Using an enc28j60 on the zero

Zero Series
32

I plan to use the third UART_EE_C, so I modified the overlay for SPI-A and it seems to work. I use GPIOH_4 for interrupt – that is number 32 (thanks to @Antonr for the numbers!). I hope it won’t collide with the UART_EE_C just because GPIOH_4 is also assigned as UART_EE_C_RTS..?

UPDATE: Well, it does… :frowning: So, changing to GPIOC_7, number 60.

Just in case someone were interested:

/dts-v1/;
/plugin/;

/ {
	compatible = "radxa,zero", "amlogic,g12a";

	fragment@0 {
		target = <&spicc0>;
		__overlay__ {
			pinctrl-0 = <&spicc0_x_pins>;
			pinctrl-names = "default";
			#address-cells = <1>;
			#size-cells = <0>;
			cs-gpios = <&gpio 75 1>;
			status = "okay";

			ethernet: enc28j60@0 {
				compatible = "microchip,enc28j60";
				reg = <0>;
				spi-max-frequency = <20000000>;

				pinctrl-names = "default";
				pinctrl-0 = <&enc28j60_int_pins>;

				interrupt-parent = <&gpio_intc>;
				interrupts = <60 2>;
			};
		};
	};

	fragment@1 {
		target = <&periphs_pinctrl>;
		__overlay__ {
			enc28j60_int_pins: enc28j60-int-pins@0 {
				mux {
					groups = "GPIOC_7";
					function = "gpio_periphs";
					bias-pull-up;
					drive-strength-microamp = <4000>;
				};
    		};
		};
	};
};