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, 263 insertions, 0 deletions

diff --git a/target/linux/ipq806x/patches-4.4/110-DT-PCI-qcom-Document-PCIe-devicetree-bindings.patch b/target/linux/ipq806x/patches-4.4/110-DT-PCI-qcom-Document-PCIe-devicetree-bindings.patch
new file mode 100644
index 0000000000..41f91fae7c
--- /dev/null
+++ b/target/linux/ipq806x/patches-4.4/110-DT-PCI-qcom-Document-PCIe-devicetree-bindings.patch
@@ -0,0 +1,263 @@
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v2,3/5] DT: PCI: qcom: Document PCIe devicetree bindings
+From: Stanimir Varbanov <svarbanov@mm-sol.com>
+X-Patchwork-Id: 6326181
+Message-Id: <1430743338-10441-4-git-send-email-svarbanov@mm-sol.com>
+To: Rob Herring <robh+dt@kernel.org>, Kumar Gala <galak@codeaurora.org>,
+	Mark Rutland <mark.rutland@arm.com>,
+	Grant Likely <grant.likely@linaro.org>,
+	Bjorn Helgaas <bhelgaas@google.com>,
+	Kishon Vijay Abraham I <kishon@ti.com>,
+	Russell King <linux@arm.linux.org.uk>, Arnd Bergmann <arnd@arndb.de>
+Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
+	linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
+	linux-pci@vger.kernel.org, Mathieu Olivari <mathieu@codeaurora.org>,
+	Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
+	Stanimir Varbanov <svarbanov@mm-sol.com>
+Date: Mon,  4 May 2015 15:42:16 +0300
+
+Document Qualcomm PCIe driver devicetree bindings.
+
+Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com>
+
+---
+.../devicetree/bindings/pci/qcom,pcie.txt          |  231 ++++++++++++++++++++
+ 1 files changed, 231 insertions(+), 0 deletions(-)
+ create mode 100644 Documentation/devicetree/bindings/pci/qcom,pcie.txt
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
+@@ -0,0 +1,231 @@
++* Qualcomm PCI express root complex
++
++- compatible:
++	Usage: required
++	Value type: <stringlist>
++	Definition: Value shall include
++		    - "qcom,pcie-v0" for apq/ipq8064
++		    - "qcom,pcie-v1" for apq8084
++
++- reg:
++	Usage: required
++	Value type: <prop-encoded-array>
++	Definition: Register ranges as listed in the reg-names property
++
++- reg-names:
++	Usage: required
++	Value type: <stringlist>
++	Definition: Must include the following entries
++		    - "parf"   Qualcomm specific registers
++		    - "dbi"    Designware PCIe registers
++		    - "elbi"   External local bus interface registers
++		    - "config" PCIe configuration space
++
++- device_type:
++	Usage: required
++	Value type: <string>
++	Definition: Should be "pci". As specified in designware-pcie.txt
++
++- #address-cells:
++	Usage: required
++	Value type: <u32>
++	Definition: Should be set to 3. As specified in designware-pcie.txt
++
++- #size-cells:
++	Usage: required
++	Value type: <u32>
++	Definition: Should be set 2. As specified in designware-pcie.txt
++
++- ranges:
++	Usage: required
++	Value type: <prop-encoded-array>
++	Definition: As specified in designware-pcie.txt
++
++- interrupts:
++	Usage: required
++	Value type: <prop-encoded-array>
++	Definition: MSI interrupt
++
++- interrupt-names:
++	Usage: required
++	Value type: <stringlist>
++	Definition: Should contain "msi"
++
++- #interrupt-cells:
++	Usage: required
++	Value type: <u32>
++	Definition: Should be 1. As specified in designware-pcie.txt
++
++- interrupt-map-mask:
++	Usage: required
++	Value type: <prop-encoded-array>
++	Definition: As specified in designware-pcie.txt
++
++- interrupt-map:
++	Usage: required
++	Value type: <prop-encoded-array>
++	Definition: As specified in designware-pcie.txt
++
++- clocks:
++	Usage: required
++	Value type: <prop-encoded-array>
++	Definition: List of phandle and clock specifier pairs as listed
++		    in clock-names property
++
++- clock-names:
++	Usage: required
++	Value type: <stringlist>
++	Definition: Should contain the following entries
++		    * should be populated for v0 and v1
++		    	- "iface"      Configuration AHB clock
++
++		    * should be populated for v0
++		    	- "core"       Clocks the pcie hw block
++		    	- "phy"        Clocks the pcie PHY block
++
++		    * should be populated for v1
++			- "aux"        Auxiliary (AUX) clock
++		    	- "bus_master" Master AXI clock
++		    	- "bus_slave"  Slave AXI clock
++
++- resets:
++	Usage: required
++	Value type: <prop-encoded-array>
++	Definition: List of phandle and reset specifier pairs as listed
++		    in reset-names property
++
++- reset-names:
++	Usage: required
++	Value type: <stringlist>
++	Definition: Should contain the following entries
