-1
/ {
#address-cells = <1>;
#size-cells = <1>;
compatible = "ralink,mtk7620a-soc";
cpus {
[email protected] {
compatible = "mips,mips24KEc";
};
};
chosen {
bootargs = "console=ttyS0,57600";
};
cpuintc: [email protected] {
#address-cells = <0>;
#interrupt-cells = <1>;
interrupt-controller;
compatible = "mti,cpu-interrupt-controller";
};
[email protected] {
compatible = "palmbus";
reg = <0x10000000 0x200000>;
ranges = <0x0 0x10000000 0x1FFFFF>;
#address-cells = <1>;
#size-cells = <1>;
[email protected] {
compatible = "ralink,mt7620a-sysc", "ralink,rt3050-sysc";
reg = <0x0 0x100>;
};
[email protected] {
compatible = "ralink,mt7620a-timer", "ralink,rt2880-timer";
reg = <0x100 0x20>;
interrupt-parent = <&intc>;
interrupts = <1>;
};
[email protected] {
compatible = "ralink,mt7620a-wdt", "ralink,rt2880-wdt";
reg = <0x120 0x10>;
resets = <&rstctrl 8>;//what is the 'reset' lable?
reset-names = "wdt";
interrupt-parent = <&intc>;
interrupts = <1>;
};
intc: [email protected] {
compatible = "ralink,mt7620a-intc", "ralink,rt2880-intc";
reg = <0x200 0x100>;
resets = <&rstctrl 19>;
reset-names = "intc";
interrupt-controller;
#interrupt-cells = <1>;
interrupt-parent = <&cpuintc>;
interrupts = <2>;
};
[email protected] {
compatible = "ralink,mt7620a-memc", "ralink,rt3050-memc";
reg = <0x300 0x100>;
resets = <&rstctrl 20>;
reset-names = "mc";
interrupt-parent = <&intc>;
interrupts = <3>;
};
[email protected] {
compatible = "ralink,mt7620a-uart", "ralink,rt2880-uart", "ns16550a";
reg = <0x500 0x100>;
resets = <&rstctrl 12>;
reset-names = "uart";
interrupt-parent = <&intc>;
interrupts = <5>;
reg-shift = <2>;
status = "disabled";
};
gpio0: [email protected] {
compatible = "ralink,mt7620a-gpio", "ralink,rt2880-gpio";
reg = <0x600 0x34>;
resets = <&rstctrl 13>;
reset-names = "pio";
interrupt-parent = <&intc>;
interrupts = <6>;
gpio-controller;
#gpio-cells = <2>;
ralink,gpio-base = <0>;
ralink,num-gpios = <24>;
ralink,register-map = [ 00 04 08 0c
20 24 28 2c
30 34 ];
};
gpio1: [email protected] {
compatible = "ralink,mt7620a-gpio", "ralink,rt2880-gpio";
reg = <0x638 0x24>;
interrupt-parent = <&intc>;
interrupts = <6>;
gpio-controller;
#gpio-cells = <2>;
ralink,gpio-base = <24>;
ralink,num-gpios = <16>;
ralink,register-map = [ 00 04 08 0c
10 14 18 1c
20 24 ];
status = "disabled";
};
gpio2: [email protected] {
compatible = "ralink,mt7620a-gpio", "ralink,rt2880-gpio";
reg = <0x660 0x24>;
interrupt-parent = <&intc>;
interrupts = <6>;
gpio-controller;
#gpio-cells = <2>;
ralink,gpio-base = <40>;
ralink,num-gpios = <32>;
ralink,register-map = [ 00 04 08 0c
10 14 18 1c
20 24 ];
status = "disabled";
};
gpio3: [email protected] {
compatible = "ralink,mt7620a-gpio", "ralink,rt2880-gpio";
reg = <0x688 0x24>;
interrupt-parent = <&intc>;
interrupts = <6>;
gpio-controller;
#gpio-cells = <2>;
ralink,gpio-base = <72>;
ralink,num-gpios = <1>;
ralink,register-map = [ 00 04 08 0c
10 14 18 1c
20 24 ];
status = "disabled";
};
[email protected] {
compatible = "link,mt7620a-i2c", "ralink,rt2880-i2c";
reg = <0x900 0x100>;
resets = <&rstctrl 16>;
reset-names = "i2c";
#address-cells = <1>;
#size-cells = <0>;
status = "disabled";
pinctrl-names = "default";
pinctrl-0 = <&i2c_pins>;
};
[email protected] {
compatible = "ralink,mt7620a-i2s";
reg = <0xa00 0x100>;
resets = <&rstctrl 17>;
reset-names = "i2s";
interrupt-parent = <&intc>;
interrupts = <10>;
dmas = <&gdma 4>,
<&gdma 5>;
dma-names = "tx", "rx";
status = "disabled";
};
[email protected] {
compatible = "ralink,mt7620a-spi", "ralink,rt2880-spi";
reg = <0xb00 0x100>;
resets = <&rstctrl 18>;
reset-names = "spi";
#address-cells = <1>;
#size-cells = <1>;
status = "disabled";
pinctrl-names = "default";
pinctrl-0 = <&spi_pins>;
};
[email protected] {
compatible = "ralink,mt7620a-uart", "ralink,rt2880-uart", "ns16550a";
reg = <0xc00 0x100>;
resets = <&rstctrl 19>;
reset-names = "uartl";
interrupt-parent = <&intc>;
interrupts = <12>;
reg-shift = <2>;
pinctrl-names = "default";
pinctrl-0 = <&uartlite_pins>;
};
[email protected] {
compatible = "ralink,mt7620a-systick", "ralink,cevt-systick";
reg = <0xd00 0x10>;
resets = <&rstctrl 28>;
reset-names = "intc";
interrupt-parent = <&cpuintc>;
interrupts = <7>;
};
[email protected] {
compatible = "ralink,mt7620a-pcm";
reg = <0x2000 0x800>;
resets = <&rstctrl 11>;
reset-names = "pcm";
interrupt-parent = <&intc>;
interrupts = <4>;
status = "disabled";
};
gdma: [email protected] {
compatible = "ralink,mt7620a-gdma", "ralink,rt2880-gdma";
reg = <0x2800 0x800>;
resets = <&rstctrl 14>;
reset-names = "dma";
interrupt-parent = <&intc>;
interrupts = <7>;
#dma-cells = <1>;
#dma-channels = <16>;
#dma-requests = <16>;
status = "disabled";
};
};
pinctrl {
compatible = "ralink,rt2880-pinmux";
pinctrl-names = "default";
pinctrl-0 = <&state_default>;
state_default: pinctrl0 {
};
pcm_i2s_pins: pcm_i2s {
pcm_i2s {
ralink,group = "uartf"; //what did the 'ralink, group' mean?
