realtek: rtl839x: rename GS1900 series v1/v2 to A1/B1
authorStijn Segers <[email protected]>
Sun, 21 Sep 2025 10:00:28 +0000 (12:00 +0200)
committerRobert Marko <[email protected]>
Wed, 24 Sep 2025 11:41:04 +0000 (13:41 +0200)
Zyxel labels their switch revisions A1, B1, ... and not v1, v2, ...
Rename the devices as such in OpenWrt to match the labels. Of note:
the first (A1) revision is never labeled as such on the label, just
in the web UI. Provide compatibles for seamless sysupgrade.

For a recent overview of Zyxel GS1900 series revisions, see the
table linked in https://forum.openwrt.org/t//57875/3874.

Signed-off-by: Stijn Segers <[email protected]>
Link: https://github.com/openwrt/openwrt/pull/20118
Signed-off-by: Robert Marko <[email protected]>
target/linux/realtek/dts/rtl8393_zyxel_gs1900-48-a1.dts [new file with mode: 0644]
target/linux/realtek/dts/rtl8393_zyxel_gs1900-48.dts [deleted file]
target/linux/realtek/image/rtl839x.mk

diff --git a/target/linux/realtek/dts/rtl8393_zyxel_gs1900-48-a1.dts b/target/linux/realtek/dts/rtl8393_zyxel_gs1900-48-a1.dts
new file mode 100644 (file)
index 0000000..c236957
--- /dev/null
@@ -0,0 +1,304 @@
+/dts-v1/;
+
+#include "rtl839x.dtsi"
+
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/gpio/gpio.h>
+
+/ {
+       compatible = "zyxel,gs1900-48-a1", "realtek,rtl8393-soc";
+       model = "Zyxel GS1900-48 A1";
+
+       aliases {
+               led-boot = &led_sys;
+               led-failsafe = &led_sys;
+               led-running = &led_sys;
+               led-upgrade = &led_sys;
+       };
+
+       memory@0 {
+               device_type = "memory";
+               reg = <0x0 0x8000000>;
+       };
+
+       leds {
+               pinctrl-names = "default";
+               pinctrl-0 = <&pinmux_disable_sys_led>;
+               compatible = "gpio-leds";
+
+               led_sys: sys {
+                       label = "green:sys";
+                       gpios = <&gpio0 0 GPIO_ACTIVE_HIGH>;
+               };
+       };
+
+       keys {
+               compatible = "gpio-keys-polled";
+               poll-interval = <20>;
+
+               reset {
+                       label = "reset";
+                       gpios = <&gpio1 3 GPIO_ACTIVE_LOW>;
+                       linux,code = <KEY_RESTART>;
+                       debounce-interval = <100>;
+               };
+       };
+
+       /* i2c of the left SFP cage: port 49 */
+       i2c0: i2c-gpio-0 {
+               compatible = "i2c-gpio";
+               sda-gpios = <&gpio1 24 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+               scl-gpios = <&gpio1 25 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+               i2c-gpio,delay-us = <2>;
+               #address-cells = <1>;
+               #size-cells = <0>;
+       };
+
+       sfp0: sfp-p49 {
+               compatible = "sff,sfp";
+               i2c-bus = <&i2c0>;
+               los-gpio = <&gpio1 27 GPIO_ACTIVE_HIGH>;
+               tx-fault-gpio = <&gpio1 22 GPIO_ACTIVE_HIGH>;
+               mod-def0-gpio = <&gpio1 26 GPIO_ACTIVE_LOW>;
+               tx-disable-gpio = <&gpio1 23 GPIO_ACTIVE_HIGH>;
+       };
+
+       /* i2c of the right SFP cage: port 50 */
+       i2c1: i2c-gpio-1 {
+               compatible = "i2c-gpio";
+               sda-gpios = <&gpio1 30 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+               scl-gpios = <&gpio1 31 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+               i2c-gpio,delay-us = <2>;
