ipq806x: add support for Buffalo WXR-2533DHP

Buffalo WXR-2533DHP is a 2.4/5 GHz band 11ac router, based on Qualcomm
IPQ8064.

The U-Boot on WXR-2533DHP employs a complicated dual firmware
protection scheme against corruptions of the kernel and rootfs
images. See the notes in buffalo.sh for details.

specifications:

- Qualcomm IPQ8064 (384 - 1,400 MHz, 2C2T)
- 512 MB of RAM (DDR3)
- 256 MB of Flash (NAND)
- 4T4R 2.4/5 GHz Wlan (QCA9980)
- 5x 10/100/1000 Mbps Ethernet
- 10x LEDs, 8x keys (6x buttons, 2x slide-switches)
- 2x USB 3.0 Type-A
- 12VDC/4A AC Adapter
- UART through-hole on PCB
  - J3: Vcc, GND, TX, RX from USB port side
  - 115200n8

Boot instructions for the initramfs image:

1. Prepare the TFTP server with the initramfs image renamed to
   "wxr2300dhp-initramfs.uImage" and IP address "192.168.11.10".
2. Press the "AOSS" button while powering on the WXR-2533DHP.
3. Wait until the "Wireless" LED flashes before releasing the AOSS button.
   The WXR-2533DHP will grab the image from TFTP server and will boot it.

Flashing instructions:

To persistently write the firmware, flash an openwrt sysupgrade image
from inside the initramfs, for example transfer
via `scp <sysupgrade> root@192.168.1.1:/tmp` and flash on the device
with `sysupgrade -n /tmp/<sysupgrade>`. Then wait ~120 seconds to
let it finish the flashing process.

Signed-off-by: INAGAKI Hiroshi <musashino.open@gmail.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com> [reworded message]

