SPDIF oputput from GPIO header

ROCK 5 Series
2

So I obviously have little idea of what I am doing, but without SPDIF I have a rather expensive paperweight on my desk…

So finding this and tracking down the working github link I have tried updating to suit the 5B resulting in this overlay;

/dts-v1/;
/plugin/;

/ {
        compatible = "radxa,rock-5b", "rockchip,rk3588";
        fragment@0 {
                target-path = "/";

                __overlay__ {
                        acodec: acodec {
                                #sound-dai-cells = <0>;
                                compatible = "rockchip,rk3588-codec";
                                status = "okay";
                                };
                        };
        };

        fragment@1 {
                target = <&spdif_tx>;

                __overlay__ {
                                status = "okay";
                        };
        };

        fragment@2 {
                target = <&i2s_8ch_0>;

                __overlay__ {
                        status = "disabled";
                };
        };

        fragment@3 {
                target = <&i2s_8ch_2>;

                __overlay__ {
                        status = "disabled";
                };
        };

        fragment@4 {
                target-path = "/";

                __overlay__ {
                        acodec-sound {
                                compatible = "rockchip,multicodecs-card";
                                rockchip,card-name = "SPDIF_out";
                                rockchip,mclk-fs = <256>;
                                rockchip,cpu = <&spdif_tx>;
                                rockchip,codec = <&acodec>;
                                };
                    };
          };
};

Which not to surprisingly just stops the board from booting… so I really need some help please!!

Stripping it back to

/dts-v1/;
/plugin/;

/ {
        compatible = "radxa,rock-5b", "rockchip,rk3588";

        fragment@0 {
                target = <&spdif_tx>;

                __overlay__ {
                                status = "okay";
                        };
        };

};

Also results in a no boot!! :frowning_face: