ipq806x: fix "reboot" command

The watchdog driver already registers a restart notifier, we just have
to enable it in the config and in the DT to fix the "reboot" command.

This is done by integratin the following patch-set:
https://lkml.org/lkml/2015/2/20/610

I'm copy-pasting the description below:
qcom-wdt is currently assuming the presence of a dedicated node in DT
to gets its configuration. However, on msm architecture, the watchdog is
usually part of the timer block. So this patch-set is changing the driver
and slightly enhancing the timer DT bindings to provide the relevant clocks
and interrupts.

Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>

SVN-Revision: 44504

1 files changed, 72 insertions, 0 deletions

diff --git a/target/linux/ipq806x/patches/011-watchdog-qcom-use-timer-devicetree-binding.patch b/target/linux/ipq806x/patches/011-watchdog-qcom-use-timer-devicetree-binding.patch
new file mode 100644
index 0000000000..0cd7da1f6d
--- /dev/null
+++ b/target/linux/ipq806x/patches/011-watchdog-qcom-use-timer-devicetree-binding.patch
@@ -0,0 +1,72 @@
+From fded70251b1b58f68de1d3757ece9965f0b75452 Mon Sep 17 00:00:00 2001
+From: Mathieu Olivari <mathieu@codeaurora.org>
+Date: Thu, 19 Feb 2015 20:19:30 -0800
+Subject: [PATCH 1/3] watchdog: qcom: use timer devicetree binding
+
+MSM watchdog configuration happens in the same register block as the
+timer, so we'll use the same binding as the existing timer.
+
+The qcom-wdt will now be probed when devicetree has an entry compatible
+with "qcom,kpss-timer" or "qcom-scss-timer".
+
+Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
+---
+ drivers/watchdog/qcom-wdt.c | 21 +++++++++++++++------
+ 1 file changed, 15 insertions(+), 6 deletions(-)
+
+diff --git a/drivers/watchdog/qcom-wdt.c b/drivers/watchdog/qcom-wdt.c
+index aa85618..aa03ca8 100644
+--- a/drivers/watchdog/qcom-wdt.c
++++ b/drivers/watchdog/qcom-wdt.c
+@@ -20,9 +20,9 @@
+ #include <linux/reboot.h>
+ #include <linux/watchdog.h>
+ 
+-#define WDT_RST		0x0
+-#define WDT_EN		0x8
+-#define WDT_BITE_TIME	0x24
++#define WDT_RST		0x38
++#define WDT_EN		0x40
++#define WDT_BITE_TIME	0x5C
+ 
+ struct qcom_wdt {
+ 	struct watchdog_device	wdd;
+@@ -117,6 +117,8 @@ static int qcom_wdt_probe(struct platform_device *pdev)
+ {
+ 	struct qcom_wdt *wdt;
+ 	struct resource *res;
++	struct device_node *np = pdev->dev.of_node;
++	u32 percpu_offset;
+ 	int ret;
+ 
+ 	wdt = devm_kzalloc(&pdev->dev, sizeof(*wdt), GFP_KERNEL);
+@@ -124,6 +126,14 @@ static int qcom_wdt_probe(struct platform_device *pdev)
+ 		return -ENOMEM;
+ 
+ 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
++
++	/* We use CPU0's DGT for the watchdog */
++	if (of_property_read_u32(np, "cpu-offset", &percpu_offset))
++		percpu_offset = 0;
++
++	res->start += percpu_offset;
++	res->end += percpu_offset;
++
+ 	wdt->base = devm_ioremap_resource(&pdev->dev, res);
+ 	if (IS_ERR(wdt->base))
+ 		return PTR_ERR(wdt->base);
+@@ -203,9 +213,8 @@ static int qcom_wdt_remove(struct platform_device *pdev)
+ }
+ 
+ static const struct of_device_id qcom_wdt_of_table[] = {
+-	{ .compatible = "qcom,kpss-wdt-msm8960", },
+-	{ .compatible = "qcom,kpss-wdt-apq8064", },
+-	{ .compatible = "qcom,kpss-wdt-ipq8064", },
++	{ .compatible = "qcom,kpss-timer" },
++	{ .compatible = "qcom,scss-timer" },
+ 	{ },
+ };
+ MODULE_DEVICE_TABLE(of, qcom_wdt_of_table);
+-- 
+1.9.1
+