2 files changed, 537 insertions, 2 deletions

diff --git a/target/linux/ipq806x/files-4.14/arch/arm/boot/dts/qcom-ipq8064-wxr-2533dhp.dts b/target/linux/ipq806x/files-4.14/arch/arm/boot/dts/qcom-ipq8064-wxr-2533dhp.dts
new file mode 100644
index 0000000000..7b5ee799ee
--- /dev/null
+++ b/target/linux/ipq806x/files-4.14/arch/arm/boot/dts/qcom-ipq8064-wxr-2533dhp.dts
@@ -0,0 +1,535 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+#include "qcom-ipq8064-v2.0.dtsi"
+
+#include <dt-bindings/input/input.h>
+
+/ {
+	model = "Buffalo WXR-2533DHP";
+	compatible = "buffalo,wxr-2533dhp", "qcom,ipq8064";
+
+	memory@42000000 {
+		reg = <0x42000000 0x1e000000>;
+		device_type = "memory";
+	};
+
+	reserved-memory {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+		rsvd@41200000 {
+			reg = <0x41200000 0x300000>;
+			no-map;
+		};
+	};
+
+	aliases {
+		serial0 = &gsbi4_serial;
+
+		led-boot = &power;
+		led-failsafe = &diag;
+		led-running = &power;
+		led-upgrade = &power;
+	};
+
+	chosen {
+		/* use "ubi_rootfs" volume in "ubi" partition as rootfs */
+		bootargs = "ubi.block=0,1 root=/dev/ubiblock0_1 rootfstype=squashfs";
+		stdout-path = "serial0:115200n8";
+	};
+
+	soc {
+		nand@1ac00000 {
+			status = "okay";
+
+			pinctrl-0 = <&nand_pins>;
+			pinctrl-names = "default";
+
+			cs@0 {
+				reg = <0>;
+				compatible = "qcom,nandcs";
+
+				nand-ecc-strength = <4>;
+				nand-bus-width = <8>;
+				nand-ecc-step-size = <512>;
+
+				partitions {
+					compatible = "fixed-partitions";
+					#address-cells = <1>;
+					#size-cells = <1>;
+
+					ubi@0 {
+						label = "ubi";
+						reg = <0x0000000 0x4000000>;
+					};
+
+					rootfs_1@4000000 {
+						label = "rootfs_1";
+						reg = <0x4000000 0x4000000>;
+					};
+				};
+			};
+		};
+
+		mdio {
+			compatible = "virtual,mdio-gpio";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			gpios = <&qcom_pinmux 1 GPIO_ACTIVE_HIGH>,
+				<&qcom_pinmux 0 GPIO_ACTIVE_HIGH>;
+			pinctrl-0 = <&mdio0_pins>;
+			pinctrl-names = "default";
+
+			ethernet-phy@0 {
+				reg = <0>;
+				qca,ar8327-initvals = <
+					0x00004 0x07600000  /* PAD0_MODE */
+					0x00008 0x01000000  /* PAD5_MODE */
+					0x0000c 0x00000080  /* PAD6_MODE */
+					0x00050 0xcc35cc35  /* LED_CTRL0 */
+					0x00054 0xca35ca35  /* LED_CTRL1 */
+					0x00058 0xc935c935  /* LED_CTRL2 */
+					0x0005c 0x03ffff00  /* LED_CTRL3 */
+					0x000e4 0x0006a545  /* MAC_POWER_SEL */
+					0x000e0 0xc74164de  /* SGMII_CTRL */
+					0x0007c 0x0000007e  /* PORT0_STATUS */
+					0x00094 0x0000007e  /* PORT6_STATUS */
+					>;
+			};
+
+			ethernet-phy@4 {
+				reg = <4>;
+			};
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+		pinctrl-0 = <&led_pins>;
+		pinctrl-names = "default";
+
+		usb {
+			label = "wxr-2533dhp:green:usb";
+			gpios = <&qcom_pinmux 7 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "usbport";
+			trigger-sources = <&hub_port0 &hub_port1>;
+		};
+
+		guestport {
+			label = "wxr-2533dhp:green:guestport";
+			gpios = <&qcom_pinmux 8 GPIO_ACTIVE_HIGH>;
+		};
+
+		diag: diag {
+			label = "wxr-2533dhp:orange:diag";
+			gpios = <&qcom_pinmux 9 GPIO_ACTIVE_HIGH>;
+		};
+
+		internet_orange {
+			label = "wxr-2533dhp:orange:internet";
+			gpios = <&qcom_pinmux 16 GPIO_ACTIVE_HIGH>;
+		};
+
+		internet_white {
+			label = "wxr-2533dhp:white:internet";
+			gpios = <&qcom_pinmux 22 GPIO_ACTIVE_HIGH>;
+		};
+
+		wireless_orange {
+			label = "wxr-2533dhp:orange:wireless";
+			gpios = <&qcom_pinmux 23 GPIO_ACTIVE_HIGH>;
+		};
+
+		wireless_white {
+			label = "wxr-2533dhp:white:wireless";
+			gpios = <&qcom_pinmux 24 GPIO_ACTIVE_HIGH>;
+		};
+
+		router_orange {
+			label = "wxr-2533dhp:orange:router";
