The gl-e750 is a portable travel router that gives you safe access to
the internet while traveling.

Specifications:
- SoC: Qualcomm Atheros AR9531 (650MHz)
- RAM: 128 MB DDR2
- Flash: 16 MB SPI NOR (W25Q128FVSG) + 128 MB SPI NAND (GD5F1GQ4UFYIG)
- Ethernet: 10/100: 1xLAN
- Wireless: QCA9531 2.4GHz (bgn) + QCA9887 5GHz (ac)
- USB: 1x USB 2.0 port
- Switch: 1x switch
- Button: 1x reset button
- OLED Screen: 128*64 px

MAC addresses based on vendor firmware:
LAN *:a0 art 0x0
2.4GHz *:a1 art 0x1002
5GHz *:a2 art calculated from art 0x0 + 2

Flash firmware:
Since openwrt's kernel already exceeds 2MB, upgrading from the official
version of GL-inet (v3.100) using the sysupgrade command will break the
kernel image. Users who are using version 3.100 can only upgrade via
uboot. The official guidance for GL-inet is as follows:
https://docs.gl-inet.com/en/3/troubleshooting/debrick/

In the future, GL-inet will modify the firmware to support the sysupgrade
command, so users will be able to upgrade directly with the sysupgrade
command in future releases.

OLED screen control:
OLED controller is connected to QCA9531 through serial port, and can send
instructions to OLED controller directly through serial port.
Refer to the links below for a list of supported instructions:
https://github.com/gl-inet/GL-E750-MCU-instruction

Signed-off-by: Luochongjun <luochong...@gl-inet.com>
---
 target/linux/ath79/dts/qca9531_glinet_gl-e750.dts  | 140 +++++++++++++++++++++
 target/linux/ath79/image/nand.mk                   |  18 +++
 .../ath79/nand/base-files/etc/board.d/02_network   |   3 +
 .../etc/hotplug.d/ieee80211/10-fix-wifi-mac        |   8 ++
 4 files changed, 169 insertions(+)
 create mode 100644 target/linux/ath79/dts/qca9531_glinet_gl-e750.dts

diff --git a/target/linux/ath79/dts/qca9531_glinet_gl-e750.dts 
b/target/linux/ath79/dts/qca9531_glinet_gl-e750.dts
new file mode 100644
index 0000000..aba2087
--- /dev/null
+++ b/target/linux/ath79/dts/qca9531_glinet_gl-e750.dts
@@ -0,0 +1,140 @@
+// 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 "qca953x.dtsi"
+
+/ {
+       compatible = "glinet,gl-e750", "qca,qca9531";
+       model = "GL.iNet GL-E750";
+
+       aliases {
+               label-mac-device = &eth0;
+       };
+
+       keys {
+               compatible = "gpio-keys";
+
+               pinctrl-names = "default";
+               pinctrl-0 = <&jtag_disable_pins>;
+
+               reset {
+                       label = "reset";
+                       linux,code = <KEY_RESTART>;
+                       gpios = <&gpio 3 GPIO_ACTIVE_LOW>;
+               };
+
+               switch {
+                       label = "switch";
+                       linux,code = <BTN_0>;
+                       gpios = <&gpio 1 GPIO_ACTIVE_LOW>;
+               };
+       };
+
+       gpio-export {
+               compatible = "gpio-export";
+               #size-cells = <0>;
+
+               gpio_lte_power {
+                       gpio-export,name = "lte_power";
+                       gpio-export,output = <1>;
+                       gpios = <&gpio 0 GPIO_ACTIVE_HIGH>;
+               };
+        };
+};
+
+&pcie0 {
+       status = "okay";
+};
+
+&uart {
+       status = "okay";
+};
+
+&usb0 {
+       status = "okay";
+};
+
+&usb_phy {
+       status = "okay";
+};
+
+&spi {
+       status = "okay";
+       num-cs = <2>;
+
+       flash@0 {
+               compatible = "jedec,spi-nor";
+               reg = <0>;
+               spi-max-frequency = <25000000>;
+
+               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>;
+                       };
+
+                       art: partition@50000 {
+                               label = "art";
+                               reg = <0x50000 0x10000>;
+                               read-only;
+                       };
+
+                       partition@60000 {
+                               label = "kernel";
+                               reg = <0x60000 0x400000>;
+                       };
+
+                       partition@460000 {
+                               label = "reserved";
+                               reg = <0x460000 0xba0000>;
+                       };
+               };
+       };
+
+       flash@1 {
+               compatible = "spi-nand";
+               reg = <1>;
+               spi-max-frequency = <25000000>;
+
+               partitions {
+                       compatible = "fixed-partitions";
+                       #address-cells = <1>;
+                       #size-cells = <1>;
+
+                       partition@0 {
+                               label = "ubi";
+                               reg = <0x0 0x8000000>;
+                       };
+               };
+       };
+};
+
+&eth0 {
+       status = "okay";
+
+       mtd-mac-address = <&art 0x0>;
+       phy-handle = <&swphy4>;
+};
+
+&eth1 {
+       compatible = "syscon", "simple-mfd";
+};
+
+&wmac {
+       status = "okay";
+
+       mtd-cal-data = <&art 0x1000>;
+};
diff --git a/target/linux/ath79/image/nand.mk b/target/linux/ath79/image/nand.mk
index f7fc71d..a2cd460 100644
--- a/target/linux/ath79/image/nand.mk
+++ b/target/linux/ath79/image/nand.mk
@@ -147,6 +147,24 @@ define Device/glinet_gl-ar750s-nor
 endef
 TARGET_DEVICES += glinet_gl-ar750s-nor
 
