linux-kernel - Re: [1/2] drivers/watchdog: Document new aspeed optional dev tree properties.

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Date:   Mon, 26 Jun 2017 21:16:22 -0500
From:   Christopher Bostic <cbostic@...ux.vnet.ibm.com>
To:     Guenter Roeck <linux@...ck-us.net>
Cc:     wim@...ana.be, joel@....id.au, linux-kernel@...r.kernel.org,
        linux-watchdog@...r.kernel.org, andrew@...id.au
Subject: Re: [1/2] drivers/watchdog: Document new aspeed optional dev tree
 properties.



On 6/24/17 5:07 PM, Guenter Roeck wrote:
> On Tue, Jun 13, 2017 at 03:38:17PM -0500, Christopher Bostic wrote:
>> Describe new optional property 'external-signal'.  When present in the
>> system device tree an exernal signal is generated on watchdog timeout.
>>
>> Describe new optional property 'no-system-reset'.  When present in the
>> system device tree no system reset is to occur on watchdog timeout.
>> System reset in this case is managed by one of the other watchogs
>> available.
>>
>> Signed-off-by: Christopher Bostic <cbostic@...ux.vnet.ibm.com>
> This requires DT maintainer approval, but DT maintainers were not copied.
> Please resend and use scripts/get_maintainer.pl to determine who to send
> it to.
>
> Guenter

Hi Guenter,

Will resend with maintainers copied.

Thanks
-Chris

>> ---
>>   Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt | 11 +++++++++++
>>   1 file changed, 11 insertions(+)
>>
>> diff --git a/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt b/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt
>> index c5e74d7..4099ea5 100644
>> --- a/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt
>> +++ b/Documentation/devicetree/bindings/watchdog/aspeed-wdt.txt
>> @@ -8,9 +8,20 @@ Required properties:
>>    - reg: physical base address of the controller and length of memory mapped
>>      region
>>   
>> +Optional properties:
>> + - external-signal: If the property is present then an external signal is to
>> +   be generated on watchdog timeout.  If absent, external signal is not
>> +   generated.
>> +
>> + - no-system-reset: If the property is present then system will not be reset
>> +   on watchdog timeout. In this case one of the other watchdogs will handle
>> +   reset.  If absent then the watchdog resets the system on timeout.
>> +
>>   Example:
>>   
>>   	wdt1: watchdog@...85000 {
>>   		compatible = "aspeed,ast2400-wdt";
>>   		reg = <0x1e785000 0x1c>;
>> +		external-signal;
>> +		no-system-reset;
>>   	};