ath79: Forward port support for CR3000

The PowerCloud Systems CR3000 was a cloud-managed CPE for a now defunct
NaaS offering.  It was previously supported under the ar71xx branch and
this forward ports that support with some notable differences:

1) Since reverting to stock firmware is now irrelevant there is is only
a single openwrt image generated which uses the entire flash rather than
preserving PowerCloud-specific partitions that are unneeded to openwrt--
those partitions will be erased and used by the openwrt image.

2) Rather than use a non-standard probe order for the ethernet devices,
this image uses a set of 'ip link set ethX name ethY' commands very early
in preinit (before the network is used at all), in order to have the the
switch and Wan use the same ethernet names as in previous images.

3) /etc/config/wireless will need to be regenerated as the path to the
wireless device has changed due to differences in ath79 DT for ar93x
compared to ar71xx images.

4) eth0 is wan and eth1 is lan (switch)

Signed-off-by: Daniel F. Dickinson <cshored@thecshore.com>

4 files changed, 194 insertions, 3 deletions

diff --git a/target/linux/ath79/base-files/etc/board.d/01_leds b/target/linux/ath79/base-files/etc/board.d/01_leds
index e73a0a03c9..6f1bdc6eaf 100755
--- a/target/linux/ath79/base-files/etc/board.d/01_leds
+++ b/target/linux/ath79/base-files/etc/board.d/01_leds
@@ -28,15 +28,19 @@ case "$board" in
 	ucidef_set_led_switch "lan1" "LAN1" "netgear:green:lan1" "switch0" "0x02" "0x0f"
 	ucidef_set_led_switch "lan2" "LAN2" "netgear:green:lan2" "switch0" "0x04" "0x0f"
 	;;
-
 "pcs,cap324")
 	ucidef_set_led_netdev "lan" "LAN" "pcs:lan:green" "eth0"
 	;;
-
+"pcs,cr3000")
+	ucidef_set_led_netdev "wan" "WAN" "pcs:blue:wan" "eth1"
+	ucidef_set_led_switch "lan1" "LAN1" "pcs:blue:lan1" "switch0" "0x04"
+	ucidef_set_led_switch "lan2" "LAN2" "pcs:blue:lan2" "switch0" "0x08"
+	ucidef_set_led_switch "lan3" "LAN3" "pcs:blue:lan3" "switch0" "0x10"
+	ucidef_set_led_switch "lan4" "LAN4" "pcs:blue:lan4" "switch0" "0x02"
+	;;
 "pcs,cr5000")
 	ucidef_set_led_usbdev "usb" "USB" "pcs:white:wps" "1-1"
 	;;
-
 "tplink,re450-v2")
 	ucidef_set_led_netdev "lan_data" "LAN Data" "tp-link:green:lan_data" "eth0" "tx rx"
 	ucidef_set_led_netdev "lan_link" "LAN Link" "tp-link:green:lan_link" "eth0" "link"
diff --git a/target/linux/ath79/base-files/etc/board.d/02_network b/target/linux/ath79/base-files/etc/board.d/02_network
index a4d91fcdf2..0bc187a245 100755
--- a/target/linux/ath79/base-files/etc/board.d/02_network
+++ b/target/linux/ath79/base-files/etc/board.d/02_network
@@ -44,6 +44,12 @@ ath79_setup_interfaces()
 		"0@eth1" "1:lan" "2:lan" "3:lan:3" "4:lan:4"
 		;;
 
