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, 82 insertions, 0 deletions

diff --git a/target/linux/ipq806x/patches-4.4/163-dt-bindings-qcom_nandc-Add-DT-bindings.patch b/target/linux/ipq806x/patches-4.4/163-dt-bindings-qcom_nandc-Add-DT-bindings.patch
new file mode 100644
index 0000000..6530eb1
--- /dev/null
+++ b/target/linux/ipq806x/patches-4.4/163-dt-bindings-qcom_nandc-Add-DT-bindings.patch
@@ -0,0 +1,82 @@
+Content-Type: text/plain; charset="utf-8"
+MIME-Version: 1.0
+Content-Transfer-Encoding: 7bit
+Subject: [v3,3/5] dt/bindings: qcom_nandc: Add DT bindings
+From: Archit Taneja <architt@codeaurora.org>
+X-Patchwork-Id: 6927141
+Message-Id: <1438578498-32254-4-git-send-email-architt@codeaurora.org>
+To: linux-mtd@lists.infradead.org, dehrenberg@google.com,
+	cernekee@gmail.com, computersforpeace@gmail.com
+Cc: linux-arm-msm@vger.kernel.org, agross@codeaurora.org,
+	sboyd@codeaurora.org, linux-kernel@vger.kernel.org,
+	Archit Taneja <architt@codeaurora.org>, devicetree@vger.kernel.org
+Date: Mon,  3 Aug 2015 10:38:16 +0530
+
+Add DT bindings document for the Qualcomm NAND controller driver.
+
+Cc: devicetree@vger.kernel.org
+
+v3:
+- Don't use '0x' when specifying nand controller address space
+- Add optional property for on-flash bbt usage
+
+Acked-by: Andy Gross <agross@codeaurora.org>
+Signed-off-by: Archit Taneja <architt@codeaurora.org>
+
+---
+.../devicetree/bindings/mtd/qcom_nandc.txt         | 49 ++++++++++++++++++++++
+ 1 file changed, 49 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/mtd/qcom_nandc.txt
+
+--- /dev/null
++++ b/Documentation/devicetree/bindings/mtd/qcom_nandc.txt
+@@ -0,0 +1,49 @@
++* Qualcomm NAND controller
++
++Required properties:
++- compatible:		should be "qcom,ebi2-nand" for IPQ806x
++- reg:			MMIO address range
++- clocks:		must contain core clock and always on clock
++- clock-names:		must contain "core" for the core clock and "aon" for the
++			always on clock
++- dmas:			DMA specifier, consisting of a phandle to the ADM DMA
++			controller node and the channel number to be used for
++			NAND. Refer to dma.txt and qcom_adm.txt for more details
++- dma-names:		must be "rxtx"
++- qcom,cmd-crci:	must contain the ADM command type CRCI block instance
++			number specified for the NAND controller on the given
++			platform
++- qcom,data-crci:	must contain the ADM data type CRCI block instance
++			number specified for the NAND controller on the given
++			platform
++
++Optional properties:
++- nand-bus-width:	bus width. Must be 8 or 16. If not present, 8 is chosen
++			as default
++
++- nand-ecc-strength:	number of bits to correct per ECC step. Must be 4 or 8
++			bits. If not present, 4 is chosen as default
++- nand-on-flash-bbt:	Create/use on-flash bad block table
++
++The device tree may optionally contain sub-nodes describing partitions of the
++address space. See partition.txt for more detail.
++
++Example:
++
++nand@1ac00000 {
++	compatible = "qcom,ebi2-nandc";
++	reg = <0x1ac00000 0x800>;
++
++	clocks = <&gcc EBI2_CLK>,
++		 <&gcc EBI2_AON_CLK>;
++	clock-names = "core", "aon";
++
++	dmas = <&adm_dma 3>;
++	dma-names = "rxtx";
++	qcom,cmd-crci = <15>;
++	qcom,data-crci = <3>;
++
++	partition@0 {
++	...
++	};
++};