[openwrt/openwrt] realtek: add support for Netgear GS108T v3

[LEDE Commits]

ynezz pushed a commit to openwrt/openwrt.git, branch master:
https://git.openwrt.org/8cbd6f51174995c639dfb14faed46b4ba33542b8

commit 8cbd6f51174995c639dfb14faed46b4ba33542b8
Author: Michael Mohr <akihana at gmail.com>
AuthorDate: Fri Jan 8 21:35:47 2021 -0800

    realtek: add support for Netgear GS108T v3
    
    The Netgear GS108T v3 is an 8 port gigabit switch with PoE-PD support
    on port 1.  The two prior versions were built using eCos and are not
    currently compatible with OpenWRT.
    
    The GS108T v3 is quite similar to both the GS110TPP v1 and GS110TP v3,
    all of which use the same firmware image from Netgear.  For this reason,
    the device tree is identical aside from the model and compatible values.
    
    All of the above feature a dual firmware layout, referred to as Image0
    and Image1 in the Netgear firmware.
    
    Hardware specification
    ----------------------
    
     * RTL8380M SoC, 1 MIPS 4KEc core @ 500MHz
     * 128MB DDR3-1600 DRAM (Winbond W631GG8MB-12)
     * 32MB 3v NOR SPI Flash (Macronix MX25L25635F or Winbond W25Q256JVFIQ)
     * RTL8231 GPIO extender to control the LEDs and the reset button
     * 8 x 10/100/1000BASE-T ports, internal PHY (RTL8218B)
     * UART (115200 8N1) via unpopulated standard 0.1" pin header marked J1
     * Power is supplied via a 12V 1A barrel connector or 802.3af
    
    UART pinout
    -----------
    
    J1 | [o]ooo
          ^ ||`------ GND
          | |`------- RX         [TX out of the serial adapter]
          | `-------- TX         [RX into the serial adapter]
          `---------- Vcc (3V3)  [the square pin]
    
    The through holes are filled with PB-free solder which melts at 375C.
    They can also be drilled using a 0.9mm bit.
    
    Build configuration
    -------------------
    
     * Target System: Realtek MIPS
     * Target Profile: Netgear GS108T v3
     * Target Images -> ramdisk -> Compression: lzma
     * Disable other target images
    
    Boot initramfs image from U-Boot
    --------------------------------
    
     1. Press the Escape key at the `Hit Esc key to stop autoboot` prompt
     2. Init network with `rtk network on` command
     3. Load image with `tftpboot 0x8f000000 openwrt-realtek-generic-netgear_gs108t-v3-initramfs-kernel.bin` command
     4. Boot the image with `bootm` command
    
    The switch defaults to IP 192.168.1.1 and tries to fetch the image via
    TFTP from 192.168.1.111.
    
    Updating the installed firmware
    -------------------------------
    
    The OpenWRT ramdisk image can be flashed directly from the Netgear UI.
    The Image0 slot should be used in order to enable sysupgrade.
    
    As with similar switches, changing the active boot partition can be
    accomplished in U-Boot as follows:
    
     1. Press the Escape key at the `Hit Esc key to stop autoboot` prompt
     2. Run `setsys bootpartition {0|1}` to select the boot partition
     3. Run `savesys` followed by `boota` to proceed with the boot process
    
    Signed-off-by: Michael Mohr <akihana at gmail.com>
---
 target/linux/realtek/dts/rtl8380_netgear_gs108t-v3.dts | 8 ++++++++
 target/linux/realtek/image/Makefile                    | 7 +++++++
 2 files changed, 15 insertions(+)

diff --git a/target/linux/realtek/dts/rtl8380_netgear_gs108t-v3.dts b/target/linux/realtek/dts/rtl8380_netgear_gs108t-v3.dts
new file mode 100644
index 0000000000..080fee6107
--- /dev/null
+++ b/target/linux/realtek/dts/rtl8380_netgear_gs108t-v3.dts
@@ -0,0 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "rtl8380_netgear_gigabit.dtsi"
+
+/ {
+	compatible = "netgear,gs108t-v3", "realtek,rtl838x-soc";
+	model = "Netgear GS108T v3";
+};
diff --git a/target/linux/realtek/image/Makefile b/target/linux/realtek/image/Makefile
index c875aca2a6..424726c8a9 100644
--- a/target/linux/realtek/image/Makefile
+++ b/target/linux/realtek/image/Makefile
@@ -70,6 +70,13 @@ define Device/d-link_dgs-1210-28
 endef
 TARGET_DEVICES += d-link_dgs-1210-28
 
+define Device/netgear_gs108t-v3
+  $(Device/netgear_nge)
+  DEVICE_MODEL := GS108T
+  DEVICE_VARIANT := v3
+endef
+TARGET_DEVICES += netgear_gs108t-v3
+
 define Device/netgear_gs110tpp-v1
   $(Device/netgear_nge)
   DEVICE_MODEL := GS110TPP