ipq806x: add support for Compex WPQ864

Hardware highlights:
- SoC: Qualcomm Atheros IPQ8064/5 ARM Dual Core CPU
- RAM: (512MB or 1GB) DDR3 System Memory
- Storage: 32MB NOR (Cypress S25FL256S1)
           256MB NAND (Micron MT29F2G08ABBEAH4)
- Ethernet: 5 x 1G via QCA8337N
- USB: 1 x USB 2.0/3.0 + 1 x USB 2.0 on mini PCIe3 socket
- PCIe: 3x mini PCIe (third mini PCIE3 is PCIe/USB shared)
- SIM Card Slot: 2 x Slot
- Buttons: Reset Button
- LEDs: 18x, 8x GPIO controllable
- Buzzer

The correct amount of RAM will be passed by the bootloader.

In contrast to the documentation provided by Compex, the third PCIe
doesn't use GPIO16 for PERST. Instead, GPIO3 is shared and used as PERST
for PCIe0 and PCIe2.

So far, no one was able to get USB 3.0 working with the 1GB RAM version,
while it works fine for my 512MB version. Since USB 3.0 doesn't work with
the Compex firmware for the 1G variant either, it could be a hardware
issue with these boards.

OpenWrt will be installed to the NAND flash. Make sure to have a full
working image on the NOR flash. It will be the backup in case anything
goes wrong.

It has been observed that an image loaded via tftpboot might have
bitflips. Hence the extra step to create a crc32 checksum to allow to
compare the checksum with the one from the source file prior to flashing.

In all cases it is necessary to set the following u-boot parameter to an
empty (whitespace) value, to ensure that the chosen bootargs of the dts
isn't overwritten or set to bogus - not working - values:

  (IPQ) # set bootargs " "
  (IPQ) # set fsbootargs " "
  (IPQ) # saveenv

The sysupgrade image can be installed directly on flash using u-boot (put
jumper in JP13 (leave JP9 open) to boot from nand):

  (IPQ) # set serverip 192.168.1.20
  (IPQ) # set ipaddr 192.168.1.1

  (IPQ) # tftpboot 0x42000000 openwrt-ipq806x-compex_wpq864-squashfs-nand-factory.bin
  (IPQ) # crc32 0x42000000 $filesize

  (IPQ) # nand erase 0x1340000 0x4000000
  (IPQ) # nand write 0x42000000 0x1340000 $filesize

The initramfs image can be started using:

  (IPQ) # set fdt_high 0x48000000
  (IPQ) # tftpboot 0x44000000 openwrt-ipq806x-compex_wpq864-initramfs-fit-uImage.itb
  (IPQ) # bootm 0x44000000

Signed-off-by: Christian Mehlis <christian@m3hlis.de>
Signed-off-by: Mathias Kresin <dev@kresin.me>

