does anybody know how can i enable the spdif output  using debian stretch 9.3 odroid n-1 3399

any help appreciated

What does aplay -l list as devices? Do you have a asound.conf that includes those interfaces?

 aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: HDMICODEC [HDMI-CODEC], device 0: ff8a0000.i2s-i2s-hifi i2s-hifi-0 []
  Subdevices: 1/1
  Subdevice #0: subdevice #0

 

no i dont think i have asound.conf in my dir-tree

no i dont have /etc/asound.conf

 

but i can make one i think..????

Well first you have to see why the SPDIF output driver is not loaded, can you pastebin your devicetree?

how i googled it but found mixed or incoherrent answers..can you give me the syntax to do so ..i can give you my dmesg if you like

oh i am using debian strecth 9.3 if that is of any help

 

nvm found it...

 

https://github.com/hardkernel/linux/blob/odroidn1-4.4.y/arch/arm64/boot/dts/rockchip/rk3399-odroidn1-linux.dts

 

It doesnt seem to enable the SPDIF node atm...

 

SPDIF node is defined here,

https://github.com/hardkernel/linux/blob/odroidn1-4.4.y/arch/arm64/boot/dts/rockchip/rk3399.dtsi#L1658

 

so it has to be instantiated in the board dts by checking the schematics...

 

You can look at other RK3399 boards for that, but try at your own risk since I dont have the N1 to verify that works for your HW:

 

 

&spdif {
	status = "okay";
	pinctrl-0 = <&spdif_bus_1>;
	i2c-scl-rising-time-ns = <450>;
	i2c-scl-falling-time-ns = <15>;
	#sound-dai-cells = <0>;
};
      
	spdif-sound {
		status = "okay";
		compatible = "simple-audio-card";
		simple-audio-card,name = "ROCKCHIP,SPDIF";
		simple-audio-card,cpu {
			sound-dai = <&spdif>;
		};
		simple-audio-card,codec {
			sound-dai = <&spdif_out>;
		};
	};

	spdif_out: spdif-out {
		status = "okay";
		compatible = "linux,spdif-dit";
		#sound-dai-cells = <0>;
	}

 

what file do i put that code into ..??

 

although it looks ok from my little know how with code...!!!

apt install device-tree-compiler
cd /media/boot/
dtc -I dtb -O dts -o rk3399-odroidn1-linux.dts rk3399-odroidn1-linux.dtb 
cp rk3399-odroidn1-linux.dts rk3399-odroidn1-linux-mod.dts

Then you tweak rk3399-odroidn1-linux-mod.dts and afterwards:

dtc -I dts -O dtb -o rk3399-odroidn1-linux.dtb rk3399-odroidn1-linux-mod.dts

If something goes wrong your board might not even boot any more afterwards. And you'll get a ton of warning with the above, see https://forum.armbian.com/topic/6496-odroid-n1-not-a-review-yet/?do=findComment&comment=49438

 

root@odroid:/media/boot# dtc -I dtb -O dts -o rk3399-odroidn1-linux.dts rk3399-odroidn1-linux.dtb
Warning (unit_address_vs_reg): Node /usb@fe800000 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /usb@fe900000 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /thermal-zones/soc-thermal/trips/trip-point@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /thermal-zones/soc-thermal/trips/trip-point@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /thermal-zones/soc-thermal/trips/trip-point@2 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /thermal-zones/soc-thermal/trips/trip-point@3 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /thermal-zones/soc-thermal/trips/trip-point@4 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /thermal-zones/soc-thermal/trips/trip-point@5 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /thermal-zones/soc-thermal/trips/trip-point@6 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /thermal-zones/soc-thermal/trips/trip-point@7 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /thermal-zones/soc-thermal/trips/trip-point@8 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /thermal-zones/soc-thermal/trips/trip-point@9 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /phy@e220 has a unitroot@odroid:/media/boot# dtc -I dtb -O dts -o rk3399-odroidn1-linux.dts rk3399-odroidn1-linux.dtb
Warning (unit_address_vs_reg): Node /usb@fe800000 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /usb@fe900000 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /thermal-zones/soc-thermal/trips/trip-point@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /thermal-zones/soc-thermal/trips/trip-point@1 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /thermal-zones/soc-thermal/trips/trip-point@2 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /thermal-zones/soc-thermal/trips/trip-point@3 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /thermal-zones/soc-thermal/trips/trip-point@4 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /thermal-zones/soc-thermal/trips/trip-point@5 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /thermal-zones/soc-thermal/trips/trip-point@6 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /thermal-zones/soc-thermal/trips/trip-point@7 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /thermal-zones/soc-thermal/trips/trip-point@8 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /thermal-zones/soc-thermal/trips/trip-point@9 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /phy@e220 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /efuse@ff690000/id has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /efuse@ff690000/cpul-leakage has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /efuse@ff690000/cpub-leakage has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /efuse@ff690000/gpu-leakage has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /efuse@ff690000/center-leakage has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /efuse@ff690000/logic-leakage has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /efuse@ff690000/wafer-info has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /gpio-keys/button@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /gpiomem has a reg or ranges property, but no unit name name, but no reg property
Warning (unit_address_vs_reg): Node /efuse@ff690000/id has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /efuse@ff690000/cpul-leakage has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /efuse@ff690000/cpub-leakage has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /efuse@ff690000/gpu-leakage has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /efuse@ff690000/center-leakage has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /efuse@ff690000/logic-leakage has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /efuse@ff690000/wafer-info has a reg or ranges property, but no unit name
Warning (unit_address_vs_reg): Node /gpio-keys/button@0 has a unit name, but no reg property
Warning (unit_address_vs_reg): Node /gpiomem has a reg or ranges property, but no unit name

 

board still booting

anybody else got any ideas..thx ..phase

what do i use to edit a .dts file..??...sorry for the noob stuff..i am gathering c++ or something like that

 

can anybody suggest this to me...

The dts blob I posted has to go into your kernel source tree, it wont work like that in a decompiled dtb from /boot since the references are wrong. DTS are just text files...

 

You have to put the blob into 

https://github.com/hardkernel/linux/blob/odroidn1-4.4.y/arch/arm64/boot/dts/rockchip/rk3399-odroidn1-linux.dts

 

and then run make dtbs again to produce the output dtb and put that back in /boot.

 

If you are cross-compiling, you need to ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu- make dtbs

 

@xalius can you give me the commands to do this sorry for the noob q`s