+               #address-cells = <1>;
+               #size-cells = <0>;
+       };
+
+       sfp1: sfp-p50 {
+               compatible = "sff,sfp";
+               i2c-bus = <&i2c1>;
+               los-gpio = <&gpio1 33 GPIO_ACTIVE_HIGH>;
+               tx-fault-gpio = <&gpio1 28 GPIO_ACTIVE_HIGH>;
+               mod-def0-gpio = <&gpio1 32 GPIO_ACTIVE_LOW>;
+               tx-disable-gpio = <&gpio1 29 GPIO_ACTIVE_HIGH>;
+       };
+};
+
+&mdio_aux {
+       status = "okay";
+
+       gpio1: expander@3 {
+               compatible = "realtek,rtl8231";
+               reg = <3>;
+
+               gpio-controller;
+               #gpio-cells = <2>;
+               gpio-ranges = <&gpio1 0 0 37>;
+
+               led-controller {
+                       compatible = "realtek,rtl8231-leds";
+                       status = "disabled";
+               };
+       };
+};
+
+&spi0 {
+       status = "okay";
+       flash@0 {
+               compatible = "jedec,spi-nor";
+               reg = <0>;
+               spi-max-frequency = <10000000>;
+
+               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>;
+                       };
+                       partition@50000 {
+                               label = "u-boot-env2";
+                               reg = <0x50000 0x10000>;
+                       };
+                       partition@60000 {
+                               label = "jffs";
+                               reg = <0x60000 0x100000>;
+                       };
+                       partition@160000 {
+                               label = "jffs2";
+                               reg = <0x160000 0x100000>;
+                       };
+                       partition@260000 {
+                               label = "firmware";
+                               reg = <0x260000 0xda0000>;
+                               compatible = "openwrt,uimage", "denx,uimage";
+                               openwrt,ih-magic = <0x83800000>;
+                       };
+               };
+       };
+};
+
+&mdio_bus0 {
+       /* External phy RTL8218B #1 */
+       EXTERNAL_PHY(0)
+       EXTERNAL_PHY(1)
+       EXTERNAL_PHY(2)
+       EXTERNAL_PHY(3)
+       EXTERNAL_PHY(4)
+       EXTERNAL_PHY(5)
+       EXTERNAL_PHY(6)
+       EXTERNAL_PHY(7)
+
+       /* External phy RTL8218B #2 */
+       EXTERNAL_PHY(8)
+       EXTERNAL_PHY(9)
+       EXTERNAL_PHY(10)
+       EXTERNAL_PHY(11)
+       EXTERNAL_PHY(12)
+       EXTERNAL_PHY(13)
+       EXTERNAL_PHY(14)
+       EXTERNAL_PHY(15)
+
+       /* External phy RTL8218B #3 */
+       EXTERNAL_PHY(16)
+       EXTERNAL_PHY(17)
+       EXTERNAL_PHY(18)
+       EXTERNAL_PHY(19)
+       EXTERNAL_PHY(20)
+       EXTERNAL_PHY(21)
+       EXTERNAL_PHY(22)
+       EXTERNAL_PHY(23)
+
+       /* External phy RTL8218B #4 */
+       EXTERNAL_PHY(24)
+       EXTERNAL_PHY(25)
+       EXTERNAL_PHY(26)
+       EXTERNAL_PHY(27)
+       EXTERNAL_PHY(28)
+       EXTERNAL_PHY(29)
+       EXTERNAL_PHY(30)
+       EXTERNAL_PHY(31)
+
+       /* External phy RTL8218B #5 */
+       EXTERNAL_PHY(32)
+       EXTERNAL_PHY(33)
+       EXTERNAL_PHY(34)
+       EXTERNAL_PHY(35)
+       EXTERNAL_PHY(36)
+       EXTERNAL_PHY(37)
+       EXTERNAL_PHY(38)
+       EXTERNAL_PHY(39)
+
+       /* External phy RTL8218B #6 */
+       EXTERNAL_PHY(40)
