bcm4908: prepare to support TP-Link Archer C2300 V1

It's a BCM4906 based device (2 CPU cores). It has 512 MiB of RAM, 4 LAN
ports, 1 WAN port, 2 USB ports, NAND flash. WiFi unknown at this point.

Flashing is possible using CFE only, proper image will be worked on
later.

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
(cherry picked from commit 8d24da14702b8da820bf2e3952d5691f77136018)

5 files changed, 239 insertions, 0 deletions

diff --git a/target/linux/bcm4908/image/Makefile b/target/linux/bcm4908/image/Makefile
index 8a40a1e6a9..59284d7b63 100644
--- a/target/linux/bcm4908/image/Makefile
+++ b/target/linux/bcm4908/image/Makefile
@@ -71,4 +71,14 @@ define Device/netgear_r8000p
 endef
 TARGET_DEVICES += netgear_r8000p
 
+define Device/tplink_archer-c2300-v1
+  DEVICE_VENDOR := TP-Link
+  DEVICE_MODEL := Archer C2300
+  DEVICE_VARIANT := v1
+  DEVICE_DTS := broadcom/bcm4908/bcm4906-tplink-archer-c2300-v1
+  IMAGES := bin
+  IMAGE/bin := append-ubi | bcm4908img
+endef
+TARGET_DEVICES += tplink_archer-c2300-v1
+
 $(eval $(call BuildImage))
diff --git a/target/linux/bcm4908/image/tplink_archer-c2300-v1/etc/image_version b/target/linux/bcm4908/image/tplink_archer-c2300-v1/etc/image_version
new file mode 100644
index 0000000000..4fc5b5c933
--- /dev/null
+++ b/target/linux/bcm4908/image/tplink_archer-c2300-v1/etc/image_version
@@ -0,0 +1 @@
+5022HNDrc7HND2221446
diff --git a/target/linux/bcm4908/image/tplink_archer-c2300-v1/nvram.nvm b/target/linux/bcm4908/image/tplink_archer-c2300-v1/nvram.nvm
new file mode 100755
index 0000000000..422f391733
--- /dev/null
+++ b/target/linux/bcm4908/image/tplink_archer-c2300-v1/nvram.nvm
diff --git a/target/linux/bcm4908/patches-5.4/131-0001-dt-bindings-arm-bcm-document-TP-Link-Archer-C2300-bi.patch b/target/linux/bcm4908/patches-5.4/131-0001-dt-bindings-arm-bcm-document-TP-Link-Archer-C2300-bi.patch
new file mode 100644
index 0000000000..911237be9a
--- /dev/null
+++ b/target/linux/bcm4908/patches-5.4/131-0001-dt-bindings-arm-bcm-document-TP-Link-Archer-C2300-bi.patch
@@ -0,0 +1,21 @@
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Fri, 5 Mar 2021 13:34:03 +0100
+Subject: [PATCH] dt-bindings: arm: bcm: document TP-Link Archer C2300 binding
+
+One more BCM4906 based device.
+
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+---
+ Documentation/devicetree/bindings/arm/bcm/brcm,bcm4908.yaml | 1 +
+ 1 file changed, 1 insertion(+)
+
+--- a/Documentation/devicetree/bindings/arm/bcm/brcm,bcm4908.yaml
++++ b/Documentation/devicetree/bindings/arm/bcm/brcm,bcm4908.yaml
+@@ -21,6 +21,7 @@ properties:
+         items:
+           - enum:
+               - netgear,r8000p
++              - tplink,archer-c2300-v1
+           - const: brcm,bcm4906
+           - const: brcm,bcm4908
+ 
diff --git a/target/linux/bcm4908/patches-5.4/131-0002-arm64-dts-broadcom-bcm4908-add-TP-Link-Archer-C2300-.patch b/target/linux/bcm4908/patches-5.4/131-0002-arm64-dts-broadcom-bcm4908-add-TP-Link-Archer-C2300-.patch
new file mode 100644
index 0000000000..cc1835e799
--- /dev/null
+++ b/target/linux/bcm4908/patches-5.4/131-0002-arm64-dts-broadcom-bcm4908-add-TP-Link-Archer-C2300-.patch
@@ -0,0 +1,207 @@
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Fri, 5 Mar 2021 13:36:25 +0100
+Subject: [PATCH] arm64: dts: broadcom: bcm4908: add TP-Link Archer C2300 V1
+
+Archer C2300 V1 is a home router based on the BCM4906 (2 CPU cores). It
+has 512 MiB of RAM, NAND flash, USB 2.0 and USB 3.0 ports, 4 LAN ports,
+1 WAN port.
+
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+---
+ arch/arm64/boot/dts/broadcom/bcm4908/Makefile |   1 +
+ .../bcm4906-tplink-archer-c2300-v1.dts        | 182 ++++++++++++++++++
+ 2 files changed, 183 insertions(+)
+ create mode 100644 arch/arm64/boot/dts/broadcom/bcm4908/bcm4906-tplink-archer-c2300-v1.dts
+