1 files changed, 570 insertions, 0 deletions

diff --git a/target/linux/ipq806x/files-4.9/arch/arm/boot/dts/qcom-ipq8064-wpq864.dts b/target/linux/ipq806x/files-4.9/arch/arm/boot/dts/qcom-ipq8064-wpq864.dts
new file mode 100644
index 0000000000..9440de5b8f
--- /dev/null
+++ b/target/linux/ipq806x/files-4.9/arch/arm/boot/dts/qcom-ipq8064-wpq864.dts
@@ -0,0 +1,570 @@
+/*
+ *  BSD LICENSE
+ *
+ *  Copyright (C) 2017 Christian Mehlis <christian@m3hlis.de>
+ *  Copyright (C) 2018 Mathias Kresin <dev@kresin.me>
+ *  All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions
+ *  are met:
+ *
+ *    1. Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *    2. Redistributions in binary form must reproduce the above copyright
+ *       notice, this list of conditions and the following disclaimer in the
+ *       documentation and/or other materials provided with the distribution.
+ *    3. Neither the names of the copyright holders nor the names of any
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ *  HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "qcom-ipq8064-v1.0.dtsi"
+
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/soc/qcom,tcsr.h>
+
+/ {
+	compatible = "compex,wpq864", "qcom,ipq8064";
+	model = "Compex WPQ864";
+
+	aliases {
+		mdio-gpio0 = &mdio0;
+		serial0 = &gsbi4_serial;
+		ethernet0 = &gmac1;
+		ethernet1 = &gmac0;
+
+		led-boot = &led_pass;
+		led-failsafe = &led_fail;
+		led-running = &led_pass;
+		led-upgrade = &led_pass;
+	};
+
+	chosen {
+		linux,stdout-path = "serial0:115200n8";
+	};
+
+	soc {
+		rpm@108000  {
+			pinctrl-0 = <&rpm_pins>;
+			pinctrl-names = "default";
+		};
+
+		nand@1ac00000 {
+			status = "okay";
+
+			pinctrl-0 = <&nand_pins>;
+			pinctrl-names = "default";
+
+			mt29f2g08abbeah4@0 {
+				compatible = "qcom,nandcs";
+
+				reg = <0>;
+
+				nand-ecc-strength = <4>;
+				nand-bus-width = <8>;
+				nand-ecc-step-size = <512>;
+
+				partitions {
+					compatible = "fixed-partitions";
+					#address-cells = <1>;
+					#size-cells = <1>;
+
+					SBL1@0 {
+						label = "SBL1";
+						reg = <0x0000000 0x0040000>;
+						read-only;
+					};
+
+					MIBIB@40000 {
+						label = "MIBIB";
+						reg = <0x0040000 0x0140000>;
+						read-only;
+					};
+
+					SBL2@180000 {
+						label = "SBL2";
+						reg = <0x0180000 0x0140000>;
+						read-only;
+					};
+
+					SBL3@2c0000 {
+						label = "SBL3";
+						reg = <0x02c0000 0x0280000>;
+						read-only;
+					};
+
+					DDRCONFIG@540000 {
+						label = "DDRCONFIG";
+						reg = <0x0540000 0x0120000>;
+						read-only;
+					};
+
+					SSD@660000 {
+						label = "SSD";
+						reg = <0x0660000 0x0120000>;
+						read-only;
+					};
+
+					TZ@780000 {
+						label = "TZ";
+						reg = <0x0780000 0x0280000>;
+						read-only;
+					};
+
+					RPM@a00000 {
+						label = "RPM";
+						reg = <0x0a00000 0x0280000>;
+						read-only;
+					};
+
+					APPSBL@c80000 {
+						label = "APPSBL";
+						reg = <0x0c80000 0x0500000>;
+						read-only;
+					};
+
+					APPSBLENV@1180000 {
+						label = "APPSBLENV";
+						reg = <0x1180000 0x0080000>;
+					};
+
+					ART@1200000 {
+						label = "ART";
+						reg = <0x1200000 0x0140000>;
+					};
+