+       EXTERNAL_PHY(41)
+       EXTERNAL_PHY(42)
+       EXTERNAL_PHY(43)
+       EXTERNAL_PHY(44)
+       EXTERNAL_PHY(45)
+       EXTERNAL_PHY(46)
+       EXTERNAL_PHY(47)
+
+       /* RTL8393 Internal SerDes */
+       INTERNAL_PHY_SDS(48, 12)
+       INTERNAL_PHY_SDS(49, 13)
+};
+
+&switch0 {
+       ports {
+               #address-cells = <1>;
+               #size-cells = <0>;
+
+               SWITCH_PORT(0, 1, qsgmii)
+               SWITCH_PORT(1, 2, qsgmii)
+               SWITCH_PORT(2, 3, qsgmii)
+               SWITCH_PORT(3, 4, qsgmii)
+               SWITCH_PORT(4, 5, qsgmii)
+               SWITCH_PORT(5, 6, qsgmii)
+               SWITCH_PORT(6, 7, qsgmii)
+               SWITCH_PORT(7, 8, qsgmii)
+
+               SWITCH_PORT(8, 9, qsgmii)
+               SWITCH_PORT(9, 10, qsgmii)
+               SWITCH_PORT(10, 11, qsgmii)
+               SWITCH_PORT(11, 12, qsgmii)
+               SWITCH_PORT(12, 13, qsgmii)
+               SWITCH_PORT(13, 14, qsgmii)
+               SWITCH_PORT(14, 15, qsgmii)
+               SWITCH_PORT(15, 16, qsgmii)
+
+               SWITCH_PORT(16, 17, qsgmii)
+               SWITCH_PORT(17, 18, qsgmii)
+               SWITCH_PORT(18, 19, qsgmii)
+               SWITCH_PORT(19, 20, qsgmii)
+               SWITCH_PORT(20, 21, qsgmii)
+               SWITCH_PORT(21, 22, qsgmii)
+               SWITCH_PORT(22, 23, qsgmii)
+               SWITCH_PORT(23, 24, qsgmii)
+
+               SWITCH_PORT(24, 25, qsgmii)
+               SWITCH_PORT(25, 26, qsgmii)
+               SWITCH_PORT(26, 27, qsgmii)
+               SWITCH_PORT(27, 28, qsgmii)
+               SWITCH_PORT(28, 29, qsgmii)
+               SWITCH_PORT(29, 30, qsgmii)
+               SWITCH_PORT(30, 31, qsgmii)
+               SWITCH_PORT(31, 32, qsgmii)
+
+               SWITCH_PORT(32, 33, qsgmii)
+               SWITCH_PORT(33, 34, qsgmii)
+               SWITCH_PORT(34, 35, qsgmii)
+               SWITCH_PORT(35, 36, qsgmii)
+               SWITCH_PORT(36, 37, qsgmii)
+               SWITCH_PORT(37, 38, qsgmii)
+               SWITCH_PORT(38, 39, qsgmii)
+               SWITCH_PORT(39, 40, qsgmii)
+
+               SWITCH_PORT(40, 41, qsgmii)
+               SWITCH_PORT(41, 42, qsgmii)
+               SWITCH_PORT(42, 43, qsgmii)
+               SWITCH_PORT(43, 44, qsgmii)
+               SWITCH_PORT(44, 45, qsgmii)
+               SWITCH_PORT(45, 46, qsgmii)
+               SWITCH_PORT(46, 47, qsgmii)
+               SWITCH_PORT(47, 48, qsgmii)
+
+               /* SFP cages */
+               port@48 {
+                       reg = <48>;
+                       label = "lan49";
+                       pcs-handle = <&serdes12>;
+                       phy-mode = "1000base-x";
+                       phy-handle = <&phy48>;
+                       managed = "in-band-status";
+                       sfp = <&sfp0>;
+               };
+
+               port@49 {
+                       reg = <49>;
+                       label = "lan50";
+                       pcs-handle = <&serdes13>;
+                       phy-mode = "1000base-x";
+                       phy-handle = <&phy49>;
+                       managed = "in-band-status";
+                       sfp = <&sfp1>;
+               };
+
+               /* CPU-Port */
+               port@52 {
+                       ethernet = <&ethernet0>;
+                       reg = <52>;
