watchdog: qcom: configure BARK time in addition to BITE time
For certain parts and some versions of TZ, TZ will reset the chip
when a BARK is triggered even though it was not configured here. So
by default let's configure this BARK time as well.
Signed-off-by: Matthew McClintock <mmcclint@codeaurora.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Thomas Pedersen <twp@codeaurora.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
diff --git a/drivers/watchdog/qcom-wdt.c b/drivers/watchdog/qcom-wdt.c
index 111e8a7..5796b5d 100644
--- a/drivers/watchdog/qcom-wdt.c
+++ b/drivers/watchdog/qcom-wdt.c
@@ -24,6 +24,7 @@
WDT_RST,
WDT_EN,
WDT_STS,
+ WDT_BARK_TIME,
WDT_BITE_TIME,
};
@@ -31,6 +32,7 @@
[WDT_RST] = 0x38,
[WDT_EN] = 0x40,
[WDT_STS] = 0x44,
+ [WDT_BARK_TIME] = 0x4C,
[WDT_BITE_TIME] = 0x5C,
};
@@ -38,6 +40,7 @@
[WDT_RST] = 0x4,
[WDT_EN] = 0x8,
[WDT_STS] = 0xC,
+ [WDT_BARK_TIME] = 0x10,
[WDT_BITE_TIME] = 0x14,
};
@@ -66,6 +69,7 @@
writel(0, wdt_addr(wdt, WDT_EN));
writel(1, wdt_addr(wdt, WDT_RST));
+ writel(wdd->timeout * wdt->rate, wdt_addr(wdt, WDT_BARK_TIME));
writel(wdd->timeout * wdt->rate, wdt_addr(wdt, WDT_BITE_TIME));
writel(1, wdt_addr(wdt, WDT_EN));
return 0;
@@ -108,6 +112,7 @@
writel(0, wdt_addr(wdt, WDT_EN));
writel(1, wdt_addr(wdt, WDT_RST));
+ writel(timeout, wdt_addr(wdt, WDT_BARK_TIME));
writel(timeout, wdt_addr(wdt, WDT_BITE_TIME));
writel(1, wdt_addr(wdt, WDT_EN));