+			gpios = <&qcom_pinmux 25 GPIO_ACTIVE_HIGH>;
+		};
+
+		router_white {
+			label = "wxr-2533dhp:white:router";
+			gpios = <&qcom_pinmux 26 GPIO_ACTIVE_LOW>;
+		};
+
+		power: power {
+			label = "wxr-2533dhp:white:power";
+			gpios = <&qcom_pinmux 53 GPIO_ACTIVE_HIGH>;
+		};
+	};
+
+	keys {
+		compatible = "gpio-keys";
+		pinctrl-0 = <&button_pins>;
+		pinctrl-names = "default";
+
+		power {
+			label = "power";
+			gpios = <&qcom_pinmux 58 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_POWER>;
+		};
+
+		reset {
+			label = "reset";
+			gpios = <&qcom_pinmux 54 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+
+		wps {
+			label = "wps";
+			gpios = <&qcom_pinmux 65 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_WPS_BUTTON>;
+		};
+
+		eject {
+			label = "eject";
+			gpios = <&qcom_pinmux 6 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_EJECTCD>;
+		};
+
+		guest {
+			label = "guest";
+			gpios = <&qcom_pinmux 64 GPIO_ACTIVE_LOW>;
+			linux,code = <BTN_0>;
+		};
+
+		ap {
+			label = "ap";
+			gpios = <&qcom_pinmux 55 GPIO_ACTIVE_LOW>;
+			linux,code = <BTN_1>;
+			linux,input-type = <EV_SW>;
+		};
+
+		router {
+			label = "router";
+			gpios = <&qcom_pinmux 56 GPIO_ACTIVE_LOW>;
+			linux,code = <BTN_1>;
+			linux,input-type = <EV_SW>;
+		};
+
+		auto {
+			label = "auto";
+			gpios = <&qcom_pinmux 57 GPIO_ACTIVE_LOW>;
+			linux,code = <BTN_1>;
+			linux,input-type = <EV_SW>;
+		};
+	};
+};
+
+&adm_dma {
+	status = "okay";
+};
+
+&gmac1 {
+	status = "okay";
+
+	phy-mode = "rgmii";
+	qcom,id = <1>;
+
+	pinctrl-0 = <&rgmii2_pins>;
+	pinctrl-names = "default";
+
+	mtd-mac-address = <&ART 6>;
+
+	fixed-link {
+		speed = <1000>;
+		full-duplex;
+	};
+};
+
+&gmac2 {
+	status = "ok";
+
+	phy-mode = "sgmii";
+	qcom,id = <2>;
+
+	mtd-mac-address = <&ART 0>;
+
+	fixed-link {
+		speed = <1000>;
+		full-duplex;
+	};
+};
+
+&gsbi4 {
+	status = "okay";
+	qcom,mode = <GSBI_PROT_I2C_UART>;
+};
+
+&gsbi4_serial {
+	status = "okay";
+
+	pinctrl-0 = <&uart0_pins>;
+	pinctrl-names = "default";
+};
+
+&gsbi5 {
+	status = "okay";
+	qcom,mode = <GSBI_PROT_SPI>;
+
+	spi@1a280000 {
+		status = "okay";
+
+		pinctrl-0 = <&spi_pins>;
+		pinctrl-names = "default";
+
+		cs-gpios = <&qcom_pinmux 20 GPIO_ACTIVE_HIGH>;
+
+		flash@0 {
+			compatible = "jedec,spi-nor";
+			spi-max-frequency = <50000000>;
+			reg = <0>;
+
+			partitions {
+				compatible = "fixed-partitions";
+				#address-cells = <1>;
+				#size-cells = <1>;
+
+				SBL1@0 {
+					label = "SBL1";
+					reg = <0x0 0x10000>;
+					read-only;
+				};
+
+				MIBIB@10000 {
+					label = "MIBIB";
+					reg = <0x10000 0x20000>;
+					read-only;
+				};
+
+				SBL2@30000 {
+					label = "SBL2";
+					reg = <0x30000 0x30000>;
+					read-only;
+				};
+
+				SBL3@60000 {
+					label = "SBL3";
+					reg = <0x60000 0x30000>;
+					read-only;
+				};
+
+				DDRCONFIG@90000 {
+					label = "DDRCONFIG";
+					reg = <0x90000 0x10000>;
+					read-only;
+				};
+
+				SSD@a0000 {
+					label = "SSD";
+					reg = <0xa0000 0x10000>;
+					read-only;
+				};
+
+				TZ@b0000 {
+					label = "TZ";
+					reg = <0xb0000 0x30000>;
+					read-only;
+				};
+
+				RPM@e0000 {
+					label = "RPM";
+					reg = <0xe0000 0x20000>;
+					read-only;
+				};
+
+				APPSBL@100000 {
+					label = "APPSBL";
+					reg = <0x100000 0x70000>;
+					read-only;
+				};
+
+				APPSBLENV@170000 {
+					label = "APPSBLENV";
+					reg = <0x170000 0x10000>;
+					read-only;
+				};
+
+				ART: ART@180000 {
+					label = "ART";
+					reg = <0x180000 0x40000>;
+					read-only;
+				};
+
+				BOOTCONFIG@1c0000 {
+					label = "BOOTCONFIG";
+					reg = <0x1c0000 0x10000>;
