[RFC PATCH 2/4] watchdog: at91sam9_wdt: update device tree doc

Yang, Wenyou
2013-06-21T01:42:26Z

> -----Original Message-----
> From: linux-arm-kernel [mailto:linux-arm-kernel-bounces at lists.infradead.org]
> On Behalf Of Boris BREZILLON
> Sent: 2013?6?11? 18:51
> To: Wim Van Sebroeck; Jean-Christophe Plagniol-Villard; Ferre, Nicolas
> Cc: linux-watchdog at vger.kernel.org; linux-doc at vger.kernel.org;
> devicetree-discuss at lists.ozlabs.org; linux-kernel at vger.kernel.org; Rob
> Herring; Boris BREZILLON; Rob Landley; Grant Likely;
> linux-arm-kernel at lists.infradead.org
> Subject: [RFC PATCH 2/4] watchdog: at91sam9_wdt: update device tree doc
>
> Add new at91sam9 watchdog properties to the documentation.
>
> Signed-off-by: Boris BREZILLON <b.brezillon@overkiz.com>
> ---
> .../devicetree/bindings/watchdog/atmel-wdt.txt | 30
> ++++++++++++++++++--
> 1 file changed, 28 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/watchdog/atmel-wdt.txt
> b/Documentation/devicetree/bindings/watchdog/atmel-wdt.txt
> index fcdd48f..e043106 100644
> --- a/Documentation/devicetree/bindings/watchdog/atmel-wdt.txt
> +++ b/Documentation/devicetree/bindings/watchdog/atmel-wdt.txt
> @@ -9,11 +9,37 @@ Required properties:
>
> Optional properties:
> - timeout-sec: contains the watchdog timeout in seconds.
> +- interrupts : Should contain WDT interrupt.
> +- atmel,max-heartbeat-sec : Should contain the maximum heartbeat value in
> + seconds. This value should be less than 16. It is used to compute the
> + WDV field.
> +- atmel,max-heartbeat-sec : Should contain the minimum heartbeat value in
Typo, should be,
- atmel,min-heartbeat-sec
> + seconds. This value should be less than 4 times the max-heartbeat-sec
> + value. It is used to compute the WDD field.
> +- atmel,watchdog-type : Should be "hardware" or "software". Hardware
> watchdog
> + use the at91 watchdog reset. Software watchdog use the watcdog
> interrup
> + to trigger a software reset.
> +- atmel,reset-type : Should be "proc" or "all".
> + "all" : assert peripherals and processor reset signals
> + "proc" : assert the processor reset signal
> + This is valid only when using "hardware" watchdog.
> +- atmel,disable : Should be present if you want to disable the watchdog.
> +- atmel,idle-halt : Should be present if you want to stop the watchdog when
> + entering idle state.
> +- atmel,dbg-halt : Should be present if you want to stop the watchdog when
> + entering debug state.
>
> Example:
> -
> watchdog at fffffd40 {
> compatible = "atmel,at91sam9260-wdt";
> reg = <0xfffffd40 0x10>;
> - timeout-sec = <10>;
> + interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
> + timeout-sec = <15>;
> + atmel,watchdog-type = "hardware";
> + atmel,reset-type = "all";
> + atmel,dbg-halt;
> + atmel,idle-halt;
> + atmel,max-heartbeat-sec = <16>;
> + atmel,min-heartbeat-sec = <0>;
> + status = "okay";
> };
> --
> 1.7.9.5
>
>
Best Regards,
Wenyou Yang
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