+define Device/glinet_gl-e750
+  SOC := qca9531
+  DEVICE_VENDOR := GL.iNet
+  DEVICE_MODEL := GL-E750
+  DEVICE_PACKAGES := kmod-ath10k-ct ath10k-firmware-qca9887-ct kmod-usb2
+  SUPPORTED_DEVICES += gl-e750
+  KERNEL_SIZE := 4096k
+  IMAGE_SIZE := 131072k
+  PAGESIZE := 2048
+  VID_HDR_OFFSET := 2048
+  BLOCKSIZE := 128k
+  IMAGES += factory.img
+  IMAGE/factory.img := append-kernel | pad-to $$$$(KERNEL_SIZE) | \
+       append-ubi | check-kernel-size $$$$(KERNEL_SIZE)
+  IMAGE/sysupgrade.bin := sysupgrade-tar | append-metadata
+endef
+TARGET_DEVICES += glinet_gl-e750
+
 # fake rootfs is mandatory, pad-offset 129 equals (2 * uimage_header + 0xff)
 define Device/netgear_ath79_nand
   DEVICE_VENDOR := NETGEAR
diff --git a/target/linux/ath79/nand/base-files/etc/board.d/02_network 
b/target/linux/ath79/nand/base-files/etc/board.d/02_network
index 84cdfd9..d15c420 100755
--- a/target/linux/ath79/nand/base-files/etc/board.d/02_network
+++ b/target/linux/ath79/nand/base-files/etc/board.d/02_network
@@ -20,6 +20,9 @@ ath79_setup_interfaces()
                ucidef_add_switch "switch0" \
                        "0@eth0" "2:lan:2" "3:lan:1" "1:wan"
                ;;
+       glinet,gl-e750)
+                ucidef_set_interface_lan "eth0"
+               ;;
        netgear,wndr3700-v4|\
        netgear,wndr4300|\
        netgear,wndr4300sw|\
diff --git 
a/target/linux/ath79/nand/base-files/etc/hotplug.d/ieee80211/10-fix-wifi-mac 
b/target/linux/ath79/nand/base-files/etc/hotplug.d/ieee80211/10-fix-wifi-mac
index 6c61e5d..cd306f8 100644
--- a/target/linux/ath79/nand/base-files/etc/hotplug.d/ieee80211/10-fix-wifi-mac
+++ b/target/linux/ath79/nand/base-files/etc/hotplug.d/ieee80211/10-fix-wifi-mac
@@ -15,4 +15,12 @@ case $board in
                [ "$PHYNBR" -eq 1 ] && \
                        mtd_get_mac_ascii u-boot-env ethaddr > 
/sys${DEVPATH}/macaddress
                ;;
+       glinet,gl-e750)
+               # Set mac address for 5g device
+               [ "$PHYNBR" -eq 0 ] && {
+                       mac=$(mtd_get_mac_binary art 0)
+                       mac_5g=$(macaddr_add $mac 2)
+                       echo "$mac_5g" > /sys${DEVPATH}/macaddress
+               }
+               ;;
 esac
-- 
2.7.4




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