realtek: add support for NicGiga S100-0800S-M

The NicGiga S100-0800S-M is an 8-port 10G SFP+ managed switch built on
the Realtek RTL9303 reference design (vendor U-Boot reports board model
"RTL9303_8XGE", board id 1). It is closely related to the TP-Link
TL-ST1008F v2 and shares its general layout, but differs in how the SFP
cages and port LEDs are wired (see below).

This DTS is derived from the TP-Link TL-ST1008F v2 support added by
Jonas Jelonek <jelonek.jonas@gmail.com> and Balazs Triszka
<balika011@gmail.com> in commit 39b9b491bb ("realtek: add support for
TP-Link TL-ST1008F v2.0").

Specifications:
- SoC: Realtek RTL9303
- RAM: 512 MiB DDR3
- Flash: 32 MiB SPI-NOR
- Ethernet: 8x 10G SFP+ (RTL9303 SerDes 2-9)
- UART: 115200 8N1 on the front-panel RJ45 console port (Cisco-style pinout)

MAC address:
The MAC addresses are read from the ethaddr variable in the vendor U-Boot
environment via the u-boot-env nvmem layout: the base address is assigned
to the SoC ethernet controller and an incrementing per-port offset to each
SFP port.

SFP presence and port LEDs:
Unlike the TP-Link TL-ST1008F v2, this board does not route the cage
MOD_ABS lines to the SoC GPIO controller (gpio0 pins 0-7 read stuck-low,
so an empty cage reads "present"), and the single PCA9534 I2C expander is
fully used for TX_DISABLE. No mod-def0-gpio is therefore provided; module
presence, including runtime hot-insertion and removal, is detected by
polling the SFP EEPROM over I2C. Each cage has a single green LED, driven
active-low.

Installation:
Interrupt the vendor U-Boot and TFTP-boot an OpenWrt initramfs image:
  setenv ipaddr 192.168.1.1
  setenv serverip <tftp-server>
  tftpboot 0x82000000 <...-initramfs-kernel.bin>
  bootm 0x82000000
From the running initramfs, flash with:
  sysupgrade -n <...-squashfs-sysupgrade.bin>

Signed-off-by: Greg Patrick <gregspatrick@hotmail.com>
Link: https://github.com/openwrt/openwrt/pull/23579
Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>