+                       phy-mode = "internal";
+                       fixed-link {
+                               speed = <1000>;
+                               full-duplex;
+                       };
+               };
+       };
+};
diff --git a/target/linux/realtek/dts/rtl8393_zyxel_gs1900-48.dts b/target/linux/realtek/dts/rtl8393_zyxel_gs1900-48.dts
deleted file mode 100644 (file)
index de53263..0000000
+++ /dev/null
@@ -1,304 +0,0 @@
-/dts-v1/;
-
-#include "rtl839x.dtsi"
-
-#include <dt-bindings/input/input.h>
-#include <dt-bindings/gpio/gpio.h>
-
-/ {
-       compatible = "zyxel,gs1900-48", "realtek,rtl8393-soc";
-       model = "Zyxel GS1900-48";
-
-       aliases {
-               led-boot = &led_sys;
-               led-failsafe = &led_sys;
-               led-running = &led_sys;
-               led-upgrade = &led_sys;
-       };
-
-       memory@0 {
-               device_type = "memory";
-               reg = <0x0 0x8000000>;
-       };
-
-       leds {
-               pinctrl-names = "default";
-               pinctrl-0 = <&pinmux_disable_sys_led>;
-               compatible = "gpio-leds";
-
-               led_sys: sys {
-                       label = "green:sys";
-                       gpios = <&gpio0 0 GPIO_ACTIVE_HIGH>;
-               };
-       };
-
-       keys {
-               compatible = "gpio-keys-polled";
-               poll-interval = <20>;
-
-               reset {
-                       label = "reset";
-                       gpios = <&gpio1 3 GPIO_ACTIVE_LOW>;
-                       linux,code = <KEY_RESTART>;
-                       debounce-interval = <100>;
-               };
-       };
-
-       /* i2c of the left SFP cage: port 49 */
-       i2c0: i2c-gpio-0 {
-               compatible = "i2c-gpio";
-               sda-gpios = <&gpio1 24 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
-               scl-gpios = <&gpio1 25 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
-               i2c-gpio,delay-us = <2>;
-               #address-cells = <1>;
-               #size-cells = <0>;
-       };
-
-       sfp0: sfp-p49 {
-               compatible = "sff,sfp";
-               i2c-bus = <&i2c0>;
-               los-gpio = <&gpio1 27 GPIO_ACTIVE_HIGH>;
-               tx-fault-gpio = <&gpio1 22 GPIO_ACTIVE_HIGH>;
-               mod-def0-gpio = <&gpio1 26 GPIO_ACTIVE_LOW>;
-               tx-disable-gpio = <&gpio1 23 GPIO_ACTIVE_HIGH>;
-       };
-
-       /* i2c of the right SFP cage: port 50 */
-       i2c1: i2c-gpio-1 {
-               compatible = "i2c-gpio";
-               sda-gpios = <&gpio1 30 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
-               scl-gpios = <&gpio1 31 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
-               i2c-gpio,delay-us = <2>;
-               #address-cells = <1>;
-               #size-cells = <0>;
-       };
-
-       sfp1: sfp-p50 {
-               compatible = "sff,sfp";
-               i2c-bus = <&i2c1>;
-               los-gpio = <&gpio1 33 GPIO_ACTIVE_HIGH>;
-               tx-fault-gpio = <&gpio1 28 GPIO_ACTIVE_HIGH>;
-               mod-def0-gpio = <&gpio1 32 GPIO_ACTIVE_LOW>;
-               tx-disable-gpio = <&gpio1 29 GPIO_ACTIVE_HIGH>;
-       };
-};
-
-&mdio_aux {
-       status = "okay";
-
-       gpio1: expander@3 {
-               compatible = "realtek,rtl8231";
-               reg = <3>;
-
-               gpio-controller;
