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| author | Matthew McClintock <mmcclint@codeaurora.org> | 2016-06-28 11:35:21 -0700 |
|---|---|---|
| committer | Wim Van Sebroeck <wim@iguana.be> | 2016-07-17 21:03:14 +0200 |
| commit | 10073a205df269abcbd9c3fbc690a813827107ef (patch) | |
| tree | 69c908c71c3418f3253d7e6f3242964195f0da27 /drivers/watchdog/qcom-wdt.c | |
| parent | f0d9d0f4b44ae5503ea368e7f066b20f12ca1d37 (diff) | |
| download | lwn-10073a205df269abcbd9c3fbc690a813827107ef.tar.gz lwn-10073a205df269abcbd9c3fbc690a813827107ef.zip | |
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/qcom-wdt.c')
| -rw-r--r-- | drivers/watchdog/qcom-wdt.c | 5 |
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)); |