Board Level Configuration

For the VisionFive 2 SBC, the board.dts file is in the following path:

linux/arch/riscv/boot/dts/starfive/jh7110-visionfive-v2.dts

Take UART0 module as an example, its board.dts file is in the following path:

linux/arch/riscv/boot/dts/starfive/jh7110-visionfive-v2.dts

In the file, you can find the following configuration information for UART pin control configuration:

&gpio {
        uart0_pins: uart0-pins {
                uart0-pins-tx {
                        sf,pins = <PAD_GPIO5>;
                        sf,pin-ioconfig = <IO(GPIO_IE(1) | GPIO_DS(3))>;
                        sf,pin-gpio-dout = <GPO_UART0_SOUT>;
                        sf,pin-gpio-doen = <OEN_LOW>;
                };

                uart0-pins-rx {
                        sf,pins = <PAD_GPIO6>;
                        sf,pinmux = <PAD_GPIO6_FUNC_SEL 0>;
                        sf,pin-ioconfig = <IO(GPIO_IE(1) | GPIO_PU(1))>;
                        sf,pin-gpio-doen = <OEN_HIGH>;
                        sf,pin-gpio-din =  <GPI_UART0_SIN>;
                };
        };
};

And you can also find the following configuration information for pin control.

&uart0 {
        pinctrl-names = "default";
        pinctrl-0 = <&uart0_pins>;
        status = "okay";
};