ath79: add support for Comfast WR650AC v1/v2

This is a dual band 11a/11n router with 1x wan and 4x gig lan ports.

There are two versions of this router which can be identified through
the factory web interface, v1 has 128mb ram and a uboot size of 128k,
v2 has 256mb ram and a uboot size of 256k, the remaining hardware and
PCB markings are the same.

Short specification:

    SoC: Qualcomm Atheros QCA9558 - 720 MHz
    Switch: Atheros AR8327
    Second radio : Qualcomm Atheros QCA9880 802.11ac
    4 LAN/1 WAN 1000Mps Ethernet
    256 MB of RAM (DDR2)
    16 MB of FLASH
    3x2.4 GHz, 3x5GHz antennas

Steps to install :

Option A : Use vendor UI

Option B (if A is not working) :
(a) Download 'backup' from vendor UI and rename it backup.tar.gz
(b) Open the archive, and update the root password in /etc/shadow by
    '$1$9wX3HGfB$X5Sb3kqzzBLdKRUR2kfFd0'
(c) 'Restore' from the archive using the vendor UI. Root password is now
    'aaa'
(d) Scp the firwmware to the device:
    $ scp <openwrt-sysupgrade>.bin root@192.168.1.1:/
(d) ssh to the device and flash the firmware:
    $ cd /
    $ mtd -e firmware -r write <openwrt-sysupgrade>.bin firmware

Signed-off-by: Gareth Parker <gareth41@orcon.net.nz>
Signed-off-by: Ding Tengfei <dtf@comfast.cn>
Signed-off-by: Joan Moreau <jom@grosjo.net>
[reformatted commit message]
Signed-off-by: David Bauer <mail@david-bauer.net>