-               #gpio-cells = <2>;
-               gpio-ranges = <&gpio1 0 0 37>;
-
-               led-controller {
-                       compatible = "realtek,rtl8231-leds";
-                       status = "disabled";
-               };
-       };
-};
-
-&spi0 {
-       status = "okay";
-       flash@0 {
-               compatible = "jedec,spi-nor";
-               reg = <0>;
-               spi-max-frequency = <10000000>;
-
-               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>;
-                       };
-                       partition@50000 {
-                               label = "u-boot-env2";
-                               reg = <0x50000 0x10000>;
-                       };
-                       partition@60000 {
-                               label = "jffs";
-                               reg = <0x60000 0x100000>;
-                       };
-                       partition@160000 {
-                               label = "jffs2";
-                               reg = <0x160000 0x100000>;
-                       };
-                       partition@260000 {
-                               label = "firmware";
-                               reg = <0x260000 0xda0000>;
-                               compatible = "openwrt,uimage", "denx,uimage";
-                               openwrt,ih-magic = <0x83800000>;
-                       };
-               };
-       };
-};
-
-&mdio_bus0 {
-       /* External phy RTL8218B #1 */
-       EXTERNAL_PHY(0)
-       EXTERNAL_PHY(1)
-       EXTERNAL_PHY(2)
-       EXTERNAL_PHY(3)
-       EXTERNAL_PHY(4)
-       EXTERNAL_PHY(5)
-       EXTERNAL_PHY(6)
-       EXTERNAL_PHY(7)
-
-       /* External phy RTL8218B #2 */
-       EXTERNAL_PHY(8)
-       EXTERNAL_PHY(9)
-       EXTERNAL_PHY(10)
-       EXTERNAL_PHY(11)
-       EXTERNAL_PHY(12)
-       EXTERNAL_PHY(13)
-       EXTERNAL_PHY(14)
-       EXTERNAL_PHY(15)
-
-       /* External phy RTL8218B #3 */
-       EXTERNAL_PHY(16)
-       EXTERNAL_PHY(17)
-       EXTERNAL_PHY(18)
-       EXTERNAL_PHY(19)
-       EXTERNAL_PHY(20)
-       EXTERNAL_PHY(21)
-       EXTERNAL_PHY(22)
-       EXTERNAL_PHY(23)
-
-       /* External phy RTL8218B #4 */
-       EXTERNAL_PHY(24)
-       EXTERNAL_PHY(25)
-       EXTERNAL_PHY(26)
-       EXTERNAL_PHY(27)
-       EXTERNAL_PHY(28)
-       EXTERNAL_PHY(29)
-       EXTERNAL_PHY(30)
-       EXTERNAL_PHY(31)
-
-       /* External phy RTL8218B #5 */
-       EXTERNAL_PHY(32)
-       EXTERNAL_PHY(33)
-       EXTERNAL_PHY(34)
-       EXTERNAL_PHY(35)
-       EXTERNAL_PHY(36)
-       EXTERNAL_PHY(37)
-       EXTERNAL_PHY(38)
-       EXTERNAL_PHY(39)
-
-       /* External phy RTL8218B #6 */
-       EXTERNAL_PHY(40)
-       EXTERNAL_PHY(41)
-       EXTERNAL_PHY(42)
-       EXTERNAL_PHY(43)
-       EXTERNAL_PHY(44)
-       EXTERNAL_PHY(45)
-       EXTERNAL_PHY(46)
-       EXTERNAL_PHY(47)
-
-       /* RTL8393 Internal SerDes */
-       INTERNAL_PHY_SDS(48, 12)
-       INTERNAL_PHY_SDS(49, 13)
-};
-
-&switch0 {
-       ports {
-               #address-cells = <1>;
-               #size-cells = <0>;
-
-               SWITCH_PORT(0, 1, qsgmii)
-               SWITCH_PORT(1, 2, qsgmii)
-               SWITCH_PORT(2, 3, qsgmii)
-               SWITCH_PORT(3, 4, qsgmii)
-               SWITCH_PORT(4, 5, qsgmii)
-               SWITCH_PORT(5, 6, qsgmii)
-               SWITCH_PORT(6, 7, qsgmii)
-               SWITCH_PORT(7, 8, qsgmii)
