spidev for DE0-Nano-Soc

[Altera_Forum]

I have bought terasic DE0-Nano-Soc board and startup the board. I can see spidev under /dev . also i can use it to connect with my slave device. 

 I am new to soc concept, i want to build everything from scratch(same as default SD card) , for same i have followed RocketBoard  https://rocketboards.org/foswiki/documentation/embeddedlinuxbeginnersguide  (as i don’t found other source.)  after finishing evrything i have put new mmc card to board and there is no spidev under /dev in new linux i have deployed.  how can i generate de0-nano-soc mmc from scratch same as shipped with board?  i am struggling from long time for enabling spidev with soc.

[Altera_Forum]

I have got one method to build everything for de0-nano-soc board, 

 https://hackmd.io/iwqwlmdsweygtauzgnnmgbmanpekaoyeabjagmurmwjsccg=?view#3-build-linux-filesystem  i have follow this procedure , Board is booted successfully but while booting i got the error continuously as follows, I tried by changing the card, but result is same.     mmcblk0: retrying using single block read mmcblk0: error -110 transferring data, sector 31115616, nr 80, cmd response 0x900, card status 0x0 mmc_host mmc0: Bus speed (slot 0) = 200000000Hz (slot req 400000Hz, actual 400000HZ div = 250) mmc_host mmc0: Bus speed (slot 0) = 200000000Hz (slot req 25000000Hz, actual 25000000HZ div = 4) mmcblk0: error -110 transferring data, sector 31115616, nr 80, cmd response 0x900, card status 0x0 mmcblk0: retrying using single block read mmcblk0: error -110 transferring data, sector 31115704, nr 72, cmd response 0x900, card status 0x0 mmc_host mmc0: Bus speed (slot 0) = 200000000Hz (slot req 400000Hz, actual 400000HZ div = 250) mmc_host mmc0: Bus speed (slot 0) = 200000000Hz (slot req 25000000Hz, actual 25000000HZ div = 4) mmcblk0: error -110 transferring data, sector 31115704, nr 72, cmd response 0x900, card status 0x0   what can i do to clear this error?