K2Pro DVB-T2 not attach

[kaceo]

My box is "Viewqwest TV 5" which is a private-label K2Plus(2g RAM, 16g Storage, DVB-T2, S905 board). Installing COREELEC 8.96.3 with DTB set to S905 KII PRO, this is the dmesg error

   [   18.519037@0] DVB FE: Init AVL6862 frontend 0
   [   19.341835@1] i2c i2c-1: avl6862: i2c wr failed=-11 len=3
   [   19.342010@1] i2c i2c-1: avl6862: i2c rd failed=-11 len=4
   [   19.342240@1] i2c i2c-1: avl6862: i2c wr failed=-11 len=3
   [   19.342419@1] i2c i2c-1: avl6862: i2c rd failed=-11 len=4
   [   19.342424@1] i2c i2c-1: avl6862: attach failed reading id
   [   19.342435@1] DVB FE: avl6862_attach attach failed!!!

  # ls -R /dev/dvb/adapter0
  /dev/dvb/adapter0:
  demux0  demux1  demux2  dvr0    dvr1    dvr2    net0    net1    net2

Do you have any idea how I can make the DVB-T2 module work? I am new to this area of embedded Linux.