linux/Documentation/devicetree/bindings/watchdog/brcm,bcm2835-pm-wdog.txt

BCM2835 Watchdog timer

Required properties:

- compatible : should be "brcm,bcm2835-pm-wdt"
- reg : Specifies base physical address and size of the registers.

Optional properties:

- timeout-sec   : Contains the watchdog timeout in seconds

Example:

watchdog {
	compatible = "brcm,bcm2835-pm-wdt";
	reg = <0x7e100000 0x28>;
	timeout-sec = <10>;
};
ARM: bcm2835: implement machine restart hook Implement the machine restart hook using the SoC's watchdog timer module. To support this, define a DT binding for the watchdog module, and add it to the device tree. The downstream rpi-split branch contains a full watchdog timer driver implementation, which also implements the restart hook. However, the restart function is largely separate from the watchdog driver, so for simplicity, the restart hook is implemented here directly in the main machine source file. Overall structure (separate setup/restart) functions derived from the picoxcell ARM support. Watchdog register IO sequence taken from code by Simon Arlott. Note that the watchdog module is not documented in BCM2835-ARM-Peripherals.pdf. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org> 2012-09-16 04:18:10 +00:00			`BCM2835 Watchdog timer`

			`Required properties:`

			`- compatible : should be "brcm,bcm2835-pm-wdt"`
			`- reg : Specifies base physical address and size of the registers.`

watchdog: Add Broadcom BCM2835 watchdog timer driver This adds a driver for watchdog timer hardware present on Broadcom BCM2835 SoC, used in Raspberry Pi and Roku 2 devices. Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Tested-by: Stephen Warren <swarren@wwwdotorg.org> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Cc: linux-rpi-kernel@lists.infradead.org Cc: linux-watchdog@vger.kernel.org Cc: devicetree-discuss@lists.ozlabs.org 2013-06-18 17:44:48 +00:00			`Optional properties:`

			`- timeout-sec : Contains the watchdog timeout in seconds`

ARM: bcm2835: implement machine restart hook Implement the machine restart hook using the SoC's watchdog timer module. To support this, define a DT binding for the watchdog module, and add it to the device tree. The downstream rpi-split branch contains a full watchdog timer driver implementation, which also implements the restart hook. However, the restart function is largely separate from the watchdog driver, so for simplicity, the restart hook is implemented here directly in the main machine source file. Overall structure (separate setup/restart) functions derived from the picoxcell ARM support. Watchdog register IO sequence taken from code by Simon Arlott. Note that the watchdog module is not documented in BCM2835-ARM-Peripherals.pdf. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org> 2012-09-16 04:18:10 +00:00			`Example:`

			`watchdog {`
			`compatible = "brcm,bcm2835-pm-wdt";`
			`reg = <0x7e100000 0x28>;`
watchdog: Add Broadcom BCM2835 watchdog timer driver This adds a driver for watchdog timer hardware present on Broadcom BCM2835 SoC, used in Raspberry Pi and Roku 2 devices. Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Tested-by: Stephen Warren <swarren@wwwdotorg.org> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@iguana.be> Cc: linux-rpi-kernel@lists.infradead.org Cc: linux-watchdog@vger.kernel.org Cc: devicetree-discuss@lists.ozlabs.org 2013-06-18 17:44:48 +00:00			`timeout-sec = <10>;`
ARM: bcm2835: implement machine restart hook Implement the machine restart hook using the SoC's watchdog timer module. To support this, define a DT binding for the watchdog module, and add it to the device tree. The downstream rpi-split branch contains a full watchdog timer driver implementation, which also implements the restart hook. However, the restart function is largely separate from the watchdog driver, so for simplicity, the restart hook is implemented here directly in the main machine source file. Overall structure (separate setup/restart) functions derived from the picoxcell ARM support. Watchdog register IO sequence taken from code by Simon Arlott. Note that the watchdog module is not documented in BCM2835-ARM-Peripherals.pdf. Signed-off-by: Stephen Warren <swarren@wwwdotorg.org> 2012-09-16 04:18:10 +00:00			`};`