[RK3399 Legacy Multimedia Framework]

thanks a lot i will try to get it working - had errors before but didn´t use the rockchip repo before. so thanks for this 

[RK3399 Legacy Multimedia Framework]

quite short answer 

so no special magic u use ? 

some guidance you can give?

[RK3399 Legacy Multimedia Framework]

Hello 

i modified armbian build  script to get board images with 32bit userland and 64bit kernel. 

most time i´m using the rockpi4b board.  because of the 32bit userland i only get the armhf package (tinkerboard) but they only suppoert t76x mali .

is there a way you can provide a t86x package for the 32bit userland?! or how can i make it myself?

[rk3399 rockpi4 & wm8731 audioinjector stereo]

hello.

first i want to say thank you to every armbian supporter and the hole team. thanks for providing this nice project and your work.

 

i did some work for adding an external sound card - the audioinjector pi stereo, which is based on a wm8731.

i used the radxa rockpi4(b)  board based on the rk3399. i choose this board because of pinout header is nearly the same as the one you find on raspberrys. so adding/ using raspberry Hats won´t be too hart in this case.

this will also work with radxa kernel https://github.com/verplant23/kernel

so there shouldn´t be any troubles porting it to armbian legacy.

 

i´m not a coder and i don´t know about linux that much.  for most things this was try and error of code snippets + lot´s of time. 

i tried diffrent ways and there are diffrent ways how thing can be get to work - for sure you guys could make things work better because there are still errors while dmesg.

 

i used 20.05 dev kernel but basicly this also work on master or current. 

please post what you think of or how to improve.

 

install debs or build your own by adding userpatch from 

https://github.com/verplant23/armbian_patch.git

 

after installing / compiling follow up the armbian docs and add i2c7 by adding 

overlays=i2c7  

to your /boot/armbianEnv.txt

 

i wasn´t able to use armbian-add-overlay. because error told me that i don´t use the correct device...

you can use the dtbo inside repo. it was build with the radxa kernel repo (link above). you can find dts inside.  

add the folder /boot/overlay-user/  and copy audioinjector-wm8731-audio.dtbo inside

 

follow up the armbian docs and add 

user_overlays=audioinjector-wm8731-audio

to your /boot/armbianEnv.txt

 

after reboot 

cat /proc/asound/cards should show up the card

 

dmesg will show some error:

audioinjector-stereo sound-ext-card: snd_soc_register_card failed (-517)

 

but since dmesg | grep i2s will show

audioinjector-stereo sound-ext-card: wm8731-hifi <-> ff890000.i2s mapping ok

the device should work.

 

when getting no sound go to alsamixer and check the mute cases especially  Item: Output Mixer HiFi is not muted

 

you can make it sound-card-0 by default

sudo nano /etc/modprobe.d/alsa.conf

should be something like

alias snd-card-0 wm8731-hifi

alias snd-card-0 snd_soc_audioinjector_pi_soundcard
alias snd-card-0 snd_soc_simple_card
options snd slots=,hdmisound,rockchiprk3399,snd_soc_audio_graph_card

 

make sound-card-0 default device 

sudo nano /etc/asound.conf

defaults.pcm.card 0
defaults.ctl.card 0
 

have fun and keep healthy

 

[Rockcip DT Overlay GPIO]

Hello Marko Buršič

 

there are some explaination on the page u linked:

GPIO 4         D       5 = 157  

         4*32 + 3*8 + 5 = 157  

 

i don´t know what "0xae"  stands for but it could be something like pull up/down /activ low/high 

so wenn you see something like 

csgpio = <&gpio1 21 1 0xae> on rk3399 it would call  

translated to GPIO Number

          1*32 + 2*8 + 5 = 53

             32 +   16 + 5 = 53

             32  +   21      = 53

GPIO   1         C       5 = 53

 

but on the 40 Pin Header i can't find a pin number corrospondending to GPIO number 53.

so maybe you would like to call ?!

Pin#	GPIO	Function1	GPIO number
24	GP1B2	SPI1_CSn	42

 

you would write something like ( whatever 0xae mean)

 

csgpio = <&gpio1 10 1 0xae>;

 

          1*32 + 1*8 + 2 = 42

             32 +   8 + 2 = 42

             32  +   10     = 42

GPIO   1         B      2 = 42

 

but i´m just guessing