-
-               SWITCH_PORT(8, 9, qsgmii)
-               SWITCH_PORT(9, 10, qsgmii)
-               SWITCH_PORT(10, 11, qsgmii)
-               SWITCH_PORT(11, 12, qsgmii)
-               SWITCH_PORT(12, 13, qsgmii)
-               SWITCH_PORT(13, 14, qsgmii)
-               SWITCH_PORT(14, 15, qsgmii)
-               SWITCH_PORT(15, 16, qsgmii)
-
-               SWITCH_PORT(16, 17, qsgmii)
-               SWITCH_PORT(17, 18, qsgmii)
-               SWITCH_PORT(18, 19, qsgmii)
-               SWITCH_PORT(19, 20, qsgmii)
-               SWITCH_PORT(20, 21, qsgmii)
-               SWITCH_PORT(21, 22, qsgmii)
-               SWITCH_PORT(22, 23, qsgmii)
-               SWITCH_PORT(23, 24, qsgmii)
-
-               SWITCH_PORT(24, 25, qsgmii)
-               SWITCH_PORT(25, 26, qsgmii)
-               SWITCH_PORT(26, 27, qsgmii)
-               SWITCH_PORT(27, 28, qsgmii)
-               SWITCH_PORT(28, 29, qsgmii)
-               SWITCH_PORT(29, 30, qsgmii)
-               SWITCH_PORT(30, 31, qsgmii)
-               SWITCH_PORT(31, 32, qsgmii)
-
-               SWITCH_PORT(32, 33, qsgmii)
-               SWITCH_PORT(33, 34, qsgmii)
-               SWITCH_PORT(34, 35, qsgmii)
-               SWITCH_PORT(35, 36, qsgmii)
-               SWITCH_PORT(36, 37, qsgmii)
-               SWITCH_PORT(37, 38, qsgmii)
-               SWITCH_PORT(38, 39, qsgmii)
-               SWITCH_PORT(39, 40, qsgmii)
-
-               SWITCH_PORT(40, 41, qsgmii)
-               SWITCH_PORT(41, 42, qsgmii)
-               SWITCH_PORT(42, 43, qsgmii)
-               SWITCH_PORT(43, 44, qsgmii)
-               SWITCH_PORT(44, 45, qsgmii)
-               SWITCH_PORT(45, 46, qsgmii)
-               SWITCH_PORT(46, 47, qsgmii)
-               SWITCH_PORT(47, 48, qsgmii)
-
-               /* SFP cages */
-               port@48 {
-                       reg = <48>;
-                       label = "lan49";
-                       pcs-handle = <&serdes12>;
-                       phy-mode = "1000base-x";
-                       phy-handle = <&phy48>;
-                       managed = "in-band-status";
-                       sfp = <&sfp0>;
-               };
-
-               port@49 {
-                       reg = <49>;
-                       label = "lan50";
-                       pcs-handle = <&serdes13>;
-                       phy-mode = "1000base-x";
-                       phy-handle = <&phy49>;
-                       managed = "in-band-status";
-                       sfp = <&sfp1>;
-               };
-
-               /* CPU-Port */
-               port@52 {
-                       ethernet = <&ethernet0>;
-                       reg = <52>;
-                       phy-mode = "internal";
-                       fixed-link {
-                               speed = <1000>;
-                               full-duplex;
-                       };
-               };
-       };
-};
index 5f9b6d56c65de180d51df47cb5d992503a9d2c02..2412e5764e633263234e9db1badbe3ad42172786 100644 (file)
@@ -73,10 +73,12 @@ define Device/tplink_sg2452p-v4
 endef
 TARGET_DEVICES += tplink_sg2452p-v4
 
-define Device/zyxel_gs1900-48
+define Device/zyxel_gs1900-48-a1
   $(Device/zyxel_gs1900)
   SOC := rtl8393
   DEVICE_MODEL := GS1900-48
+  DEVICE_VARIANT := A1
   ZYXEL_VERS := AAHN
+  SUPPORTED_DEVICES += zyxel,gs1900-48
 endef
-TARGET_DEVICES += zyxel_gs1900-48
+TARGET_DEVICES += zyxel_gs1900-48-a1