CAN controller in BananaPi does not work in 21.05.1 image, solution available

Go to solution Solved by mue473,

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  • Solution


for my BananaPi I recently downloaded "Armbian_21.05.1_Bananapi_buster_current_5.10.34.img" and did not get the on-board CAN controller working with this image.


I found out that in sun7i-a20-bananapi.dtb (uses sun7i-a20.dtsi) the group name for the CAN pins PH20 and PH21 has changed from "can0_pins_a" to "can_ph_pins" but in the sun7i-a20-can overlay this change had not been done accordingly, and the DT merging failed.


So changing "sun7i-a20-can.dts" to:


/ {
	compatible = "allwinner,sun7i-a20";

	fragment@0 {
		target = <&can0>;
		__overlay__ {
			pinctrl-names = "default";
			pinctrl-0 = <&can_ph_pins>;
			status = "okay";

solved the problem.


Please consider this for further releases,


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