+					ubi@1340000 {
+						label = "ubi";
+						reg = <0x1340000 0x4000000>;
+					};
+
+					BOOTCONFIG@1340000 {
+						label = "BOOTCONFIG";
+						reg = <0x5340000 0x0060000>;
+					};
+
+					SBL2-1@53a0000- {
+						label = "SBL2_1";
+						reg = <0x53a0000 0x0140000>;
+						read-only;
+					};
+
+					SBL3-1@54e0000 {
+						label = "SBL3_1";
+						reg = <0x54e0000 0x0280000>;
+						read-only;
+					};
+
+					DDRCONFIG-1@5760000 {
+						label = "DDRCONFIG_1";
+						reg = <0x5760000 0x0120000>;
+						read-only;
+					};
+
+					SSD-1@5880000 {
+						label = "SSD_1";
+						reg = <0x5880000 0x0120000>;
+						read-only;
+					};
+
+					TZ-1@59a0000 {
+						label = "TZ_1";
+						reg = <0x59a0000 0x0280000>;
+						read-only;
+					};
+
+					RPM-1@5c20000 {
+						label = "RPM_1";
+						reg = <0x5c20000 0x0280000>;
+						read-only;
+					};
+
+					BOOTCONFIG1@5ea0000 {
+						label = "BOOTCONFIG1";
+						reg = <0x5ea0000 0x0060000>;
+					};
+
+					APPSBL-1@5f00000 {
+						label = "APPSBL_1";
+						reg = <0x5f00000 0x0500000>;
+						read-only;
+					};
+
+					ubi-1@6400000 {
+						label = "ubi_1";
+						reg = <0x6400000 0x4000000>;
+					};
+
+					unused@a400000 {
+						label = "unused";
+						reg = <0xa400000 0x5c00000>;
+					};
+				};
+			};
+		};
+	};
+
+	mdio0: mdio {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		compatible = "virtual,mdio-gpio";
+
+		pinctrl-0 = <&mdio0_pins>;
+		pinctrl-names = "default";
+
+		gpios = <&qcom_pinmux 1 GPIO_ACTIVE_HIGH &qcom_pinmux 0 GPIO_ACTIVE_HIGH>;
+
+		ethernet-phy@0 {
+			device_type = "ethernet-phy";
+			reg = <0>;
+			qca,ar8327-initvals = <
+				0x00004 0x7600000   /* PAD0_MODE */
+				0x00008 0x1000000   /* PAD5_MODE */
+				0x0000c 0x80        /* PAD6_MODE */
+				0x000e4 0x6a545     /* MAC_POWER_SEL */
+				0x000e0 0xc74164de  /* SGMII_CTRL */
+				0x0007c 0x4e        /* PORT0_STATUS */
+				0x00094 0x4e        /* PORT6_STATUS */
+				>;
+		};
+
+		ethernet-phy@4 {
+			device_type = "ethernet-phy";
+			reg = <4>;
+		};
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		pinctrl-0 = <&led_pins>;
+		pinctrl-names = "default";
+
+		rss4 {
+			label = "wpq864:green:rss4";
+			gpios = <&qcom_pinmux 23 GPIO_ACTIVE_HIGH>;
+		};
+
+		rss3 {
+			label = "wpq864:green:rss3";
+			gpios = <&qcom_pinmux 24 GPIO_ACTIVE_HIGH>;
+			default-state = "keep";
+		};
+
+		rss2 {
+			label = "wpq864:orange:rss2";
+			gpios = <&qcom_pinmux 25 GPIO_ACTIVE_HIGH>;
+		};
+
+		rss1 {
+			label = "wpq864:red:rss1";
+			gpios = <&qcom_pinmux 22 GPIO_ACTIVE_HIGH>;
+		};
+
+		led_pass: pass {
+			label = "wpq864:green:pass";
+			gpios = <&qcom_pinmux 53 GPIO_ACTIVE_HIGH>;
+		};
+
+		led_fail: fail {
+			label = "wpq864:green:fail";
+			gpios = <&qcom_pinmux 9 GPIO_ACTIVE_HIGH>;
+		};
+
+		usb {
+			label = "wpq864:green:usb";
+			gpios = <&qcom_pinmux 7 GPIO_ACTIVE_HIGH>;
+		};
+
+		usb-pcie {
+			label = "wpq864:green:usb-pcie";
+			gpios = <&qcom_pinmux 8 GPIO_ACTIVE_HIGH>;
+		};
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		pinctrl-0 = <&button_pins>;
+		pinctrl-names = "default";
+
+		reset {
+			label = "reset";
+			gpios = <&qcom_pinmux 54 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+	};