+--- a/arch/arm64/boot/dts/broadcom/bcm4908/Makefile
++++ b/arch/arm64/boot/dts/broadcom/bcm4908/Makefile
+@@ -1,3 +1,4 @@
+ # SPDX-License-Identifier: GPL-2.0
+ dtb-$(CONFIG_ARCH_BCM4908) += bcm4906-netgear-r8000p.dtb
++dtb-$(CONFIG_ARCH_BCM4908) += bcm4906-tplink-archer-c2300-v1.dtb
+ dtb-$(CONFIG_ARCH_BCM4908) += bcm4908-asus-gt-ac5300.dtb
+--- /dev/null
++++ b/arch/arm64/boot/dts/broadcom/bcm4908/bcm4906-tplink-archer-c2300-v1.dts
+@@ -0,0 +1,182 @@
++// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
++
++#include <dt-bindings/gpio/gpio.h>
++#include <dt-bindings/input/input.h>
++#include <dt-bindings/leds/common.h>
++
++#include "bcm4906.dtsi"
++
++/ {
++	compatible = "tplink,archer-c2300-v1", "brcm,bcm4906", "brcm,bcm4908";
++	model = "TP-Link Archer C2300 V1";
++
++	memory@0 {
++		device_type = "memory";
++		reg = <0x00 0x00 0x00 0x20000000>;
++	};
++
++	leds {
++		compatible = "gpio-leds";
++
++		power-white {
++			function = LED_FUNCTION_POWER;
++			color = <LED_COLOR_ID_BLUE>;
++			gpios = <&gpio0 0 GPIO_ACTIVE_LOW>;
++		};
++
++		2ghz {
++			function = "2ghz";
++			color = <LED_COLOR_ID_BLUE>;
++			gpios = <&gpio0 2 GPIO_ACTIVE_LOW>;
++		};
++
++		5ghz {
++			function = "5ghz";
++			color = <LED_COLOR_ID_BLUE>;
++			gpios = <&gpio0 3 GPIO_ACTIVE_LOW>;
++		};
++
++		wan-amber {
++			function = LED_FUNCTION_WAN;
++			color = <LED_COLOR_ID_AMBER>;
++			gpios = <&gpio0 4 GPIO_ACTIVE_HIGH>;
++		};
++
++		wan-blue {
++			function = LED_FUNCTION_WAN;
++			color = <LED_COLOR_ID_BLUE>;
++			gpios = <&gpio0 10 GPIO_ACTIVE_LOW>;
++		};
++
++		lan {
++			function = LED_FUNCTION_LAN;
++			color = <LED_COLOR_ID_BLUE>;
++			gpios = <&gpio0 12 GPIO_ACTIVE_LOW>;
++		};
++
++		wps {
++			function = LED_FUNCTION_WPS;
++			color = <LED_COLOR_ID_BLUE>;
++			gpios = <&gpio0 14 GPIO_ACTIVE_LOW>;
++		};
++
++		usb-high-white {
++			function = "usbup";
++			color = <LED_COLOR_ID_BLUE>;
++			gpios = <&gpio0 15 GPIO_ACTIVE_LOW>;
++		};
++
++		usb-low-white {
++			function = "usbdown";
++			color = <LED_COLOR_ID_BLUE>;
++			gpios = <&gpio0 17 GPIO_ACTIVE_LOW>;
++		};
++
++		brightness {
++			function = LED_FUNCTION_BACKLIGHT;
++			color = <LED_COLOR_ID_WHITE>;
++			gpios = <&gpio0 19 GPIO_ACTIVE_LOW>;
++		};
++	};
++
++	gpio-keys-polled {
++		compatible = "gpio-keys-polled";
++		poll-interval = <100>;
++
++		brightness {
++			label = "LEDs";
++			linux,code = <KEY_BRIGHTNESS_ZERO>;
++			gpios = <&gpio0 18 GPIO_ACTIVE_LOW>;
++		};
++
++		wps {
++			label = "WPS";
++			linux,code = <KEY_WPS_BUTTON>;
++			gpios = <&gpio0 21 GPIO_ACTIVE_LOW>;
++		};
++
++		wifi {
++			label = "WiFi";
++			linux,code = <KEY_RFKILL>;
++			gpios = <&gpio0 22 GPIO_ACTIVE_LOW>;
++		};
++
++		restart {
++			label = "Reset";
++			linux,code = <KEY_RESTART>;
++			gpios = <&gpio0 23 GPIO_ACTIVE_LOW>;
++		};
++	};
++};
++
++&usb_phy {
++	brcm,ioc = <1>;
++	status = "okay";
++};
++
++&ehci {
++	status = "okay";
++};
++
++&ohci {
++	status = "okay";
++};
++
++&xhci {
++	status = "okay";
++};
++
++&ports {
++	port@0 {
++		label = "lan4";
++	};
++
++	port@1 {
++		label = "lan3";
++	};
++
++	port@2 {
++		label = "lan2";
++	};
++
++	port@3 {
++		label = "lan1";
++	};
++
++	port@7 {
++		reg = <7>;
++		phy-mode = "internal";
++		phy-handle = <&phy12>;
++		label = "wan";
++	};
++};
++
++&nandcs {
++	nand-ecc-strength = <4>;
++	nand-ecc-step-size = <512>;
++	nand-on-flash-bbt;
++
++	#address-cells = <1>;
++	#size-cells = <0>;
++
++	partitions {
++		compatible = "brcm,bcm4908-partitions";
++		#address-cells = <1>;
++		#size-cells = <1>;
++
++		partition@0 {
++			label = "cferom";
++			reg = <0x0 0x100000>;
++		};
++
++		partition@100000 {
++			compatible = "brcm,bcm4908-firmware";
++			reg = <0x100000 0x3900000>;
++		};
++
++		partition@5800000 {
++			compatible = "brcm,bcm4908-firmware";
++			reg = <0x3a00000 0x3900000>;
++		};
++	};
++};