diff options
99 files changed, 1490 insertions, 1537 deletions
diff --git a/Documentation/devicetree/bindings/watchdog/fsl-imx-sc-wdt.txt b/Documentation/devicetree/bindings/watchdog/fsl-imx-sc-wdt.txt new file mode 100644 index 000000000000..02b87e92ae68 --- /dev/null +++ b/Documentation/devicetree/bindings/watchdog/fsl-imx-sc-wdt.txt @@ -0,0 +1,24 @@ +* Freescale i.MX System Controller Watchdog + +i.MX system controller watchdog is for i.MX SoCs with system controller inside, +the watchdog is managed by system controller, users can ONLY communicate with +system controller from secure mode for watchdog operations, so Linux i.MX system +controller watchdog driver will call ARM SMC API and trap into ARM-Trusted-Firmware +for watchdog operations, ARM-Trusted-Firmware is running at secure EL3 mode and +it will request system controller to execute the watchdog operation passed from +Linux kernel. + +Required properties: +- compatible: Should be : + "fsl,imx8qxp-sc-wdt" + followed by "fsl,imx-sc-wdt"; + +Optional properties: +- timeout-sec : Contains the watchdog timeout in seconds. + +Examples: + +watchdog { + compatible = "fsl,imx8qxp-sc-wdt", "fsl,imx-sc-wdt"; + timeout-sec = <60>; +}; diff --git a/Documentation/devicetree/bindings/watchdog/mtk-wdt.txt b/Documentation/devicetree/bindings/watchdog/mtk-wdt.txt index 8682d6a93e5b..fd380eb28df5 100644 --- a/Documentation/devicetree/bindings/watchdog/mtk-wdt.txt +++ b/Documentation/devicetree/bindings/watchdog/mtk-wdt.txt @@ -9,6 +9,7 @@ Required properties: "mediatek,mt7622-wdt", "mediatek,mt6589-wdt": for MT7622 "mediatek,mt7623-wdt", "mediatek,mt6589-wdt": for MT7623 "mediatek,mt7629-wdt", "mediatek,mt6589-wdt": for MT7629 + "mediatek,mt8516-wdt", "mediatek,mt6589-wdt": for MT8516 - reg : Specifies base physical address and size of the registers. diff --git a/drivers/watchdog/Kconfig b/drivers/watchdog/Kconfig index 242eea859637..7ea60371bda0 100644 --- a/drivers/watchdog/Kconfig +++ b/drivers/watchdog/Kconfig @@ -30,7 +30,7 @@ menuconfig WATCHDOG if WATCHDOG config WATCHDOG_CORE - bool "WatchDog Timer Driver Core" + tristate "WatchDog Timer Driver Core" ---help--- Say Y here if you want to use the new watchdog timer driver core. This driver provides a framework for all watchdog timer drivers @@ -63,6 +63,66 @@ config WATCHDOG_SYSFS Say Y here if you want to enable watchdog device status read through sysfs attributes. +comment "Watchdog Pretimeout Governors" + +config WATCHDOG_PRETIMEOUT_GOV + bool "Enable watchdog pretimeout governors" + depends on WATCHDOG_CORE + help + The option allows to select watchdog pretimeout governors. + +config WATCHDOG_PRETIMEOUT_GOV_SEL + tristate + depends on WATCHDOG_PRETIMEOUT_GOV + default m + select WATCHDOG_PRETIMEOUT_GOV_PANIC if WATCHDOG_PRETIMEOUT_GOV_NOOP=n + +if WATCHDOG_PRETIMEOUT_GOV + +config WATCHDOG_PRETIMEOUT_GOV_NOOP + tristate "Noop watchdog pretimeout governor" + depends on WATCHDOG_CORE + default WATCHDOG_CORE + help + Noop watchdog pretimeout governor, only an informational + message is added to kernel log buffer. + +config WATCHDOG_PRETIMEOUT_GOV_PANIC + tristate "Panic watchdog pretimeout governor" + depends on WATCHDOG_CORE + default WATCHDOG_CORE + help + Panic watchdog pretimeout governor, on watchdog pretimeout + event put the kernel into panic. + +choice + prompt "Default Watchdog Pretimeout Governor" + default WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC + help + This option selects a default watchdog