+
+	beeper {
+		compatible = "gpio-beeper";
+
+		pinctrl-0 = <&beeper_pins>;
+		pinctrl-names = "default";
+
+		gpios = <&qcom_pinmux 55 GPIO_ACTIVE_HIGH>;
+	};
+};
+
+&adm_dma {
+	status = "okay";
+};
+
+&gmac1 {
+	status = "okay";
+
+	pinctrl-0 = <&rgmii2_pins>;
+	pinctrl-names = "default";
+
+	phy-mode = "rgmii";
+	qcom,id = <1>;
+
+	fixed-link {
+		speed = <1000>;
+		full-duplex;
+	};
+};
+
+&gmac2 {
+	status = "okay";
+
+	phy-mode = "sgmii";
+	qcom,id = <2>;
+
+	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>;
+
+		s25fl256s1@0 {
+			compatible = "jedec,spi-nor";
+			#address-cells = <1>;
+			#size-cells = <1>;
+			reg = <0>;
+			spi-max-frequency = <50000000>;
+		};
+	};
+};
+
+&hs_phy_0 {		/* USB3 port 0 HS phy */
+	status = "okay";
+};
+
+&hs_phy_1 {		/* USB3 port 1 HS phy */
+	status = "okay";
+};
+
+&ss_phy_0 {		/* USB3 port 0 SS phy */
+	status = "okay";
+
+	rx_eq = <2>;
+	tx_deamp_3_5db = <32>;
+	mpll = <160>;
+};
+
+&ss_phy_1 {		/* USB3 port 1 SS phy */
+	status = "okay";
+
+	rx_eq = <2>;
+	tx_deamp_3_5db = <32>;
+	mpll = <160>;
+};
+
+&pcie0 {
+	status = "okay";
+
+	/delete-property/ pinctrl-0;
+	/delete-property/ pinctrl-names;
+	/delete-property/ perst-gpios;
+};
+
+&pcie1 {
+	status = "okay";
+};
+
+&pcie2 {
+	status = "okay";
+
+	/delete-property/ pinctrl-0;
+	/delete-property/ pinctrl-names;
+	/delete-property/ perst-gpios;
+};
+
+&qcom_pinmux {
+	pinctrl-names = "default";
+	pinctrl-0 = <&state_default>;
+
+	state_default: pinctrl0 {
+		pcie0_pcie2_perst {
+			pins = "gpio3";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-disable;
+			output-high;
+		};
+	};
+
+	led_pins: led_pins {
+		mux {
+			pins = "gpio7", "gpio8", "gpio9",  "gpio22",
+			       "gpio23", "gpio24", "gpio25", "gpio53";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+	};
+
+	button_pins: button_pins {
+		mux {
+			pins = "gpio54";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+	};
+
+	beeper_pins: beeper_pins {
+		mux {
+			pins = "gpio55";
+			function = "gpio";
+			drive-strength = <2>;
+			bias-pull-up;
+		};
+	};
+
+	rpm_pins: rpm_pins {
+		mux {
+			pins = "gpio12", "gpio13";
+			function = "gsbi4";
+			drive-strength = <10>;
+			bias-disable;
+		};
+	};
+
+	uart0_pins: uart0_pins {
+		mux {
+			pins = "gpio10", "gpio11";
+			function = "gsbi4";
+			drive-strength = <10>;
+			bias-disable;
+		};
+	};
+
+	spi_pins: spi_pins {
+		mux {
+			pins = "gpio18", "gpio19";
+			function = "gsbi5";
+			drive-strength = <10>;
+			bias-pull-down;
+		};
+
+		clk {
+			pins = "gpio21";
+			function = "gsbi5";
+			drive-strength = <12>;
+			bias-pull-down;
+		};
+
+		cs {
+			pins = "gpio20";
+			function = "gpio";
+			drive-strength = <10>;
+			bias-pull-up;
+		};
+	};
+
+	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;
+		};
+	};
+
+	mdio0_pins: mdio0_pins {
+		mux {
+			pins = "gpio0", "gpio1";
+			function = "gpio";
+			drive-strength = <8>;
+			bias-disable;
+		};
+	};
+
+	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;
+		};
+	};
+};
+
+&usb3_0 {
+	status = "okay";
+};
+
+
+&usb3_1 {
+	status = "okay";
+};
+
+&tcsr {
+	qcom,usb-ctrl-select = <TCSR_USB_SELECT_USB3_DUAL>;
+};