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, 0 insertions, 56 deletions

diff --git a/target/linux/ipq806x/patches-3.18/003-spi-qup-Ensure-done-detection.patch b/target/linux/ipq806x/patches-3.18/003-spi-qup-Ensure-done-detection.patch
deleted file mode 100644
index 7052227810..0000000000
--- a/target/linux/ipq806x/patches-3.18/003-spi-qup-Ensure-done-detection.patch
+++ /dev/null
@@ -1,56 +0,0 @@
-From 4faba89e3ffbb1c5f6232651375b9b3212b50f02 Mon Sep 17 00:00:00 2001
-From: Andy Gross <agross@codeaurora.org>
-Date: Thu, 15 Jan 2015 17:56:02 -0800
-Subject: [PATCH] spi: qup: Ensure done detection
-
-This patch fixes an issue where a SPI transaction has completed, but the done
-condition is missed.  This occurs because at the time of interrupt the
-MAX_INPUT_DONE_FLAG is not asserted.  However, in the process of reading blocks
-of data from the FIFO, the last portion of data comes in.
-
-The opflags read at the beginning of the irq handler no longer matches the
-current opflag state.  To get around this condition, the block read function
-should update the opflags so that done detection is correct after the return.
-
-Change-Id: If109e0eeb432f96000d765c4b34dbb2269f8093f
-Signed-off-by: Andy Gross <agross@codeaurora.org>
----
- drivers/spi/spi-qup.c | 12 +++++++-----
- 1 file changed, 7 insertions(+), 5 deletions(-)
-
---- a/drivers/spi/spi-qup.c
-+++ b/drivers/spi/spi-qup.c
-@@ -298,7 +298,7 @@ static void spi_qup_fifo_write(struct sp
- }
- 
- static void spi_qup_block_read(struct spi_qup *controller,
--	struct spi_transfer *xfer)
-+	struct spi_transfer *xfer, u32 *opflags)
- {
- 	u32 data;
- 	u32 reads_per_blk = controller->in_blk_sz >> 2;
-@@ -327,10 +327,12 @@ static void spi_qup_block_read(struct sp
- 
- 	/*
- 	 * Due to extra stickiness of the QUP_OP_IN_SERVICE_FLAG during block
--	 * reads, it has to be cleared again at the very end
-+	 * reads, it has to be cleared again at the very end.  However, be sure
-+	 * to refresh opflags value because MAX_INPUT_DONE_FLAG may now be
-+	 * present and this is used to determine if transaction is complete
- 	 */
--	if (readl_relaxed(controller->base + QUP_OPERATIONAL) &
--		QUP_OP_MAX_INPUT_DONE_FLAG)
-+	*opflags = readl_relaxed(controller->base + QUP_OPERATIONAL);
-+	if (*opflags & QUP_OP_MAX_INPUT_DONE_FLAG)
- 		writel_relaxed(QUP_OP_IN_SERVICE_FLAG,
- 			controller->base + QUP_OPERATIONAL);
- 
-@@ -633,7 +635,7 @@ static irqreturn_t spi_qup_qup_irq(int i
- 	if (!controller->use_dma) {
- 		if (opflags & QUP_OP_IN_SERVICE_FLAG) {
- 			if (opflags & QUP_OP_IN_BLOCK_READ_REQ)
--				spi_qup_block_read(controller, xfer);
-+				spi_qup_block_read(controller, xfer, &opflags);
- 			else
- 				spi_qup_fifo_read(controller, xfer);
- 		}