From beedbc2ea0e71c779b92e4d74b928a266d3e86f9 Mon Sep 17 00:00:00 2001
From: Alexander Stein <alexander.stein@systec-electronic.com>
Date: Wed, 4 Nov 2015 09:19:10 +0100
Subject: [PATCH] fsl_qspi: Pet the watchdog while reading/writing

When reading a large blob. e.g. a linux kernel (several MiBs) a watchdog
timeout might occur meanwhile. So pet the watchdog while operating on
the flash.

Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Reviewed-by: York Sun <yorksun@freescale.com>
---
 drivers/spi/fsl_qspi.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/spi/fsl_qspi.c b/drivers/spi/fsl_qspi.c
index ed391142be..feec3e80b6 100644
--- a/drivers/spi/fsl_qspi.c
+++ b/drivers/spi/fsl_qspi.c
@@ -13,6 +13,7 @@
 #include <linux/sizes.h>
 #include <dm.h>
 #include <errno.h>
+#include <watchdog.h>
 #include "fsl_qspi.h"
 
 DECLARE_GLOBAL_DATA_PTR;
@@ -527,6 +528,8 @@ static void qspi_op_read(struct fsl_qspi_priv *priv, u32 *rxbuf, u32 len)
 	to_or_from = priv->sf_addr + priv->cur_amba_base;
 
 	while (len > 0) {
+		WATCHDOG_RESET();
+
 		qspi_write32(priv->flags, &regs->sfar, to_or_from);
 
 		size = (len > RX_BUFFER_SIZE) ?
@@ -574,6 +577,8 @@ static void qspi_op_write(struct fsl_qspi_priv *priv, u8 *txbuf, u32 len)
 
 	status_reg = 0;
 	while ((status_reg & FLASH_STATUS_WEL) != FLASH_STATUS_WEL) {
+		WATCHDOG_RESET();
+
 		qspi_write32(priv->flags, &regs->ipcr,
 			     (SEQID_WREN << QSPI_IPCR_SEQID_SHIFT) | 0);
 		while (qspi_read32(priv->flags, &regs->sr) & QSPI_SR_BUSY_MASK)
-- 
2.25.1