pretimeout governor. + The governor takes its action, if a watchdog is capable + to report a pretimeout event. + +config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_NOOP + bool "noop" + depends on WATCHDOG_PRETIMEOUT_GOV_NOOP + help + Use noop watchdog pretimeout governor by default. If noop + governor is selected by a user, write a short message to + the kernel log buffer and don't do any system changes. + +config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC + bool "panic" + depends on WATCHDOG_PRETIMEOUT_GOV_PANIC + help + Use panic watchdog pretimeout governor by default, if + a watchdog pretimeout event happens, consider that + a watchdog feeder is dead and reboot is unavoidable. + +endchoice + +endif # WATCHDOG_PRETIMEOUT_GOV + # # General Watchdog drivers # @@ -90,6 +150,18 @@ config SOFT_WATCHDOG_PRETIMEOUT watchdog. Be aware that governors might affect the watchdog because it is purely software, e.g. the panic governor will stall it! +config BD70528_WATCHDOG + tristate "ROHM BD70528 PMIC Watchdog" + depends on MFD_ROHM_BD70528 + select WATCHDOG_CORE + help + Support for the watchdog in the ROHM BD70528 PMIC. Watchdog trigger + cause system reset. + + Say Y here to include support for the ROHM BD70528 watchdog. + Alternatively say M to compile the driver as a module, + which will be called bd70528_wdt. + config DA9052_WATCHDOG tristate "Dialog DA9052 Watchdog" depends on PMIC_DA9052 || COMPILE_TEST @@ -552,7 +624,7 @@ config COH901327_WATCHDOG compiled as a module. config NPCM7XX_WATCHDOG - bool "Nuvoton NPCM750 watchdog" + tristate "Nuvoton NPCM750 watchdog" depends on ARCH_NPCM || COMPILE_TEST default y if ARCH_NPCM7XX select WATCHDOG_CORE @@ -641,6 +713,22 @@ config IMX2_WDT To compile this driver as a module, choose M here: the module will be called imx2_wdt. +config IMX_SC_WDT + tristate "IMX SC Watchdog" + depends on HAVE_ARM_SMCCC + select WATCHDOG_CORE + help + This is the driver for the system controller watchdog + on the NXP i.MX SoCs with system controller inside, the + watchdog driver will call ARM SMC API and trap into + ARM-Trusted-Firmware for operations, ARM-Trusted-Firmware + will request system controller to execute the operations. + If you have one of these processors and wish to have + watchdog support enabled, say Y, otherwise say N. + + To compile this driver as a module, choose M here: the + module will be called imx_sc_wdt. + config UX500_WATCHDOG tristate "ST-Ericsson Ux500 watchdog" depends on MFD_DB8500_PRCMU @@ -1179,6 +1267,15 @@ config HP_WATCHDOG To compile this driver as a module, choose M here: the module will be called hpwdt. +config HPWDT_NMI_DECODING + bool "NMI support for the HP ProLiant iLO2+ Hardware Watchdog Timer" + depends on HP_WATCHDOG + default y + help + Enables the NMI handler for the watchdog pretimeout NMI and the iLO + "Generate NMI to System" virtual button. When an NMI is claimed + by the driver, panic is called. + config KEMPLD_WDT tristate "Kontron COM Watchdog Timer" depends on MFD_KEMPLD @@ -1190,15 +1287,6 @@ config KEMPLD_WDT This driver can also be built as a module. If so, the module will be called kempld_wdt. -config HPWDT_NMI_DECODING - bool "NMI support for the HP ProLiant iLO2+ Hardware Watchdog Timer" - depends on HP_WATCHDOG - default y - help - Enables the NMI handler for the watchdog pretimeout NMI and the iLO - "Generate NMI to System" virtual button. When an NMI is claimed - by the driver, panic is called. - config