Due to commits:
* "ARM: shmobile: Add watchdog support",
* "ARM: shmobile: rcar-gen2: Add watchdog support", and
* "soc: renesas: rcar-rst: Enable watchdog as reset trigger for Gen2",
we now have everything we needed for the watchdog to work on Gen2 and
RZ/G1.

This commit adds "renesas,rcar-gen2-wdt" as compatible string for R-Car
Gen2 and RZ/G1, and since on those platforms the rwdt clock needs to be
always ON, when suspending to RAM we need to explicitly disable the
counting by clearing TME from RWTCSRA.

Signed-off-by: Fabrizio Castro <fabrizio.castro-kTT6dE0pTRh9uiUsa/gSgQ@public.gmane.org>
Signed-off-by: Ramesh Shanmugasundaram <ramesh.shanmugasundaram-kTT6dE0pTRh9uiUsa/gSgQ@public.gmane.org>
---
v3->4:
* in this new version the changes to the driver have been splitted into
   two commits, this patch takes care of the basic Gen2 support, patch 13/26
   takes care of the restart handler.

  drivers/watchdog/renesas_wdt.c | 42 +++++++++++++++++++++++++++++++++++++-----
  1 file changed, 37 insertions(+), 5 deletions(-)

diff --git a/drivers/watchdog/renesas_wdt.c b/drivers/watchdog/renesas_wdt.c
index 831ef83..0a1a402 100644
--- a/drivers/watchdog/renesas_wdt.c
+++ b/drivers/watchdog/renesas_wdt.c

@@ -203,13 +203,42 @@ static int rwdt_remove(struct platform_device *pdev)
  	return 0;
  }
  
-/*
- * This driver does also fit for R-Car Gen2 (r8a779[0-4]) WDT. However, for SMP
- * to work there, one also needs a RESET (RST) driver which does not exist yet
- * due to HW issues. This needs to be solved before adding compatibles here.
- */
+#ifdef CONFIG_PM
+static int rwdt_suspend(struct device *dev)
+{
+	struct platform_device *pdev;
+	struct rwdt_priv *priv;
+
+	pdev = to_platform_device(dev);
+	priv = platform_get_drvdata(pdev);
+	if (watchdog_active(&priv->wdev)) {
+		rwdt_write(priv, priv->cks, RWTCSRA);
+	}