diff options
Diffstat (limited to 'target/linux/ipq806x/patches-4.4/710-watchdog-qcom-set-WDT_BARK_TIME-register-offset-to-o.patch')
| -rw-r--r-- | target/linux/ipq806x/patches-4.4/710-watchdog-qcom-set-WDT_BARK_TIME-register-offset-to-o.patch | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches-4.4/710-watchdog-qcom-set-WDT_BARK_TIME-register-offset-to-o.patch b/target/linux/ipq806x/patches-4.4/710-watchdog-qcom-set-WDT_BARK_TIME-register-offset-to-o.patch new file mode 100644 index 0000000000..7573c963a7 --- /dev/null +++ b/target/linux/ipq806x/patches-4.4/710-watchdog-qcom-set-WDT_BARK_TIME-register-offset-to-o.patch @@ -0,0 +1,43 @@ +From abc9f55079169806bcc31f29ec27f7df11c6184c Mon Sep 17 00:00:00 2001 +From: Ram Chandra Jangir <rjangi@codeaurora.org> +Date: Thu, 4 Feb 2016 12:41:56 +0530 +Subject: [PATCH 2/2] watchdog: qcom: set WDT_BARK_TIME register offset to one + second less of bite time + +Currently WDT_BARK_TIME register offset is not configured with bark +timeout during wdt_start,and it is taking bark timeout's default value. +For some versions of TZ (secure mode) will consider a BARK the same +as BITE and reset the board. + +So instead let's just configure the BARK time to be less than a second +of the bite timeout so the board does not reset in this scenario + +Change-Id: Ie09850ad7e0470ed721e6924911ca2a81fd9ff8a +Signed-off-by: Ram Chandra Jangir <rjangi@codeaurora.org> +--- + drivers/watchdog/qcom-wdt.c | 2 ++ + 1 file changed, 2 insertions(+) + +diff --git a/drivers/watchdog/qcom-wdt.c b/drivers/watchdog/qcom-wdt.c +index 773dcfa..002274a 100644 +--- a/drivers/watchdog/qcom-wdt.c ++++ b/drivers/watchdog/qcom-wdt.c +@@ -22,6 +22,7 @@ + + #define WDT_RST 0x38 + #define WDT_EN 0x40 ++#define WDT_BARK_TIME 0x4C + #define WDT_BITE_TIME 0x5C + + struct qcom_wdt { +@@ -44,6 +45,7 @@ static int qcom_wdt_start(struct watchdog_device *wdd) + + writel(0, wdt->base + WDT_EN); + writel(1, wdt->base + WDT_RST); ++ writel((wdd->timeout - 1) * wdt->rate, wdt->base + WDT_BARK_TIME); + writel(wdd->timeout * wdt->rate, wdt->base + WDT_BITE_TIME); + writel(1, wdt->base + WDT_EN); + return 0; +-- +2.7.2 + |