ShiboSoftwareDev/f1c100s-linux-stepper-controller

firmware/carrier.dtsi

/* Include after suniv-f1c100s.dtsi in your board DTS. This is a hardware
 * integration fragment, not a complete bootable board description. */
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>

/ {
    aliases { serial0 = &uart0; i2c0 = &i2c0; spi0 = &spi0; spi1 = &spi1; };
    chosen { stdout-path = "serial0:115200n8"; };
    /* Motor control remains userspace GPIO so the driver stays disabled until
     * Linux intentionally arms it. PE2 STEP, PE3 DIR, PE4 ENABLE (active high),
     * PE5 nFAULT and PE6 TMP102 ALERT. A board-level 100 kOhm pulldown keeps
     * PE4 safe throughout reset and early boot. */
};
&pio {
    carrier_i2c0: i2c0-pe-pins { pins = "PE11", "PE12"; function = "i2c0"; };
    carrier_spi1: spi1-pe-pins { pins = "PE7", "PE8", "PE9", "PE10"; function = "spi1"; };
};
&uart0 { pinctrl-names = "default"; pinctrl-0 = <&uart0_pe_pins>; status = "okay"; };
&i2c0 {
    pinctrl-names = "default"; pinctrl-0 = <&carrier_i2c0>;
    clock-frequency = <100000>; status = "okay";
    temperature-sensor@48 {
        compatible = "ti,tmp102";
        reg = <0x48>;
        interrupt-parent = <&pio>;
        interrupts = <4 6 IRQ_TYPE_LEVEL_LOW>; /* PE6 */
    };
};
&spi0 {
    pinctrl-names = "default"; pinctrl-0 = <&spi0_pc_pins>; status = "okay";
    flash@0 {
        compatible = "winbond,w25q128", "jedec,spi-nor";
        reg = <0>; spi-max-frequency = <24000000>;
        /* Partition layout must match your SPL/U-Boot/Linux image. */
    };
};
&spi1 {
    pinctrl-names = "default"; pinctrl-0 = <&carrier_spi1>; status = "okay";
    /* Add your real SPI peripheral at CS0; start at <= 1 MHz over the cable.
     * Do not use a fictitious compatible string just to bind spidev. */
};
&usb_otg { dr_mode = "peripheral"; status = "okay"; };
&usbphy { status = "okay"; };