ralink,function = "pcm i2s";//what did the 'ralink, function' mean?
};
};
uartf_gpio_pins: uartf_gpio {
uartf_gpio {
ralink,group = "uartf";
ralink,function = "gpio uartf";
};
};
spi_pins: spi {
spi {
ralink,group = "spi";
ralink,function = "spi";
};
};
i2c_pins: i2c {
i2c {
lantiq,group = "i2c";
lantiq,function = "i2c";
};
};
uartlite_pins: uartlite {
uart {
ralink,group = "uartlite";
ralink,function = "uartlite";
};
};
mdio_pins: mdio {
mdio {
ralink,group = "mdio";
ralink,function = "mdio";
};
};
ephy_pins: ephy {
ephy {
ralink,group = "ephy";
ralink,function = "ephy";
};
};
wled_pins: wled {
wled {
ralink,group = "wled";
ralink,function = "wled";
};
};
rgmii1_pins: rgmii1 {
rgmii1 {
ralink,group = "rgmii1";
ralink,function = "rgmii1";
};
};
rgmii2_pins: rgmii2 {
rgmii2 {
ralink,group = "rgmii2";
ralink,function = "rgmii2";
};
};
//add by liang
uartf: uartf {
uartf {
ralink,group = "uartf";
ralink,function = "uartf";
};
};
};
rstctrl: rstctrl {
compatible = "ralink,mt7620a-reset", "ralink,rt2880-reset";
#reset-cells = <1>;
};
usbphy {
compatible = "ralink,mt7620a-usbphy";
resets = <&rstctrl 22 &rstctrl 25>;
reset-names = "host", "device";
};
[email protected] {
compatible = "ralink,mt7620a-eth";
reg = <0x10100000 10000>;
#address-cells = <1>;
#size-cells = <0>;
interrupt-parent = <&cpuintc>;
interrupts = <5>;
resets = <&rstctrl 21 &rstctrl 23>;
reset-names = "fe", "esw";
[email protected] {
compatible = "ralink,mt7620a-gsw-port", "ralink,eth-port";
reg = <4>;
status = "disabled";
};
[email protected] {
compatible = "ralink,mt7620a-gsw-port", "ralink,eth-port";
reg = <5>;
status = "disabled";
};
mdio-bus {
#address-cells = <1>;
#size-cells = <0>;
status = "disabled";
};
};
[email protected] {
compatible = "ralink,mt7620a-gsw";
reg = <0x10110000 8000>;
interrupt-parent = <&intc>;
interrupts = <17>;
};
[email protected] {
compatible = "ralink,mt7620a-sdhci";
reg = <0x10130000 4000>;
interrupt-parent = <&intc>;
interrupts = <14>;
status = "disabled";
};
[email protected] {
compatible = "ralink,rt3xxx-ehci";
reg = <0x101c0000 0x1000>;
interrupt-parent = <&intc>;
interrupts = <18>;
status = "disabled";
};
[email protected] {
compatible = "ralink,rt3xxx-ohci";
reg = <0x101c1000 0x1000>;
interrupt-parent = <&intc>;
interrupts = <18>;
status = "disabled";
};
[email protected] {
compatible = "ralink,mt7620a-pci";
reg = <0x10140000 0x100
0x10142000 0x100>;
resets = <&rstctrl 26>;
reset-names = "pcie0";
interrupt-parent = <&cpuintc>;
interrupts = <4>;
status = "disabled";
};
[email protected] {
compatible = "ralink,rt7620-wmac", "ralink,rt2880-wmac";
reg = <0x10180000 40000>;
interrupt-parent = <&cpuintc>;
interrupts = <6>;
ralink,eeprom = "soc_wmac.eeprom";
};
我正在使用安裝openwrt操作系統的mt7620a。我對設備樹文件感到困惑。 標籤ralink,functionralink,group和reset name是什麼意思？ 而我想啓用第二個串口？我怎樣才能修改dts文件？