ipq806x: Add support for linux-4.4

1)Changes

- Rebased the patches for linux-4.4.7
- Added patch to fix spi nor fifo and dma support
- Added patch to configure watchdog barktime

2)Testing

Tested on IPQ AP148 Board:
 a. NOR boot and NAND boot
 b. ethernet network and ath10k wifi
 c. ubi sysupgrade

UnTested
 dwc3 usb has not been validated on IPQ board(AP148)

3)Known Issues:
 Once we flash ubi image on AP148, and if we reset the board, uboot on
 first boot creates PEB and LEB for dynamic sized partitions, which is incorrect
 and not what linux expects which causes errors when trying to mount rootfs.
 In order to test this, we can use the below steps:
  a. Flash the ubi image on board and don't reset the board
  b. load the kernel fit image in RAM and boot from there.

Signed-off-by: Ram Chandra Jangir <rjangi@codeaurora.org>

1 files changed, 381 insertions, 0 deletions

diff --git a/target/linux/ipq806x/patches-4.4/801-ARM-qcom-add-Netgear-Nighthawk-X4-D7800-device-tree.patch b/target/linux/ipq806x/patches-4.4/801-ARM-qcom-add-Netgear-Nighthawk-X4-D7800-device-tree.patch
new file mode 100644
index 0000000000..eaf037f57e
--- /dev/null
+++ b/target/linux/ipq806x/patches-4.4/801-ARM-qcom-add-Netgear-Nighthawk-X4-D7800-device-tree.patch
@@ -0,0 +1,381 @@
+--- a/arch/arm/boot/dts/Makefile
++++ b/arch/arm/boot/dts/Makefile
+@@ -362,6 +362,7 @@ dtb-$(CONFIG_ARCH_QCOM) += \
+ 	qcom-ipq8064-ap148.dtb \
+ 	qcom-ipq8064-db149.dtb \
+ 	qcom-ipq8064-r7500.dtb \
++	qcom-ipq8064-d7800.dtb \
+ 	qcom-msm8660-surf.dtb \
+ 	qcom-msm8960-cdp.dtb \
+ 	qcom-msm8974-sony-xperia-honami.dtb
+--- /dev/null
++++ b/arch/arm/boot/dts/qcom-ipq8064-d7800.dts
+@@ -0,0 +1,368 @@
++#include "qcom-ipq8064-v1.0.dtsi"
++
++#include <dt-bindings/input/input.h>
++
++/ {
++	model = "Netgear Nighthawk X4 D7800";
++	compatible = "netgear,d7800", "qcom,ipq8064";
++
++	memory@0 {
++		reg = <0x42000000 0xe000000>;
++		device_type = "memory";
++	};
++
++	reserved-memory {
++		#address-cells = <1>;
++		#size-cells = <1>;
++		ranges;
++		rsvd@41200000 {
++			reg = <0x41200000 0x300000>;
++			no-map;
++		};
++	};
++
++	aliases {
++		serial0 = &uart4;
++		mdio-gpio0 = &mdio0;
++	};
++
++	chosen {
++		bootargs = "rootfstype=squashfs noinitrd";
++		linux,stdout-path = "serial0:115200n8";
++	};
++
++	soc {
++		pinmux@800000 {
++			i2c4_pins: i2c4_pinmux {
++				pins = "gpio12", "gpio13";
++				function = "gsbi4";
++				bias-disable;
++			};
++
++			pcie0_pins: pcie0_pinmux {
++				mux {
++					pins = "gpio3";
++					function = "pcie1_rst";
++					drive-strength = <12>;
++					bias-disable;
++				};
++			};
++
++			pcie1_pins: pcie1_pinmux {
++				mux {
++					pins = "gpio48";
++					function = "pcie2_rst";
++					drive-strength = <12>;
++					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;
++				};
++			};
++
++			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;
++				};
++			};
++		};
++
++		gsbi@16300000 {
++			qcom,mode = <GSBI_PROT_I2C_UART>;
++			status = "ok";
++			serial@16340000 {
++				status = "ok";
++			};
++			/*
++			 * The i2c device on gsbi4 should not be enabled.
++			 * On ipq806x designs gsbi4 i2c is meant for exclusive
++			 * RPM usage. Turning this on in kernel manifests as
++			 * i2c failure for the RPM.
++			 */
++		};
++
++		sata-phy@1b400000 {
++			status = "ok";
++		};
++
++		sata@29000000 {
++			status = "ok";
++		};
++
++		phy@100f8800 {		/* USB3 port 1 HS phy */
++			status = "ok";
++		};
++
++		phy@100f8830 {		/* USB3 port 1 SS phy */
++			status = "ok";
++		};
++
++		phy@110f8800 {		/* USB3 port 0 HS phy */
++			status = "ok";
++		};
++
++		phy@110f8830 {		/* USB3 port 0 SS phy */
++			status = "ok";
++		};
++
++		usb30@0 {
++			status = "ok";
++		};
++
++		usb30@1 {
++			status = "ok";
++		};
++
++		pcie0: pci@1b500000 {
++			status = "ok";
++			reset-gpio = <&qcom_pinmux 3 0>;
++			pinctrl-0 = <&pcie0_pins>;