+					read-only;
+				};
+
+				APPSBL_1@1d0000 {
+					label = "APPSBL_1";
+					reg = <0x1d0000 0x70000>;
+					read-only;
+				};
+			};
+		};
+	};
+};
+
+&hs_phy_0 {		/* USB3 port 0 HS phy */
+	status = "okay";
+};
+
+&ss_phy_0 {		/* USB3 port 0 SS phy */
+	status = "okay";
+};
+
+&hs_phy_1 {		/* USB3 port 1 HS phy */
+	status = "okay";
+};
+
+&ss_phy_1 {		/* USB3 port 1 SS phy */
+	status = "okay";
+};
+
+&usb3_0 {
+	status = "okay";
+
+	pinctrl-0 = <&usb_pwr_en_pins>;
+	pinctrl-names = "default";
+};
+
+&usb3_1 {
+	status = "okay";
+};
+
+&dwc3_0 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	hub_port0: port@1 {
+		reg = <1>;
+		#trigger-source-cells = <0>;
+	};
+};
+
+&dwc3_1 {
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	hub_port1: port@1 {
+		reg = <1>;
+		#trigger-source-cells = <0>;
+	};
+};
+
+&pcie0 {
+	status = "okay";
+};
+
+&pcie1 {
+	status = "okay";
+	force_gen1 = <1>;
+};
+
+&qcom_pinmux {
+	button_pins: button_pins {
+		mux {
+			pins = "gpio6", "gpio54", "gpio55", "gpio56", "gpio57",
+				"gpio58", "gpio64", "gpio65";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+	};
+
+	led_pins: led_pins {
+		mux {
+			pins = "gpio7", "gpio8", "gpio9", "gpio16", "gpio22",
+				"gpio23", "gpio24", "gpio25", "gpio26", "gpio53";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+	};
+
+	uart0_pins: uart0_pins {
+		mux {
+			pins = "gpio10", "gpio11";
+			function = "gsbi4";
+			drive-strength = <12>;
+			bias-disable;
+		};
+	};
+
+	spi_pins: spi_pins {
+		mux {
+			pins = "gpio18", "gpio19", "gpio21";
+			function = "gsbi5";
+			bias-pull-down;
+		};
+
+		data {
+			pins = "gpio18", "gpio19";
+			drive-strength = <10>;
+		};
+
+		cs{
+			pins = "gpio20";
+			drive-strength = <10>;
+			bias-pull-up;
+		};
+
+		clk {
+			pins = "gpio21";
+			drive-strength = <12>;
+		};
+	};
+
+	mdio0_pins: mdio0_pins {
+		mux {
+			pins = "gpio0", "gpio1";
+			function = "gpio";
+			drive-strength = <8>;
+			bias-disable;
+		};
+	};
+
+	nand_pins: nand_pins {
+		mux {
+			pins = "gpio34", "gpio35", "gpio36",
+			       "gpio37", "gpio38", "gpio39",
+			       "gpio40", "gpio41", "gpio42",
+			       "gpio43", "gpio44", "gpio45",
+			       "gpio46", "gpio47";
+			function = "nand";
+			drive-strength = <10>;
+			bias-disable;
+		};
+
+		pullups {
+			pins = "gpio39";
+			bias-pull-up;
+		};
+
+		hold {
+			pins = "gpio40", "gpio41", "gpio42",
+			       "gpio43", "gpio44", "gpio45",
+			       "gpio46", "gpio47";
+			bias-bus-hold;
+		};
+	};
+
+	rgmii2_pins: rgmii2_pins {
+		mux {
+			pins = "gpio27", "gpio28", "gpio29", "gpio30", "gpio31", "gpio32",
+			       "gpio51", "gpio52", "gpio59", "gpio60", "gpio61", "gpio62" ;
+			function = "rgmii2";
+			drive-strength = <8>;
+			bias-disable;
+		};
+	};
+
+	usb_pwr_en_pins: usb_pwr_en_pins {
+		mux{
+			pins = "gpio68";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-up;
+			output-high;
+		};
+	};
+};
\ No newline at end of file
diff --git a/target/linux/ipq806x/files-4.14/arch/arm/boot/dts/qcom-ipq8064.dtsi b/target/linux/ipq806x/files-4.14/arch/arm/boot/dts/qcom-ipq8064.dtsi
index d38fc29b68..08b8e003a8 100644
--- a/target/linux/ipq806x/files-4.14/arch/arm/boot/dts/qcom-ipq8064.dtsi
+++ b/target/linux/ipq806x/files-4.14/arch/arm/boot/dts/qcom-ipq8064.dtsi
@@ -972,7 +972,7 @@
 
 			status = "disabled";
 
-			dwc3@11000000 {
+			dwc3_0: dwc3@11000000 {
 				compatible = "snps,dwc3";
 				reg = <0x11000000 0xcd00>;
 				interrupts = <0 110 0x4>;
@@ -997,7 +997,7 @@
 
 			status = "disabled";
 
-			dwc3@10000000 {
+			dwc3_1: dwc3@10000000 {
 				compatible = "snps,dwc3";
 				reg = <0x10000000 0xcd00>;
 				interrupts = <0 205 0x4>;