diff --git a/target/linux/realtek/dts/rtl9303_nicgiga_s100-0800s-m.dts b/target/linux/realtek/dts/rtl9303_nicgiga_s100-0800s-m.dts
new file mode 100644 (file)
index 0000000..924802b
--- /dev/null
+++ b/target/linux/realtek/dts/rtl9303_nicgiga_s100-0800s-m.dts
@@ -0,0 +1,287 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "rtl930x.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/leds/common.h>
+
+/ {
+       compatible = "nicgiga,s100-0800s-m", "realtek,rtl930x-soc";
+       model = "NicGiga S100-0800S-M";
+
+       memory@0 {
+               device_type = "memory";
+               reg = <0x00000000 0x10000000>, /* first 256 MiB */
+                     <0x20000000 0x10000000>; /* remaining 256 MiB */
+       };
+
+       chosen {
+               stdout-path = "serial0:115200n8";
+       };
+
+       led_set {
+               compatible = "realtek,rtl9300-leds";
+               active-low;
+
+               /* One green LED per SFP cage, lit on link + activity at any speed. */
+               led_set0 = <(RTL93XX_LED_SET_10G | RTL93XX_LED_SET_5G | RTL93XX_LED_SET_2P5G |
+                            RTL93XX_LED_SET_1G | RTL93XX_LED_SET_100M | RTL93XX_LED_SET_10M |
+                            RTL93XX_LED_SET_LINK | RTL93XX_LED_SET_ACT)>;
+       };
+
+       i2c_gpio {
+               compatible = "i2c-gpio";
+               #address-cells = <1>;
+               #size-cells = <0>;
+               i2c-gpio,delay-us = <2>;
+               scl-gpios = <&gpio0 22 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+               sda-gpios = <&gpio0 23 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+
+               gpioexp0: i2c@38 {
+                       reg = <0x38>;
+                       compatible = "nxp,pca9534";
+                       gpio-controller;
+                       #gpio-cells = <2>;
+               };
+       };
+
+       /*
+        * The related TP-Link TL-ST1008F v2 (same RTL9303 reference design)
+        * routes the SFP cage MOD_ABS lines to gpio0 pins 0-7, but on this
+        * board those pins read stuck-low under OpenWrt (an empty cage still
+        * reads "present"), and the PCA9534 expander is fully consumed by
+        * TX_DISABLE. No mod-def0-gpio is therefore wired up; module presence
+        * is instead detected by polling the SFP EEPROM over I2C, which also
+        * handles runtime hot-insertion and removal.
+        */
+       sfp0: sfp-p1 {
+               compatible = "sff,sfp";
+               i2c-bus = <&i2c0>;
+               tx-disable-gpio = <&gpioexp0 0 GPIO_ACTIVE_HIGH>;
+               maximum-power-milliwatt = <2900>;
+               #thermal-sensor-cells = <0>;
+       };
+
+       sfp1: sfp-p2 {
+               compatible = "sff,sfp";
+               i2c-bus = <&i2c1>;
+               tx-disable-gpio = <&gpioexp0 1 GPIO_ACTIVE_HIGH>;
+               maximum-power-milliwatt = <1500>;
+               #thermal-sensor-cells = <0>;
+       };
+
+       sfp2: sfp-p3 {
+               compatible = "sff,sfp";
+               i2c-bus = <&i2c2>;
+               tx-disable-gpio = <&gpioexp0 2 GPIO_ACTIVE_HIGH>;
+               maximum-power-milliwatt = <1500>;
+               #thermal-sensor-cells = <0>;
+       };
+
+       sfp3: sfp-p4 {
+               compatible = "sff,sfp";
+               i2c-bus = <&i2c3>;
+               tx-disable-gpio = <&gpioexp0 3 GPIO_ACTIVE_HIGH>;
+               maximum-power-milliwatt = <2000>;
+               #thermal-sensor-cells = <0>;
+       };
+
+       sfp4: sfp-p5 {
+               compatible = "sff,sfp";
+               i2c-bus = <&i2c4>;
+               tx-disable-gpio = <&gpioexp0 4 GPIO_ACTIVE_HIGH>;
+               maximum-power-milliwatt = <2000>;
+               #thermal-sensor-cells = <0>;
+       };
+
+       sfp5: sfp-p6 {
+               compatible = "sff,sfp";
+               i2c-bus = <&i2c5>;
+               tx-disable-gpio = <&gpioexp0 5 GPIO_ACTIVE_HIGH>;
+               maximum-power-milliwatt = <1500>;
+               #thermal-sensor-cells = <0>;
+       };
+
+       sfp6: sfp-p7 {
+               compatible = "sff,sfp";
+               i2c-bus = <&i2c6>;
+               tx-disable-gpio = <&gpioexp0 6 GPIO_ACTIVE_HIGH>;
+               maximum-power-milliwatt = <1500>;
+               #thermal-sensor-cells = <0>;
+       };
+
+       sfp7: sfp-p8 {
+               compatible = "sff,sfp";
+               i2c-bus = <&i2c7>;
+               tx-disable-gpio = <&gpioexp0 7 GPIO_ACTIVE_HIGH>;
+               maximum-power-milliwatt = <2900>;
+               #thermal-sensor-cells = <0>;
+       };
+
+       watchdog {
+               compatible = "linux,wdt-gpio";
+               gpios = <&gpio0 21 GPIO_ACTIVE_HIGH>;
+               hw_algo = "toggle";
+               hw_margin_ms = <1200>;
+               always-running;
+       };
+};
+
+&i2c_mst1 {
+       status = "okay";
+
+       /* SDA0-7 correspond to GPIO9-16 */
+       i2c0: i2c@0 { reg = <0>; };
+       i2c1: i2c@1 { reg = <1>; };
+       i2c2: i2c@2 { reg = <2>; };
+       i2c3: i2c@3 { reg = <3>; };
+       i2c4: i2c@4 { reg = <4>; };
+       i2c5: i2c@5 { reg = <5>; };
+       i2c6: i2c@6 { reg = <6>; };
+       i2c7: i2c@7 { reg = <7>; };
