Getting a "rockchip-pinctrl pinctrl: invalid function gpio in map table" message on bootup

[Gerriko]

I am using a rk3566 chip. I was using the "rk3568-spi3-m1-cs0-enc28j60.dts" overlay file as my reference but I am using GPIO4_A3 as my interrupt pin.

I have used the following for pinctrl:

    fragment@2 {
        target = <&pinctrl>;

        __overlay__ {
            enc28j60 {
                eth0_pins: eth0-pins {
                    rockchip,pins = <4 3 0 &pcfg_pull_none>;
                };
            };

        };
    };

Can any explain what is wrong with rockchip,pins = <4 3 0 &pcfg_pull_none>;

[Gerriko]

I tried an override command as follows:

    __overrides__ {
        int_pin = <&eth0>, "interrupts:0", <&eth0_pins>, "rockchip,pins:0";
        speed = <&eth0>, "spi-max-frequency:0";
    };

And then I got this message in the debug output on bootup:

So why is fe6b0000.serial holding onto gpio4-3?

EDIT

Here is the device tree list for serial - so this is enabled by default (wasn't aware of that) - which serial is this? what's it used for or can I disable?

/proc/device-tree/serial@fdd50000/status: disabled
/proc/device-tree/serial@fe650000/status: okay
/proc/device-tree/serial@fe660000/status: okay
/proc/device-tree/serial@fe670000/status: disabled
/proc/device-tree/serial@fe680000/status: disabled
/proc/device-tree/serial@fe690000/status: disabled
/proc/device-tree/serial@fe6a0000/status: disabled
/proc/device-tree/serial@fe6b0000/status: okay
/proc/device-tree/serial@fe6c0000/status: disabled

[RadxaYuntian]

Coding problem should go to our forum. The issues here should be if one of our supplied overlays doesn't work.

Regarding your problem though, here is how you tackle it:

1. Find the offending serial's phandle: UART7

2. Realize none of our products enable UART7 by default, so this is either a custom system, a custom hardware, or both.

Well there is nothing I can help because I don't know why you use UART7 on your product /shrug You should check your own design then.