+	"pcs,cr3000")
+		ucidef_add_switch "switch0" \
+			"0@eth1" "1:lan:1" "2:lan:4" "3:lan:3" "4:lan:2"
+		ucidef_set_interface_wan "eth0"
+		;;
+
 	"pcs,cr5000")
 		ucidef_add_switch "switch0" \
 			"0@eth0" "1:lan" "2:lan" "3:lan" "4:lan" "5:wan"
diff --git a/target/linux/ath79/dts/ar9341_pcs_cr3000.dts b/target/linux/ath79/dts/ar9341_pcs_cr3000.dts
new file mode 100644
index 0000000000..48ec783058
--- /dev/null
+++ b/target/linux/ath79/dts/ar9341_pcs_cr3000.dts
@@ -0,0 +1,172 @@
+// 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 "ar9341.dtsi"
+
+/ {
+	model = "PowerCloud Systems CR3000";
+	compatible = "pcs,cr3000", "qca,ar9341";
+
+	aliases {
+		serial0 = &uart;
+		led-status = &status;
+	};
+
+	keys {
+		compatible = "gpio-keys-polled";
+		poll-interval = <20>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+		pinctrl-names = "default";
+                pinctrl-0 = <&jtag_disable_pins>;
+
+		reset {
+			label = "Reset button";
+			linux,code = <KEY_RESTART>;
+			gpios = <&gpio 17 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
+
+		wps {
+			label = "WPS button";
+			linux,code = <KEY_WPS_BUTTON>;
+			gpios = <&gpio 16 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		status: power {
+			label = "pcs:amber:power";
+			gpios = <&gpio 15 GPIO_ACTIVE_LOW>;
+			default-state = "on";
+		};
+
+		wlan2g {
+			label = "pcs:blue:wlan";
+			gpios = <&gpio 13 GPIO_ACTIVE_LOW>;
+			default-state = "off";
+			linux,default-trigger = "phy0tpt";
+		};
+
+		wan {
+			label = "pcs:blue:wan";
+			gpios = <&gpio 18 GPIO_ACTIVE_LOW>;
+			default-state = "off";
+		};
+
+		lan1 {
+			label = "pcs:blue:lan1";
+			gpios = <&gpio 19 GPIO_ACTIVE_LOW>;
+			default-state = "off";
+		};
+
+		lan2 {
+			label = "pcs:blue:lan2";
+			gpios = <&gpio 20 GPIO_ACTIVE_LOW>;
+			default-state = "off";
+		};
+
+		lan3 {
+			label = "pcs:blue:lan3";
+			gpios = <&gpio 21 GPIO_ACTIVE_LOW>;
+			default-state = "off";
+		};
+
+		lan4 {
+			label = "pcs:blue:lan4";
+			gpios = <&gpio 22 GPIO_ACTIVE_LOW>;
+			default-state = "off";
+		};
+	};
+};
+
+&ref {
+	clock-frequency = <25000000>;
+};
+
+&uart {
+	status = "okay";
+};
+
+&gpio {
+	status = "okay";
+};
+
+&spi {
+	num-cs = <1>;
+
+	status = "okay";
+
+	flash@0 {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <25000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			uboot: partition@0 {
+				label = "u-boot";
+				reg = <0x000000 0x040000>;
+				read-only;
+			};
+
+			partition@40000 {
+				label = "u-boot-env";
+				reg = <0x040000 0x010000>;
+				read-only;
+			};
+
+			partition@50000 {
+				label = "firmware";
+				reg = <0x050000 0x07a0000>;
+			};
+
+			art: partition@7f0000 {
+				label = "art";
+				reg = <0x7f0000 0x010000>;
+				read-only;
+			};
+		};
+	};
+};
+
+&wmac {
+	status = "okay";
+
+	mtd-cal-data = <&art 0x1000>;
+	mtd-mac-address = <&art 0x1002>;
+};
+
+&eth0 {
+	status = "okay";
+
+	phy-handle = <&swphy0>;
+	mtd-mac-address = <&art 0x0>;
+	mtd-mac-address-increment = <1>;
+
+};
+
+&eth1 {
+	status = "okay";
+
+	phy-handle = <&swphy4>;
+	mtd-mac-address = <&art 0x0>;
+	phy-mode = "gmii";
+	pll-data = <0x06000000 0x00000101 0x00001616>;
+
+	gmac-config {
+		device = <&gmac>;
+		switch-phy-swap = <1>;
+	};
+};
diff --git a/target/linux/ath79/image/generic.mk b/target/linux/ath79/image/generic.mk
index 7695349705..a924fa90b0 100644
--- a/target/linux/ath79/image/generic.mk
+++ b/target/linux/ath79/image/generic.mk
@@ -75,6 +75,15 @@ define Device/pcs_cap324
 endef
 TARGET_DEVICES += pcs_cap324
 
+define Device/pcs_cr3000
+  ATH_SOC := ar9341
+  DEVICE_TITLE := PowerCloud Systems CR3000
+  IMAGE_SIZE := 7808k
+  IMAGES := sysupgrade.bin
+  SUPPORTED_DEVICES += cr3000
+endef
+TARGET_DEVICES += pcs_cr3000
+
 define Device/pcs_cr5000
   ATH_SOC := ar9344
   DEVICE_TITLE := PowerCloud Systems CR5000