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| author | Xiaoliang Yang <xiaoliang.yang_1@nxp.com> | 2018-10-18 18:27:45 +0800 |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2019-01-01 14:12:18 +0100 |
| commit | 005c1cf888a7ad72bd0f9ceb6f6b2eee7720f7b0 (patch) | |
| tree | ee05963d702a2a6fdee4f75992ca417478c3dba9 | |
| parent | 4dcbccf794a330895ee2aeba6964a94b33c60eda (diff) | |
watchdog: driver support for fsl-lsch2
Support watchdog driver for fsl-lsch2. It's disabled in default.
If you want to use it, please enable CONFIG_IMX_WATCHDOG.
Define CONFIG_WATCHDOG_TIMEOUT_MSECS to set watchdog timeout.
Signed-off-by: Xiaoliang Yang <xiaoliang.yang_1@nxp.com>
| -rw-r--r-- | arch/arm/cpu/armv8/fsl-layerscape/doc/README.lsch2 | 9 | ||||
| -rw-r--r-- | drivers/watchdog/Makefile | 2 | ||||
| -rw-r--r-- | drivers/watchdog/imx_watchdog.c | 7 |
3 files changed, 18 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 a6ef830069..9176546525 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/doc/README.lsch2 +++ b/arch/arm/cpu/armv8/fsl-layerscape/doc/README.lsch2 @@ -8,3 +8,12 @@ Freescale LayerScape with Chassis Generation 2 This architecture supports Freescale ARMv8 SoCs with Chassis generation 2, for example LS1043A. + +Watchdog support Overview +------------------- +Support watchdog driver for LSCH2. The driver is disabled in default. +You can enable it by setting CONFIG_IMX_WATCHDOG. +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 diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile index 74738eeaf7..d901240ad1 100644 --- a/drivers/watchdog/Makefile +++ b/drivers/watchdog/Makefile @@ -7,6 +7,8 @@ obj-$(CONFIG_WDT_AT91) += at91sam9_wdt.o obj-$(CONFIG_FTWDT010_WATCHDOG) += ftwdt010_wdt.o ifneq (,$(filter $(SOC), mx25 mx31 mx35 mx5 mx6 mx7 vf610)) obj-y += imx_watchdog.o +else +obj-$(CONFIG_IMX_WATCHDOG) += imx_watchdog.o endif obj-$(CONFIG_S5P) += s5p_wdt.o obj-$(CONFIG_XILINX_TB_WATCHDOG) += xilinx_tb_wdt.o diff --git a/drivers/watchdog/imx_watchdog.c b/drivers/watchdog/imx_watchdog.c index 3f826d10eb..ddcf474996 100644 --- a/drivers/watchdog/imx_watchdog.c +++ b/drivers/watchdog/imx_watchdog.c @@ -8,6 +8,9 @@ #include <asm/io.h> #include <watchdog.h> #include <asm/arch/imx-regs.h> +#ifdef CONFIG_FSL_LSCH2 +#include <asm/arch/immap_lsch2.h> +#endif #include <fsl_wdog.h> #ifdef CONFIG_IMX_WATCHDOG @@ -33,8 +36,12 @@ void hw_watchdog_init(void) #define CONFIG_WATCHDOG_TIMEOUT_MSECS 128000 #endif timeout = (CONFIG_WATCHDOG_TIMEOUT_MSECS / 500) - 1; +#ifdef CONFIG_FSL_LSCH2 + writew((WCR_WDA | WCR_SRS | WCR_WDE) << 8 | timeout, &wdog->wcr); +#else writew(WCR_WDZST | WCR_WDBG | WCR_WDE | WCR_WDT | WCR_SRS | WCR_WDA | SET_WCR_WT(timeout), &wdog->wcr); +#endif /* CONFIG_FSL_LSCH2*/ hw_watchdog_reset(); } #endif |