From 10073a205df269abcbd9c3fbc690a813827107ef Mon Sep 17 00:00:00 2001 From: Matthew McClintock Date: Tue, 28 Jun 2016 11:35:21 -0700 Subject: 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 Reviewed-by: Guenter Roeck Signed-off-by: Thomas Pedersen Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck --- drivers/watchdog/qcom-wdt.c | 5 +++++ 1 file changed, 5 insertions(+) --- 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_tm [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 watchdo 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 watch 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));