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authorMatthew McClintock <mmcclint@codeaurora.org>2016-06-28 11:35:21 -0700
committerWim Van Sebroeck <wim@iguana.be>2016-07-17 21:03:14 +0200
commit10073a205df269abcbd9c3fbc690a813827107ef (patch)
tree69c908c71c3418f3253d7e6f3242964195f0da27 /drivers/watchdog
parentf0d9d0f4b44ae5503ea368e7f066b20f12ca1d37 (diff)
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>
Diffstat (limited to 'drivers/watchdog')
-rw-r--r--drivers/watchdog/qcom-wdt.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/watchdog/qcom-wdt.c b/drivers/watchdog/qcom-wdt.c
index 111e8a7d2645..5796b5d1b3f2 100644
--- a/drivers/watchdog/qcom-wdt.c
+++ b/drivers/watchdog/qcom-wdt.c
@@ -24,6 +24,7 @@ enum wdt_reg {
WDT_RST,
WDT_EN,
WDT_STS,
+ WDT_BARK_TIME,
WDT_BITE_TIME,
};
@@ -31,6 +32,7 @@ static const u32 reg_offset_data_apcs_tmr[] = {
[WDT_RST] = 0x38,
[WDT_EN] = 0x40,
[WDT_STS] = 0x44,
+ [WDT_BARK_TIME] = 0x4C,
[WDT_BITE_TIME] = 0x5C,
};
@@ -38,6 +40,7 @@ static const u32 reg_offset_data_kpss[] = {
[WDT_RST] = 0x4,
[WDT_EN] = 0x8,
[WDT_STS] = 0xC,
+ [WDT_BARK_TIME] = 0x10,
[WDT_BITE_TIME] = 0x14,
};
@@ -66,6 +69,7 @@ static int qcom_wdt_start(struct watchdog_device *wdd)
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 @@ static int qcom_wdt_restart(struct watchdog_device *wdd, unsigned long action,
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));