++		    * should be populated for v0
++			- "axi"  AXI reset
++			- "ahb"  AHB reset
++			- "por"  POR reset
++			- "pci"  PCI reset
++			- "phy"  PHY reset
++
++		    * should be populated for v1
++			- "core" Core reset
++
++- power-domains:
++	Usage: required (for v1 only)
++	Value type: <prop-encoded-array>
++	Definition: A phandle and power domain specifier pair to the
++		    power domain which is responsible for collapsing
++		    and restoring power to the peripheral
++
++- <name>-supply:
++	Usage: required
++	Value type: <phandle>
++	Definition: List of phandles to the power supply regulator(s)
++		    * should be populated for v0 and v1
++			- "vdda"        core analog power supply
++
++		    * should be populated for v0
++			- "vdda_phy"    analog power supply for PHY
++			- "vdda_refclk" analog power supply for IC which generate
++					reference clock
++
++- phys:
++	Usage: required (for v1 only)
++	Value type: <phandle>
++	Definition: List of phandle(s) as listed in phy-names property
++
++- phy-names:
++	Usage: required (for v1 only)
++	Value type: <stringlist>
++	Definition: Should contain "pciephy"
++
++- <name>-gpio:
++	Usage: optional
++	Value type: <prop-encoded-array>
++	Definition: List of phandle and gpio specifier pairs. Should contain
++		    - "perst"  PCIe endpoint reset signal line
++		    - "pewake" PCIe endpoint wake signal line
++
++- pinctrl-0:
++	Usage: required
++	Value type: <phandle>
++	Definition: List of phandles pointing at a pin(s) configuration
++
++- pinctrl-names
++	Usage: required
++	Value type: <stringlist>
++	Definition: List of names of pinctrl-0 state
++
++* Example for v0
++	pcie0: pci@1b500000 {
++		compatible = "qcom,pcie-v0";
++		reg = <0x1b500000 0x1000
++		       0x1b502000 0x80
++		       0x1b600000 0x100
++		       0x0ff00000 0x100000>;
++		reg-names = "dbi", "elbi", "parf", "config";
++		device_type = "pci";
++		linux,pci-domain = <0>;
++		bus-range = <0x00 0xff>;
++		num-lanes = <1>;
++		#address-cells = <3>;
++		#size-cells = <2>;
++		ranges = <0x81000000 0 0	  0x0fe00000 0 0x00100000   /* I/O */
++			  0x82000000 0 0x00000000 0x08000000 0 0x07e00000>; /* memory */
++		interrupts = <GIC_SPI 35 IRQ_TYPE_NONE>;
++		interrupt-names = "msi";
++		#interrupt-cells = <1>;
++		interrupt-map-mask = <0 0 0 0x7>;
++		interrupt-map = <0 0 0 1 &intc 0 36 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
++				<0 0 0 2 &intc 0 37 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
++				<0 0 0 3 &intc 0 38 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
++				<0 0 0 4 &intc 0 39 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
++		clocks = <&gcc PCIE_A_CLK>,
++			 <&gcc PCIE_H_CLK>,
++			 <&gcc PCIE_PHY_CLK>;
++		clock-names = "core", "iface", "phy";
++		resets = <&gcc PCIE_ACLK_RESET>,
++			 <&gcc PCIE_HCLK_RESET>,
++			 <&gcc PCIE_POR_RESET>,
++			 <&gcc PCIE_PCI_RESET>,
++			 <&gcc PCIE_PHY_RESET>;
++		reset-names = "axi", "ahb", "por", "pci", "phy";
++	};
++
++* Example for v1
++	pcie0@fc520000 {
++		compatible = "qcom,pcie-v1";
++		reg = <0xfc520000 0x2000>,
++		      <0xff000000 0x1000>,
++		      <0xff001000 0x1000>,
++		      <0xff002000 0x2000>;
++		reg-names = "parf", "dbi", "elbi", "config";
++		device_type = "pci";
++		linux,pci-domain = <0>;
++		bus-range = <0x00 0xff>;
++		num-lanes = <1>;
++		#address-cells = <3>;
++		#size-cells = <2>;
++		ranges = <0x81000000 0 0          0xff200000 0 0x00100000   /* I/O */
++			  0x82000000 0 0x00300000 0xff300000 0 0x00d00000>; /* memory */
++		interrupts = <GIC_SPI 243 IRQ_TYPE_NONE>;
++		interrupt-names = "msi";
++		#interrupt-cells = <1>;
++		interrupt-map-mask = <0 0 0 0x7>;
++		interrupt-map = <0 0 0 1 &intc 0 244 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
++				<0 0 0 2 &intc 0 245 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
++				<0 0 0 3 &intc 0 247 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
++				<0 0 0 4 &intc 0 248 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
++		clocks = <&gcc GCC_PCIE_0_CFG_AHB_CLK>,
++			 <&gcc GCC_PCIE_0_MSTR_AXI_CLK>,
++			 <&gcc GCC_PCIE_0_SLV_AXI_CLK>,
++			 <&gcc GCC_PCIE_0_AUX_CLK>;
++		clock-names = "iface", "master_bus", "slave_bus", "aux";
++		resets = <&gcc GCC_PCIE_0_BCR>;
++		reset-names = "core";
++		power-domains = <&gcc PCIE0_GDSC>;
++		vdda-supply = <&pma8084_l3>;
++		phys = <&pciephy0>;
++		phy-names = "pciephy";
++		perst-gpio = <&tlmm 70 GPIO_ACTIVE_LOW>;
++		pinctrl-0 = <&pcie0_pins_default>;
++		pinctrl-names = "default";
++	};