range 0x03-0x77.
Continue? [Y/n] y
     0  1  2  3  4  5  6  7  8  [ 7426.138537] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
9  a  b  c  d  e  f
00:        [ 7426.149268] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x3)
  -- [ 7426.159610] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.168022] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x4)
-- [ 7426.175631] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.183924] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x5)
-- [ 7426.191503] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.199812] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x6)
-- [ 7426.207420] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.215712] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x7)
-- [ 7426.223294] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.231584] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x8)
-- [ 7426.239181] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.247531] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x9)
-- [ 7426.255143] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.263414] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0xa)
-- [ 7426.271059] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.279329] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0xb)
-- [ 7426.286972] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.295239] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0xc)
-- [ 7426.302855] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.311132] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0xd)
-- [ 7426.318768] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.327043] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0xe)
-- [ 7426.334684] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.342952] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0xf)
-- [ 7426.350615] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received

10: [ 7426.358867] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x10)
-- [ 7426.367095] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.375370] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x11)
-- [ 7426.383063] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.391339] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x12)
-- [ 7426.399062] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.407366] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x13)
-- [ 7426.415125] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.423393] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x14)
-- [ 7426.431098] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.439437] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x15)
-- [ 7426.447157] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.455445] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x16)
-- [ 7426.463123] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.471417] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x17)
-- [ 7426.479120] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.487413] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x18)
-- [ 7426.495117] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.503405] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x19)
-- [ 7426.511119] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.519407] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x1a)
-- [ 7426.527111] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.535404] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x1b)
-- [ 7426.543082] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.551370] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x1c)
-- [ 7426.559071] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.567363] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x1d)
-- [ 7426.575070] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.583354] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x1e)
-- [ 7426.591059] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.599333] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x1f)
-- [ 7426.607084] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received

20: [ 7426.615424] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x20)
-- [ 7426.623546] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.631819] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x21)
-- [ 7426.639554] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.647830] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x22)
-- [ 7426.655566] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.663844] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x23)
-- [ 7426.671538] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.679817] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x24)
-- [ 7426.687549] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.695827] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x25)
-- [ 7426.703520] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.711796] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x26)
-- [ 7426.719527] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.727805] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x27)
-- [ 7426.735540] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.743819] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x28)
-- [ 7426.751512] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.759792] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x29)
-- [ 7426.767544] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.775822] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x2a)
-- [ 7426.783500] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.791792] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x2b)
-- [ 7426.799495] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.807788] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x2c)
-- [ 7426.815488] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.823801] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x2d)
-- [ 7426.831479] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.839771] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x2e)
-- [ 7426.847475] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.855767] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x2f)
-- [ 7426.863490] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x30)

30: [ 7426.871387] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x31)
-- [ 7426.879438] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x32)
-- -- [ 7426.887322] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x33)
-- [ 7426.895381] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x34)
-- [ 7426.903255] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x35)
-- [ 7426.911146] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x36)
-- [ 7426.919077] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x37)
-- [ 7426.926949] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.935260] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x38)
-- [ 7426.942939] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.951224] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x39)
-- [ 7426.958963] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.967237] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x3a)
-- [ 7426.974978] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.983246] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x3b)
-- [ 7426.990985] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7426.999256] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x3c)
-- [ 7427.006997] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.015273] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x3d)
-- [ 7427.022965] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.031258] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x3e)
-- [ 7427.038989] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.047266] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x3f)
-- [ 7427.055023] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received

40: [ 7427.063280] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x40)
-- [ 7427.071507] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.079777] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x41)
-- [ 7427.087516] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.095793] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x42)
-- [ 7427.103504] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.111779] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x43)
-- [ 7427.119476] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.127764] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x44)
-- [ 7427.135475] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.143769] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x45)
-- [ 7427.151446] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.159742] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x46)
-- [ 7427.167448] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.175740] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x47)
-- [ 7427.183418] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.191709] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x48)
-- [ 7427.199408] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.207700] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x49)
-- [ 7427.215406] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.223691] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x4a)
-- [ 7427.231399] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.239700] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x4b)
-- [ 7427.247405] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.255700] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x4c)
-- [ 7427.263379] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.271673] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x4d)
-- [ 7427.279371] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.287699] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x4e)
-- [ 7427.295441] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.303710] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x4f)
-- [ 7427.311495] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x50)

50: [ 7427.319347] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x51)
-- -- [ 7427.327494] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x52)
-- [ 7427.335542] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x53)
-- [ 7427.343450] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x54)
-- [ 7427.351337] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x55)
-- [ 7427.359253] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x56)
-- [ 7427.367144] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x57)
-- [ 7427.375064] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x58)
-- [ 7427.382919] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x59)
-- [ 7427.390845] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x5a)
-- [ 7427.398722] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x5b)
-- [ 7427.406644] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x5c)
-- [ 7427.414530] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x5d)
-- [ 7427.422422] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x5e)
-- [ 7427.430313] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x5f)
-- [ 7427.438186] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received

60: [ 7427.446532] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x60)
-- [ 7427.454656] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.462942] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x61)
-- [ 7427.470654] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.478940] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x62)
-- [ 7427.486645] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.494940] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x63)
-- [ 7427.502615] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.510910] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x64)
-- [ 7427.518609] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.526903] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x65)
-- [ 7427.534604] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.542893] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x66)
-- [ 7427.550606] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.558895] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x67)
-- [ 7427.566598] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.574893] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x68)
-- [ 7427.582568] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.590861] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x69)
-- [ 7427.598560] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.606840] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x6a)
-- [ 7427.614577] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.622849] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x6b)
-- [ 7427.630585] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.638858] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x6c)
-- [ 7427.646592] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.654895] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x6d)
-- [ 7427.662591] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.670867] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x6e)
-- [ 7427.678604] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.686878] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x6f)
-- [ 7427.694634] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received

70: [ 7427.702888] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x70)
-- [ 7427.711118] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.719388] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x71)
-- [ 7427.727125] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.735401] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x72)
-- [ 7427.743094] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.751374] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x73)
-- [ 7427.759111] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.767389] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x74)
-- [ 7427.775143] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.783415] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x75)
-- [ 7427.791116] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.799409] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x76)
-- [ 7427.807116] sunxi-i2c sunxi-i2c2: SLA+W has been transmitted; ACK not received
[ 7427.815408] sunxi-i2c sunxi-i2c2: engine-mode: xfer failed(dev addr:0x77)
--