ramips: add support for Linksys E5400 and clones

Linksys E5400 is a 2.4/5GHz dual band AC router, based on MediaTek
MT7628AN. This device is also sold as Linksys E2500v4, E5300 and E5350
with the same hardware, but software speed limitations in vendor
firmwares.

Specification:
 * SoC: MT7628AN (580 MHz)
 * RAM: DDR2 64 MiB
 * Flash: 16 MiB NOR (W25Q128BV)
 * Wi-Fi:
   * 2.4GHz: SoC Built-in
   * 5GHz: MT7612EN
 * Ethernet: 5x 100Mbps
   * Switch: SoC built-in
 * UART:
   * 115200, 8N1, 3.3V (real u-boot speed: 119050)
   * Pinout JB4: 1:[3V3] (TXD) (RXD) [NC] (GND)

Flash Layout:
  0x0000000-0x0030000 : "Bootloader"
  0x0030000-0x0040000 : "Config"
  0x0040000-0x0050000 : "Factory"
  0x0050000-0x0ff0000 : "Kernel"
  0x0ff0000-0x1000000 : "CBTinfo"

MAC address:
  LAN: factory 0x28
  WAN: LAN + 1
  2.4G: LAN + 2
  5G: LAN + 3

Installation:
1. Connect to UART, use LF as EOL (not CRLF)
2. Set IP address
  - Press 4 during boot
  - setenv serverip <TFTPSERVER_IP>
  - setenv ipaddr <DEVICE_IP>
  - setenv bootfile openwrt-ramips-mt76x8-linksys_e5400-initramfs-kernel.bin
  - saveenv
  - reset
3. Load Openwrt Kernel image from TFTP:
  - Press 1 during boot
  - IP and filename should be already set
4. Boot into OpenWrt and perform sysupgrade with sysupgrade image.

Signed-off-by: Julien Dusser <julien.dusser@free.fr>

diff --git a/target/linux/ramips/dts/mt7628an_linksys_e5400.dts b/target/linux/ramips/dts/mt7628an_linksys_e5400.dts
new file mode 100644 (file)
index 0000000..3a6403f
--- /dev/null
+++ b/target/linux/ramips/dts/mt7628an_linksys_e5400.dts
@@ -0,0 +1,163 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "mt7628an.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+       compatible = "linksys,e5400", "mediatek,mt7628an-soc";
+       model = "Linksys E5400";
+
+       aliases {
+               led-boot = &led_wps;
+               led-failsafe = &led_wps;
+               led-running = &led_wps;
+               led-upgrade = &led_wps;
+               label-mac-device = &ethernet;
+       };
+
+       chosen {
+               bootargs = "console=ttyS0,115200";
+       };
+
+       memory@0 {
+               device_type = "memory";
+               reg = <0x0 0x4000000>;
+       };
+
+       keys {
+               compatible = "gpio-keys";
+
+               reset {
+                       label = "reset";
+                       gpios = <&gpio 11 GPIO_ACTIVE_LOW>;
+                       linux,code = <KEY_RESTART>;
+               };
+
+               wps {
+                       label = "wps";
+                       gpios = <&gpio 38 GPIO_ACTIVE_LOW>;
+                       linux,code = <KEY_WPS_BUTTON>;
+               };
+       };
+
+       leds {
+               compatible = "gpio-leds";
+
+               led_wps: wps {
+                       label = "green:wps";
+                       gpios = <&gpio 37 GPIO_ACTIVE_LOW>;
+               };
+       };
+};
+
+&spi0 {
+       status = "okay";
+
+       flash@0 {
+               compatible = "jedec,spi-nor";
+               reg = <0>;
+               spi-max-frequency = <40000000>;
+
+               partitions {
+                       compatible = "fixed-partitions";
+                       #address-cells = <1>;
+                       #size-cells = <1>;
+
+                       partition@0 {
+                               label = "u-boot";
+                               reg = <0x0 0x30000>;
+                               read-only;
+                       };
+
+                       partition@30000 {
+                               label = "u-boot-env";
+                               reg = <0x30000 0x10000>;
+                               read-only;
+                       };
+
+                       factory: partition@40000 {
+                               label = "factory";
+                               reg = <0x40000 0x10000>;
+                               read-only;
+
+                               compatible = "nvmem-cells";
+                               #address-cells = <1>;
+                               #size-cells = <1>;
+
+                               macaddr_factory_28: macaddr@28 {
+                                       reg = <0x28 0x6>;
+                               };
+                       };
+
+                       partition@50000 {
+                               compatible = "denx,uimage";
+                               label = "firmware";
+                               reg = <0x50000 0xfa0000>;
+                       };
+
+                       partition@ff0000 {
+                               label = "cbtinfo";
+                               reg = <0xff0000 0x10000>;
+                               read-only;
+                       };
+               };
+       };
+};
+
+&ehci {
+       status = "disabled";
+};
+
+&esw {
+       mediatek,portmap = <0x2f>;
+       mediatek,portdisable = <0x20>;
+};
+
+&ethernet {
+       nvmem-cells = <&macaddr_factory_28>;
+       nvmem-cell-names = "mac-address";
+};
+
+&ohci {
+       status = "disabled";
+};
+
+&pcie {
+       status = "okay";
+};
+
+&pcie0 {
+       wifi5: wifi@0,0 {
+               compatible = "mediatek,mt76";
+               reg = <0x0000 0 0 0 0>;
+               mediatek,mtd-eeprom = <&factory 0x8000>;
+               ieee80211-freq-limit = <5000000 6000000>;
+
+               nvmem-cells = <&macaddr_factory_28>;
+               nvmem-cell-names = "mac-address";
+               mac-address-increment = <3>;
+       };
+};
+
+&state_default {
+       gpio {
+               group = "gpio", "i2c", "i2s", "refclk", "uart1", "wdt", "wled_an";
+               function = "gpio";
+       };
+};
+
+&usbphy {
+       status = "disabled";
+};
+
+&wmac {
+       status = "okay";
+
+       mediatek,mtd-eeprom = <&factory 0x0>;
+       nvmem-cells = <&macaddr_factory_28>;
+       nvmem-cell-names = "mac-address";
+       mac-address-increment = <2>;
+};
+