++			pinctrl-names = "default";
++		};
++
++		pcie1: pci@1b700000 {
++			status = "ok";
++			reset-gpio = <&qcom_pinmux 48 0>;
++			pinctrl-0 = <&pcie1_pins>;
++			pinctrl-names = "default";
++		};
++
++		nand@1ac00000 {
++			status = "ok";
++
++			pinctrl-0 = <&nand_pins>;
++			pinctrl-names = "default";
++
++			nand-ecc-strength = <4>;
++			nand-bus-width = <8>;
++
++			#address-cells = <1>;
++			#size-cells = <1>;
++
++			qcadata@0 {
++				label = "qcadata";
++				reg = <0x0000000 0x0c80000>;
++				read-only;
++			};
++
++			APPSBL@c80000 {
++				label = "APPSBL";
++				reg = <0x0c80000 0x0500000>;
++				read-only;
++			};
++
++			APPSBLENV@1180000 {
++				label = "APPSBLENV";
++				reg = <0x1180000 0x0080000>;
++				read-only;
++			};
++
++			art: art@1200000 {
++				label = "art";
++				reg = <0x1200000 0x0140000>;
++				read-only;
++			};
++
++			artbak: art@1340000 {
++				label = "artbak";
++				reg = <0x1340000 0x0140000>;
++				read-only;
++			};
++
++			kernel@1480000 {
++				label = "kernel";
++				reg = <0x1480000 0x0200000>;
++			};
++
++			ubi@1680000 {
++				label = "ubi";
++				reg = <0x1680000 0x1E00000>;
++			};
++
++			netgear@3480000 {
++				label = "netgear";
++				reg = <0x3480000 0x4480000>;
++				read-only;
++			};
++
++			reserve@7900000 {
++				label = "reserve";
++				reg = <0x7900000 0x0700000>;
++				read-only;
++			};
++
++			firmware@1480000 {
++				label = "firmware";
++				reg = <0x1480000 0x2000000>;
++			};
++
++		};
++
++		mdio0: mdio {
++			compatible = "virtual,mdio-gpio";
++			#address-cells = <1>;
++			#size-cells = <0>;
++			gpios = <&qcom_pinmux 1 0 &qcom_pinmux 0 0>;
++			pinctrl-0 = <&mdio0_pins>;
++			pinctrl-names = "default";
++
++			phy0: 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 0xaa545     /* MAC_POWER_SEL */
++					0x000e0 0xc74164de  /* SGMII_CTRL */
++					0x0007c 0x4e        /* PORT0_STATUS */
++					0x00094 0x4e        /* PORT6_STATUS */
++					>;
++			};
++
++			phy4: ethernet-phy@4 {
++				device_type = "ethernet-phy";
++				reg = <4>;
++			};
++		};
++
++		gmac1: ethernet@37200000 {
++			status = "ok";
++			phy-mode = "rgmii";
++			phy-handle = <&phy4>;
++			qcom,id = <1>;
++
++			pinctrl-0 = <&rgmii2_pins>;
++			pinctrl-names = "default";
++
++			mtd-mac-address = <&art 6>;
++		};
++
++		gmac2: ethernet@37400000 {
++			status = "ok";
++			phy-mode = "sgmii";
++			qcom,id = <2>;
++
++			mtd-mac-address = <&art 0>;
++
++			fixed-link {
++				speed = <1000>;
++				full-duplex;
++			};
++		};
++	};
++
++	gpio-keys {
++		compatible = "gpio-keys";
++
++		wifi {
++			label = "wifi";
++			gpios = <&qcom_pinmux 6 1>;
++			linux,code = <KEY_WLAN>;
++		};
++
++		reset {
++			label = "reset";
++			gpios = <&qcom_pinmux 54 1>;
++			linux,code = <KEY_RESTART>;
++		};
++
++		wps {
++			label = "wps";
++			gpios = <&qcom_pinmux 65 1>;
++			linux,code = <KEY_WPS_BUTTON>;
++		};
++	};
++
++	gpio-leds {
++		compatible = "gpio-leds";
++
++		usb1 {
++			label = "d7800:amber:usb1";
++			gpios = <&qcom_pinmux 7 0>;
++		};
++
++		usb3 {
++			label = "d7800:amber:usb3";
++			gpios = <&qcom_pinmux 8 0>;
++		};
++
++		status {
++			label = "d7800:amber:status";
++			gpios = <&qcom_pinmux 9 0>;
++		};
++
++		internet {
++			label = "d7800:white:internet";
++			gpios = <&qcom_pinmux 22 0>;
++		};
++
++		wan {
++			label = "d7800:white:wan";
++			gpios = <&qcom_pinmux 23 0>;
++		};
++
++		wps {
++			label = "d7800:white:wps";
++			gpios = <&qcom_pinmux 24 0>;
++		};
++
++		esata {
++			label = "d7800:white:esata";
++			gpios = <&qcom_pinmux 26 0>;
++		};
++
++		power {
++			label = "d7800:white:power";
++			gpios = <&qcom_pinmux 53 0>;
++			default-state = "on";
++		};
++
++		rfkill {
++			label = "d7800:white:rfkill";
++			gpios = <&qcom_pinmux 64 0>;
++		};
++
++		wifi5g {
++			label = "d7800:white:wifi5g";
++			gpios = <&qcom_pinmux 67 0>;
++		};
++	};
++};
++
++&adm_dma {
++	status = "ok";
++};