3 files changed, 258 insertions, 0 deletions

diff --git a/target/linux/ath79/dts/qca9558_comfast_cf-wr650ac-v1.dts b/target/linux/ath79/dts/qca9558_comfast_cf-wr650ac-v1.dts
new file mode 100644
index 0000000000..ff0fc0fe33
--- /dev/null
+++ b/target/linux/ath79/dts/qca9558_comfast_cf-wr650ac-v1.dts
@@ -0,0 +1,80 @@
+// 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 "qca9558_comfast_cf-wr650ac.dtsi"
+
+/ {
+	compatible = "comfast,cf-wr650ac-v1", "qca,qca9558";
+	model = "Comfast CF-WR650AC v1";
+
+	leds {
+		compatible = "gpio-leds";
+
+		wps {
+			label = "cf-wr650ac-v1:blue:wps";
+			gpios = <&gpio 20 GPIO_ACTIVE_LOW>;
+		};
+
+		network {
+			label = "cf-wr650ac-v1:blue:network";
+			gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
+		};
+
+		wlan2g {
+			label = "cf-wr650ac-v1:blue:wlan2";
+			gpios = <&gpio 13 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy1tpt";
+		};
+
+		wlan5g {
+			label = "cf-wr650ac-v1:blue:wlan5";
+			gpios = <&gpio 2 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy0tpt";
+		};
+	};
+
+};
+
+&spi {
+	status = "okay";
+	num-cs = <1>;
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <25000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "u-boot";
+				reg = <0x000000 0x020000>;
+				read-only;
+			};
+
+			art: partition@20000 {
+				label = "art";
+				reg = <0x020000 0x010000>;
+				read-only;
+			};
+
+			partition@30000 {
+				label = "firmware";
+				compatible = "denx,uimage";
+				reg = <0x030000 0xfc0000>;
+			};
+
+			partition@ff0000 {
+				label = "nvram";
+				reg = <0xff0000 0x010000>;
+				read-only;
+			};
+		};
+	};
+};
diff --git a/target/linux/ath79/dts/qca9558_comfast_cf-wr650ac-v2.dts b/target/linux/ath79/dts/qca9558_comfast_cf-wr650ac-v2.dts
new file mode 100644
index 0000000000..fc461d16d0
--- /dev/null
+++ b/target/linux/ath79/dts/qca9558_comfast_cf-wr650ac-v2.dts
@@ -0,0 +1,80 @@
+// 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 "qca9558_comfast_cf-wr650ac.dtsi"
+
+/ {
+	compatible = "comfast,cf-wr650ac-v2", "qca,qca9558";
+	model = "Comfast CF-WR650AC v2";
+
+	leds {
+		compatible = "gpio-leds";
+
+		wps {
+			label = "cf-wr650ac-v2:blue:wps";
+			gpios = <&gpio 20 GPIO_ACTIVE_LOW>;
+		};
+
+		network {
+			label = "cf-wr650ac-v2:blue:network";
+			gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
+		};
+
+		wlan2g {
+			label = "cf-wr650ac-v2:blue:wlan2";
+			gpios = <&gpio 13 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy1tpt";
+		};
+
+		wlan5g {
+			label = "cf-wr650ac-v2:blue:wlan5";
+			gpios = <&gpio 2 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy0tpt";
+		};
+	};
+
+};
+
+&spi {
+	status = "okay";
+	num-cs = <1>;
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <25000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "u-boot";
+				reg = <0x000000 0x040000>;
+				read-only;
+			};
+
+			art: partition@40000 {
+				label = "art";
+				reg = <0x040000 0x010000>;
+				read-only;
+			};
+
+			partition@50000 {
+				label = "firmware";
+				compatible = "denx,uimage";
+				reg = <0x050000 0xfa0000>;
+			};
+
+			partition@ff0000 {
+				label = "nvram";
+				reg = <0xff0000 0x010000>;
+				read-only;
+			};
+		};
+	};
+};
diff --git a/target/linux/ath79/dts/qca9558_comfast_cf-wr650ac.dtsi b/target/linux/ath79/dts/qca9558_comfast_cf-wr650ac.dtsi
new file mode 100644
index 0000000000..5f7498a06e
--- /dev/null
+++ b/target/linux/ath79/dts/qca9558_comfast_cf-wr650ac.dtsi
@@ -0,0 +1,98 @@
+// 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 "qca9557.dtsi"
+
+/ {
+	chosen {
+		bootargs = "console=ttyS0,115200n8";
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		button0 {
+			label = "reset";
+			linux,code = <KEY_RESTART>;
+			gpios = <&gpio 19 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
+	};
+
+	watchdog {
+		compatible = "linux,wdt-gpio";
+		gpios = <&gpio 17 GPIO_ACTIVE_LOW>;
+		hw_algo = "toggle";
+		hw_margin_ms = <500>;
+		always-running;
+	};
+};
+
+&pcie0 {
+	status = "okay";
+};
+
+&uart {
+	status = "okay";
+};
+
+&usb_phy0 {
+	status = "okay";
+};
+
+&usb0 {
+	status = "okay";
+};
+
+&mdio0 {
+	status = "okay";
+
+	switch0@1f {
+		compatible = "qca,ar8327";
+		reg = <0x1f>;
+		qca,ar8327-initvals = <
+			0x04 0x87600000 /* PORT0 PAD MODE CTRL */
+			0x0c 0x00080080 /* PORT6 PAD MODE CTRL */
+			0x10 0x81000080 /* POWER_ON_STRIP */
+			0x7c 0x0000007e /* PORT0_STATUS */
+			0x94 0x0000007e /* PORT6 STATUS */
+			>;
+	};
+};
+
+&eth0 {
+	status = "okay";
+
+	pll-data = <0xa6000000 0x00000101 0x00001616>;
+	mtd-mac-address = <&art 0x0>;
+	fixed-link {
+		speed = <1000>;
+		full-duplex;
+	};
+};
+
+&eth1 {
+	status = "okay";
+
+	pll-data = <0x03000101 0x00000101 0x00001616>;
+	mtd-mac-address = <&art 0x6>;
+	fixed-link {
+		speed = <1000>;
+		full-duplex;
+	};
+};
+
+&wmac {
+	status = "okay";
+
+	mtd-cal-data = <&art 0x1000>;
+	mtd-mac-address = <&art 0x18>;
+};
+
+// This node is required for the Ethernet ports to work correctly.
+&gpio {
+	status = "okay";
+};