openwrt/target/linux/ath79/dts/ar9331_arduino_yun.dts
Sungbo Eo 358aec7775 ath79: add support for Arduino Yun
Arduino Yun is a microcontroller development board, based on Atmel
ATmega32u4 and Atheros AR9331.

Specifications:
- MCU: ATmega32U4
- SoC: AR9331
- RAM: DDR2 64MB
- Flash: SPI NOR 16MB
- WiFi:
  - 2.4GHz: SoC internal
- Ethernet: 1x 10/100Mbps
- USB: 1x 2.0
- MicroSD: 1x SDHC

Notes:
- Stock firmware is based on OpenWrt AA.
- The SoC UART can be accessed only through the MCU.
  YunSerialTerminal is recommended for access to serial console.
- Stock firmware uses non-standard 250000 baudrate by default.
- The MCU can be reprogrammed from the SoC with avrdude linuxgpio.

Installation:
1.  Update U-Boot environment variables to adapt to new partition scheme.
    > setenv bootcmd "run addboard; run addtty; run addparts; run addrootfs; bootm 0x9f050000 || bootm 0x9fea0000"
    > setenv mtdparts "spi0.0:256k(u-boot)ro,64k(u-boot-env),15936k(firmware),64k(nvram),64k(art)ro"
    > saveenv
2.  Boot into stock firmware normally and perform sysupgrade with
    sysupgrade image.
    # sysupgrade -n -F /tmp/sysupgrade.bin

Signed-off-by: Sungbo Eo <mans0n@gorani.run>
2020-07-08 23:22:30 +02:00

224 lines
3.7 KiB
Plaintext

// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
/dts-v1/;
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
#include "ar9331.dtsi"
/ {
model = "Arduino Yun";
compatible = "arduino,yun", "qca,ar9331";
aliases {
serial0 = &uart;
};
chosen {
bootargs = "console=ttyATH0,250000";
};
ahb {
apb {
pinmux_extended: pinmux@18040030 {
compatible = "pinctrl-single";
reg = <0x18040030 0x4>;
pinctrl-single,bit-per-mux;
pinctrl-single,register-width = <32>;
pinctrl-single,function-mask = <0x1>;
#pinctrl-cells = <2>;
enable_gpio11: pinmux_enable_gpio11 {
pinctrl-single,bits = <0x0 0x200 0x200>;
};
};
pinmux_bootstrap: pinmux@180600ac {
compatible = "pinctrl-single";
reg = <0x180600ac 0x4>;
pinctrl-single,bit-per-mux;
pinctrl-single,register-width = <32>;
pinctrl-single,function-mask = <0x1>;
#pinctrl-cells = <2>;
enable_gpio26_gpio27: pinmux_enable_gpio26_gpio27 {
pinctrl-single,bits = <0x0 0x40000 0x40000>;
};
};
};
};
leds {
compatible = "gpio-leds";
wlan {
label = "yun:blue:wlan";
gpios = <&gpio 0 GPIO_ACTIVE_HIGH>;
linux,default-trigger = "phy0tpt";
};
usb {
label = "yun:white:usb";
gpios = <&gpio 1 GPIO_ACTIVE_HIGH>;
trigger-sources = <&hub_port1>;
linux,default-trigger = "usbport";
};
};
keys {
compatible = "gpio-keys";
config {
label = "config";
linux,code = <BTN_0>;
gpios = <&gpio 20 GPIO_ACTIVE_LOW>;
};
};
gpio-export {
compatible = "gpio-export";
gpio_spi_enable {
gpio-export,name = "yun:oe:spi";
gpio-export,output = <0>;
gpios = <&gpio 21 GPIO_ACTIVE_HIGH>;
};
gpio_handshake_enable {
gpio-export,name = "yun:oe:hs";
gpio-export,output = <0>;
gpios = <&gpio 22 GPIO_ACTIVE_HIGH>;
};
gpio_uart_enable {
gpio-export,name = "yun:oe:uart";
gpio-export,output = <0>;
gpios = <&gpio 23 GPIO_ACTIVE_LOW>;
};
};
reg_usb_vbus: reg_usb_vbus {
compatible = "regulator-fixed";
regulator-name = "usb_vbus";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
enable-active-high;
};
};
&uart {
status = "okay";
};
&gpio {
status = "okay";
};
&pinmux {
pinctrl-names = "default";
pinctrl-0 = <&jtag_disable_pins &switch_led_disable_pins>;
};
&switch_led_disable_pins {
pinctrl-single,bits = <0x0 0x80 0xf8>;
};
&pinmux_extended {
pinctrl-names = "default";
pinctrl-0 = <&enable_gpio11>;
};
&pinmux_bootstrap {
pinctrl-names = "default";
pinctrl-0 = <&enable_gpio26_gpio27>;
};
&usb {
status = "okay";
#address-cells = <1>;
#size-cells = <0>;
dr_mode = "host";
vbus-supply = <&reg_usb_vbus>;
port@1 {
#address-cells = <1>;
#size-cells = <0>;
reg = <1>;
#trigger-source-cells = <0>;
hub_port1: port@1 {
reg = <1>;
#trigger-source-cells = <0>;
};
};
};
&usb_phy {
status = "okay";
};
&spi {
status = "okay";
num-cs = <1>;
flash@0 {
compatible = "jedec,spi-nor";
reg = <0>;
spi-max-frequency = <50000000>;
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
partition@0 {
label = "u-boot";
reg = <0x0 0x40000>;
read-only;
};
partition@40000 {
label = "u-boot-env";
reg = <0x40000 0x10000>;
};
partition@50000 {
compatible = "denx,uimage";
label = "firmware";
reg = <0x50000 0xf90000>;
};
partition@fe0000 {
label = "nvram";
reg = <0xfe0000 0x10000>;
};
art: partition@ff0000 {
label = "art";
reg = <0xff0000 0x10000>;
read-only;
};
};
};
};
&eth0 {
status = "okay";
};
&eth1 {
status = "okay";
compatible = "syscon", "simple-mfd";
};
&wmac {
status = "okay";
mtd-cal-data = <&art 0x1000>;
};