SC1200_WDT tristate "National Semiconductor PC87307/PC97307 (ala SC1200) Watchdog" depends on X86 @@ -1647,7 +1735,7 @@ config BCM_KONA_WDT config BCM_KONA_WDT_DEBUG bool "DEBUGFS support for BCM Kona Watchdog" - depends on BCM_KONA_WDT || COMPILE_TEST + depends on BCM_KONA_WDT help If enabled, adds /sys/kernel/debug/bcm_kona_wdt/info which provides access to the driver's internal data structures as well as watchdog @@ -2024,53 +2112,4 @@ config USBPCWATCHDOG Most people will say N. -comment "Watchdog Pretimeout Governors" - -config WATCHDOG_PRETIMEOUT_GOV - bool "Enable watchdog pretimeout governors" - help - The option allows to select watchdog pretimeout governors. - -if WATCHDOG_PRETIMEOUT_GOV - -choice - prompt "Default Watchdog Pretimeout Governor" - default WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC - help - This option selects a default watchdog pretimeout governor. - The governor takes its action, if a watchdog is capable - to report a pretimeout event. - -config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_NOOP - bool "noop" - select WATCHDOG_PRETIMEOUT_GOV_NOOP - help - Use noop watchdog pretimeout governor by default. If noop - governor is selected by a user, write a short message to - the kernel log buffer and don't do any system changes. - -config WATCHDOG_PRETIMEOUT_DEFAULT_GOV_PANIC - bool "panic" - select WATCHDOG_PRETIMEOUT_GOV_PANIC - help - Use panic watchdog pretimeout governor by default, if - a watchdog pretimeout event happens, consider that - a watchdog feeder is dead and reboot is unavoidable. - -endchoice - -config WATCHDOG_PRETIMEOUT_GOV_NOOP - tristate "Noop watchdog pretimeout governor" - help - Noop watchdog pretimeout governor, only an informational - message is added to kernel log buffer. - -config WATCHDOG_PRETIMEOUT_GOV_PANIC - tristate "Panic watchdog pretimeout governor" - help - Panic watchdog pretimeout governor, on watchdog pretimeout - event put the kernel into panic. - -endif # WATCHDOG_PRETIMEOUT_GOV - endif # WATCHDOG diff --git a/drivers/watchdog/Makefile b/drivers/watchdog/Makefile index ba930e464657..7caa920e7e60 100644 --- a/drivers/watchdog/Makefile +++ b/drivers/watchdog/Makefile @@ -68,6 +68,7 @@ obj-$(CONFIG_NUC900_WATCHDOG) += nuc900_wdt.o obj-$(CONFIG_TS4800_WATCHDOG) += ts4800_wdt.o obj-$(CONFIG_TS72XX_WATCHDOG) += ts72xx_wdt.o obj-$(CONFIG_IMX2_WDT) += imx2_wdt.o +obj-$(CONFIG_IMX_SC_WDT) += imx_sc_wdt.o obj-$(CONFIG_UX500_WATCHDOG) += ux500_wdt.o obj-$(CONFIG_RETU_WATCHDOG) += retu_wdt.o obj-$(CONFIG_BCM2835_WDT) += bcm2835_wdt.o @@ -205,6 +206,7 @@ obj-$(CONFIG_WATCHDOG_SUN4V) += sun4v_wdt.o obj-$(CONFIG_XEN_WDT) += xen_wdt.o # Architecture Independent +obj-$(CONFIG_BD70528_WATCHDOG) += bd70528_wdt.o obj-$(CONFIG_DA9052_WATCHDOG) += da9052_wdt.o obj-$(CONFIG_DA9055_WATCHDOG) += da9055_wdt.o obj-$(CONFIG_DA9062_WATCHDOG) += da9062_wdt.o diff --git a/drivers/watchdog/alim7101_wdt.c b/drivers/watchdog/alim7101_wdt.c index 7e9884960eb9..689b8a0593c1 100644 --- a/drivers/watchdog/alim7101_wdt.c +++ b/drivers/watchdog/alim7101_wdt.c @@ -277,8 +277,8 @@ static long fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg) return -EINVAL; timeout = new_timeout; wdt_keepalive(); - /* Fall through */ } + /* Fall through */ case WDIOC_GETTIMEOUT: return put_user(timeout, p); default: diff --git a/drivers/watchdog/armada_37xx_wdt.c b/drivers/watchdog/armada_37xx_wdt.c index 4b4054f54df9..e5dcb26d85f0 100644 --- a/drivers/watchdog/armada_37xx_wdt.c +++ b/ |