+};
+
+&spi0 {
+       status = "okay";
+
+       flash@0 {
+               compatible = "jedec,spi-nor";
+               reg = <0>;
+               spi-max-frequency = <100000000>;
+
+               partitions {
+                       compatible = "fixed-partitions";
+                       #address-cells = <1>;
+                       #size-cells = <1>;
+
+                       partition@0 {
+                               label = "u-boot";
+                               reg = <0x0 0xe0000>;
+                               read-only;
+                       };
+
+                       partition@e0000 {
+                               label = "u-boot-env";
+                               reg = <0xe0000 0x10000>;
+
+                               nvmem-layout {
+                                       compatible = "u-boot,env";
+
+                                       macaddr_ubootenv_ethaddr: ethaddr {
+                                               #nvmem-cell-cells = <1>;
+                                       };
+                               };
+                       };
+
+                       partition@f0000 {
+                               label = "u-boot-env2";
+                               reg = <0xf0000 0x10000>;
+                               read-only;
+                       };
+
+                       partition@100000 {
+                               label = "jffs2-cfg";
+                               reg = <0x100000 0x100000>;
+                       };
+
+                       partition@200000 {
+                               label = "jffs2-log";
+                               reg = <0x200000 0x100000>;
+                       };
+
+                       partition@300000 {
+                               compatible = "openwrt,uimage", "denx,uimage";
+                               reg = <0x300000 0x1d00000>;
+                               label = "firmware";
+                               openwrt,ih-magic = <0x93030000>;
+                       };
+               };
+       };
+};
+
+&switch0 {
+       ethernet-ports {
+               #address-cells = <1>;
+               #size-cells = <0>;
+
+               SWITCH_PORT_SFP(0, 1, 2, 0, 0)
+               SWITCH_PORT_SFP(8, 2, 3, 0, 1)
+               SWITCH_PORT_SFP(16, 3, 4, 0, 2)
+               SWITCH_PORT_SFP(20, 4, 5, 0, 3)
+               SWITCH_PORT_SFP(24, 5, 6, 0, 4)
+               SWITCH_PORT_SFP(25, 6, 7, 0, 5)
+               SWITCH_PORT_SFP(26, 7, 8, 0, 6)
+               SWITCH_PORT_SFP(27, 8, 9, 0, 7)
+
+               port@1c {
+                       ethernet = <&ethernet0>;
+                       reg = <28>;
+                       phy-mode = "internal";
+
+                       fixed-link {
+                               speed = <1000>;
+                               full-duplex;
+                       };
+               };
+       };
+};
+
+&ethernet0 {
+       nvmem-cells = <&macaddr_ubootenv_ethaddr 0>;
+       nvmem-cell-names = "mac-address";
+};
+
+&port0 {
+       nvmem-cells = <&macaddr_ubootenv_ethaddr 1>;
+       nvmem-cell-names = "mac-address";
+};
+
+&port8 {
+       nvmem-cells = <&macaddr_ubootenv_ethaddr 2>;
+       nvmem-cell-names = "mac-address";
+};
+
+&port16 {
+       nvmem-cells = <&macaddr_ubootenv_ethaddr 3>;
+       nvmem-cell-names = "mac-address";
+};
+
+&port20 {
+       nvmem-cells = <&macaddr_ubootenv_ethaddr 4>;
+       nvmem-cell-names = "mac-address";
+};
+
+&port24 {
+       nvmem-cells = <&macaddr_ubootenv_ethaddr 5>;
+       nvmem-cell-names = "mac-address";
+};
+
+&port25 {
+       nvmem-cells = <&macaddr_ubootenv_ethaddr 6>;
+       nvmem-cell-names = "mac-address";
+};
+
+&port26 {
+       nvmem-cells = <&macaddr_ubootenv_ethaddr 7>;
+       nvmem-cell-names = "mac-address";
+};
+
+&port27 {
+       nvmem-cells = <&macaddr_ubootenv_ethaddr 8>;
+       nvmem-cell-names = "mac-address";
+};
+
+&thermal_zones {
+       sfp-thermal {
+               polling-delay-passive = <10000>;
+               polling-delay = <10000>;
+               thermal-sensors = <&sfp0>, <&sfp1>, <&sfp2>, <&sfp3>, <&sfp4>, <&sfp5>, <&sfp6>, <&sfp7>;
+               trips {
+                       sfp-crit {
+                               temperature = <110000>;
+                               hysteresis = <1000>;
+                               type = "critical";
+                       };
+               };
+       };
+};

diff --git a/target/linux/realtek/image/rtl930x.mk b/target/linux/realtek/image/rtl930x.mk
index 9b01f629ac254faed47c892725d4cb02bfbe4276..f4b7a67effa251517efc3c400bd6c176617d3ad4 100644 (file)
--- a/target/linux/realtek/image/rtl930x.mk
+++ b/target/linux/realtek/image/rtl930x.mk
@@ -97,6 +97,17 @@ define Device/horaco_zx-swtgw2c8f
 endef
 TARGET_DEVICES += horaco_zx-swtgw2c8f
 
+define Device/nicgiga_s100-0800s-m
+  SOC := rtl9303
+  UIMAGE_MAGIC := 0x93030000
+  DEVICE_VENDOR := NicGiga
+  DEVICE_MODEL := S100-0800S-M
+  DEVICE_PACKAGES := kmod-gpio-pca953x
+  IMAGE_SIZE := 29696k
+  $(Device/kernel-lzma)
+endef
+TARGET_DEVICES += nicgiga_s100-0800s-m
+
 define Device/plasmacloud-common
   SOC := rtl9302
   UIMAGE_MAGIC := 0x93000000