Add Kconfig option WATCHDOG_RESET_DISABLE to disable watchdog reset in imx_watchdog driver, so that the watchdog will not be fed in u-boot if CONFIG_WATCHDOG_RESET_DISABLE is enabled.
Signed-off-by: Xiaoliang Yang xiaoliang.yang_1@nxp.com --- arch/arm/cpu/armv8/fsl-layerscape/doc/README.lsch2 | 2 ++ drivers/watchdog/Kconfig | 6 ++++++ drivers/watchdog/imx_watchdog.c | 2 ++ 3 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/doc/README.lsch2 b/arch/arm/cpu/armv8/fsl-layerscape/doc/README.lsch2 index 9176546..9583bf7 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/doc/README.lsch2 +++ b/arch/arm/cpu/armv8/fsl-layerscape/doc/README.lsch2 @@ -17,3 +17,5 @@ Use following config to set watchdog timeout, if this config is not defined, the default timeout value is 128s which is the maximum. Set 10 seconds for example: #define CONFIG_WATCHDOG_TIMEOUT_MSECS 10000 +Set CONFIG_WATCHDOG_RESET_DISABLE to disable reset watchdog, so that the +watchdog will not be fed in u-boot. diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index d545b3e..d5dbc80 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -11,6 +11,12 @@ config WATCHDOG config HW_WATCHDOG bool
+config WATCHDOG_RESET_DISABLE + bool "Disable reset watchdog" + help + Disable reset watchdog, which can let WATCHDOG_RESET invalid, so + that the watchdog will not be fed in u-boot. + config BCM2835_WDT bool "Enable BCM2835/2836 watchdog driver" select HW_WATCHDOG diff --git a/drivers/watchdog/imx_watchdog.c b/drivers/watchdog/imx_watchdog.c index ddcf474..14cc618 100644 --- a/drivers/watchdog/imx_watchdog.c +++ b/drivers/watchdog/imx_watchdog.c @@ -16,10 +16,12 @@ #ifdef CONFIG_IMX_WATCHDOG void hw_watchdog_reset(void) { +#ifndef CONFIG_WATCHDOG_RESET_DISABLE struct watchdog_regs *wdog = (struct watchdog_regs *)WDOG1_BASE_ADDR;
writew(0x5555, &wdog->wsr); writew(0xaaaa, &wdog->wsr); +#endif /* CONFIG_WATCHDOG_RESET_DISABLE*/ }
void hw_watchdog_init(void)