diff --git a/target/linux/ramips/image/mt76x8.mk b/target/linux/ramips/image/mt76x8.mk
index 1b7e786b52b887a1e71a4004ef1a4f567624f269..a77f1c97e1ebdf69e63adea0899257dfc559823e 100644 (file)
--- a/target/linux/ramips/image/mt76x8.mk
+++ b/target/linux/ramips/image/mt76x8.mk
@@ -342,6 +342,21 @@ define Device/kroks_kndrt31r19
 endef
 TARGET_DEVICES += kroks_kndrt31r19
 
+define Device/linksys_e5400
+  IMAGE_SIZE := 16000k
+  DEVICE_VENDOR := Linksys
+  DEVICE_MODEL := E5400
+  DEVICE_ALT0_VENDOR := Linksys
+  DEVICE_ALT0_MODEL := E2500
+  DEVICE_ALT0_VARIANT := v4
+  DEVICE_ALT1_VENDOR := Linksys
+  DEVICE_ALT1_MODEL := E5300
+  DEVICE_ALT2_VENDOR := Linksys
+  DEVICE_ALT2_MODEL := E5350
+  DEVICE_PACKAGES := kmod-mt76x2
+endef
+TARGET_DEVICES += linksys_e5400
+
 define Device/mediatek_linkit-smart-7688
   IMAGE_SIZE := 32448k
   DEVICE_VENDOR := MediaTek

diff --git a/target/linux/ramips/mt76x8/base-files/etc/board.d/02_network b/target/linux/ramips/mt76x8/base-files/etc/board.d/02_network
index d85cdf3db7fac1e490513790bcf6d23345bba1f1..26415e0fa65ae146166d6a5e7cf8872e8e8cddda 100644 (file)
--- a/target/linux/ramips/mt76x8/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/mt76x8/base-files/etc/board.d/02_network
@@ -125,6 +125,10 @@ ramips_setup_interfaces()
                ucidef_set_interface_lan "eth0"
                ucidef_set_interface "wan" device "/dev/cdc-wdm0" protocol "qmi"
                ;;
+       linksys,e5400)
+               ucidef_add_switch "switch0" \
+                       "0:lan:1" "1:lan:2" "2:lan:3" "3:lan:4" "4:wan" "6@eth0"
+               ;;
        motorola,mwr03)
                ucidef_add_switch "switch0" \
                        "1:lan" "2:lan" "3:lan" "0:wan" "6@eth0"
@@ -248,6 +252,9 @@ ramips_setup_macs()
        totolink,lr1200)
                wan_mac=$(mtd_get_mac_binary factory 0x2e)
                ;;
+       linksys,e5400)
+               wan_mac=$(mtd_get_mac_binary factory 0x22)
+               ;;
        mercury,mac1200r-v2)
                wan_mac=$(macaddr_add "$(mtd_get_mac_binary factory_info 0xd)" 1)
                ;;