openwrt/target/linux/ramips/dts/ArcherC20v4.dts
Maxim Anisimov 5bdd238b63 ramips: add support for TP-Link Archer C20 v4
TP-Link Archer C20 v4 is a router with 5-port FE switch and
non-detachable antennas. It's based on MediaTek MT7628N+MT7610EN.

Specification:
- MediaTek MT7628N/N (580 Mhz)
- 64 MB of RAM
- 8 MB of FLASH
- 2T2R 2.4 GHz and 1T1R 5 GHz
- 5x 10/100 Mbps Ethernet
- 3x external, non-detachable antennas
- UART (J1) header on PCB (115200 8n1)
- 7x LED (GPIO-controlled*), 2x button, power input switch

* WAN LED in this devices is a dual-color, dual-leads type which isn't
  (fully) supported by gpio-leds driver. This type of LED requires both
  GPIOs state change at the same time to select color or turn it off.
  For now, we support/use only the green part of the LED.
* MT7610EN ac chip isn't not supported by LEDE. Therefore 5Ghz won't
  work.

Flash instruction:

The only way to flash LEDE image in ArcherC20v4 is to use
tftp recovery mode in U-Boot:

1. Configure PC with static IP 192.168.0.66/24 and tftp server.
2. Rename "openwrt-ramips-mt7628-ArcherC20v4-squashfs-tftp-recovery.bin"
   to "tp_recovery.bin" and place it in tftp server directory.
3. Connect PC with one of LAN ports, press the reset button, power up
   the router and keep button pressed for around 6-7 seconds, until
   device starts downloading the file.
4. Router will download file from server, write it to flash and reboot.

Signed-off-by: Maxim Anisimov <maxim.anisimov.ua@gmail.com>
2018-01-15 21:45:43 +01:00

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/dts-v1/;
#include "mt7628an.dtsi"
#include <dt-bindings/input/input.h>
#include <dt-bindings/gpio/gpio.h>
/ {
compatible = "tplink,c20-v4", "mediatek,mt7628an-soc";
model = "TP-Link Archer C20 v4";
chosen {
bootargs = "console=ttyS0,115200";
};
gpio-leds {
compatible = "gpio-leds";
lan {
label = "c20-v4:green:lan";
gpios = <&gpio1 10 GPIO_ACTIVE_LOW>;
};
power {
label = "c20-v4:green:power";
gpios = <&gpio0 2 GPIO_ACTIVE_LOW>;
};
wan {
label = "c20-v4:green:wan";
gpios = <&gpio1 11 GPIO_ACTIVE_LOW>;
};
wan_orange {
label = "c20-v4:orange:wan";
gpios = <&gpio0 11 GPIO_ACTIVE_LOW>;
};
wlan5g {
label = "c20-v4:green:wlan5g";
gpios = <&gpio1 8 GPIO_ACTIVE_LOW>;
};
wlan2g {
label = "c20-v4:green:wlan2g";
gpios = <&gpio1 7 GPIO_ACTIVE_LOW>;
};
wps {
label = "c20-v4:green:wps";
gpios = <&gpio1 9 GPIO_ACTIVE_LOW>;
};
};
gpio-keys-polled {
compatible = "gpio-keys-polled";
#address-cells = <1>;
#size-cells = <0>;
poll-interval = <20>;
reset {
label = "reset";
gpios = <&gpio1 6 GPIO_ACTIVE_LOW>;
linux,code = <KEY_RESTART>;
};
rfkill {
label = "rfkill";
gpios = <&gpio1 5 GPIO_ACTIVE_LOW>;
linux,code = <KEY_RFKILL>;
};
};
memory@0 {
device_type = "memory";
reg = <0x0 0x4000000>;
};
};
&spi0 {
status = "okay";
m25p80@0 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "jedec,spi-nor";
reg = <0>;
spi-max-frequency = <10000000>;
m25p,chunked-io = <32>;
partition@0 {
label = "u-boot";
reg = <0x0 0x20000>;
read-only;
};
partition@20000 {
label = "firmware";
reg = <0x20000 0x7a0000>;
};
partition@7c0000 {
label = "config";
reg = <0x7c0000 0x10000>;
read-only;
};
rom: partition@7d0000 {
label = "rom";
reg = <0x7d0000 0x10000>;
read-only;
};
partition@7e0000 {
label = "romfile";
reg = <0x7e0000 0x10000>;
read-only;
};
radio: partition@7f0000 {
label = "radio";
reg = <0x7f0000 0x10000>;
read-only;
};
};
};
&ehci {
status = "disabled";
};
&ohci {
status = "disabled";
};
&wmac {
status = "okay";
mediatek,mtd-eeprom = <&radio 0x0>;
mtd-mac-address = <&rom 0xf100>;
mtd-mac-address-increment = <(-2)>;
};
&ethernet {
mtd-mac-address = <&rom 0xf100>;
mediatek,portmap = "wllll";
};
&pinctrl {
state_default: pinctrl0 {
gpio {
ralink,group = "i2s", "refclk", "p0led_an", "p1led_an", "p2led_an", "p3led_an", "p4led_an", "wdt";
ralink,function = "gpio";
};
};
};
&pcie {
status = "okay";
pcie-bridge {
mt76@0,0 {
reg = <0x0000 0 0 0 0>;
device_type = "pci";
mediatek,mtd-eeprom = <&radio 0x8000>;
ieee80211-freq-limit = <5000000 6000000>;
mtd-mac-address = <&rom 0xf100>;
mtd-mac-address-increment = <(-1)>;
};
};
};