[PATCH 2/2] realtek: Add ZyXEL GS1900-8

[Hauke Mehrtens]

The ZyXEL GS1900-8 is a 8 port switch without any PoE functionality or
SFP ports, but otherwise similar to the other GS1900 switches.

Serial connection parameters for the device: 115200 8N1.

Installation
------------
Instructions are identical to those for the GS1900-10HP and GS1900-8HP.

* Configure your client with a static 192.168.1.x IP (e.g. 192.168.1.10).
* Set up a TFTP server on your client and make it serve the initramfs
  image.
* Connect serial, power up the switch, interrupt U-boot by hitting the
  space bar, and enable the network:
  > rtk network on
* Since the GS1900-10HP is a dual-partition device, you want to keep the
  OEM firmware on the backup partition for the time being. OpenWrt can
  only boot off the first partition anyway (hardcoded in the DTS). To
  make sure we are manipulating the first partition, issue the following
  commands:
  > setsys bootpartition 0
  > savesys
* Download the image onto the device and boot from it:
  > tftpboot 0x84f00000 192.168.1.10:openwrt-realtek-generic-zyxel_gs1900-8-initramfs-kernel.bin
  > bootm
* Once OpenWrt has booted, scp the sysupgrade image to /tmp and flash it:
  > sysupgrade /tmp/openwrt-realtek-generic-zyxel_gs1900-8-squashfs-sysupgrade.bin

Signed-off-by: Hauke Mehrtens <hauke at hauke-m.de>
---
 package/boot/uboot-envtools/files/realtek           |  1 +
 target/linux/realtek/dts/rtl8380_zyxel_gs1900-8.dts | 12 ++++++++++++
 target/linux/realtek/image/Makefile                 |  6 ++++++
 3 files changed, 19 insertions(+)
 create mode 100644 target/linux/realtek/dts/rtl8380_zyxel_gs1900-8.dts

diff --git a/package/boot/uboot-envtools/files/realtek b/package/boot/uboot-envtools/files/realtek
index 9573e8944f54..a91ca826044e 100644
--- a/package/boot/uboot-envtools/files/realtek
+++ b/package/boot/uboot-envtools/files/realtek
@@ -11,6 +11,7 @@ case "$board" in
 d-link,dgs-1210-16|\
 d-link,dgs-1210-28|\
 d-link,dgs-1210-10p|\
+zyxel,gs1900-8|\
 zyxel,gs1900-8hp-v1|\
 zyxel,gs1900-8hp-v2|\
 zyxel,gs1900-10hp)
diff --git a/target/linux/realtek/dts/rtl8380_zyxel_gs1900-8.dts b/target/linux/realtek/dts/rtl8380_zyxel_gs1900-8.dts
new file mode 100644
index 000000000000..e9c5efe60392
--- /dev/null
+++ b/target/linux/realtek/dts/rtl8380_zyxel_gs1900-8.dts
@@ -0,0 +1,12 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "rtl8380_zyxel_gs1900.dtsi"
+
+/ {
+	compatible = "zyxel,gs1900-8", "realtek,rtl838x-soc";
+	model = "ZyXEL GS1900-8 Switch";
+};
+
+&gpio1 {
+	/delete-node/ poe_enable;
+};
diff --git a/target/linux/realtek/image/Makefile b/target/linux/realtek/image/Makefile
index fcb5e55e7ab6..0a3292119c3a 100644
--- a/target/linux/realtek/image/Makefile
+++ b/target/linux/realtek/image/Makefile
@@ -100,6 +100,12 @@ define Device/zyxel_gs1900-10hp
 endef
 TARGET_DEVICES += zyxel_gs1900-10hp
 
+define Device/zyxel_gs1900-8
+  $(Device/zyxel_gs1900)
+  DEVICE_MODEL := GS1900-8
+endef
+TARGET_DEVICES += zyxel_gs1900-8
+
 define Device/zyxel_gs1900-8hp-v1
   $(Device/zyxel_gs1900)
   DEVICE_MODEL := GS1900-8HP
-- 
2.30.0