Hi Rob,
Great thanks for your review :-)
On 14 July 2015 at 22:49, Rob Herring <robherring2@xxxxxxxxx> wrote:
> On Tue, Jun 23, 2015 at 9:16 AM, <fu.wei@xxxxxxxxxx> wrote:
>> From: Fu Wei <fu.wei@xxxxxxxxxx>
>>
>> The sbsa-gwdt.txt documentation in devicetree/bindings/watchdog is for
>> introducing SBSA(Server Base System Architecture) Generic Watchdog
>> device node info into FDT.
>>
>> Acked-by: Arnd Bergmann <arnd@xxxxxxxx>
>> Signed-off-by: Fu Wei <fu.wei@xxxxxxxxxx>
>> ---
>> .../devicetree/bindings/watchdog/sbsa-gwdt.txt | 36 ++++++++++++++++++++++
>> 1 file changed, 36 insertions(+)
>> create mode 100644 Documentation/devicetree/bindings/watchdog/sbsa-gwdt.txt
>>
>> diff --git a/Documentation/devicetree/bindings/watchdog/sbsa-gwdt.txt b/Documentation/devicetree/bindings/watchdog/sbsa-gwdt.txt
>> new file mode 100644
>> index 0000000..010e5c4
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/watchdog/sbsa-gwdt.txt
>> @@ -0,0 +1,36 @@
>> +* SBSA(Server Base System Architecture) Generic Watchdog
>> +
>> +The SBSA Generic Watchdog Timer is used for resetting the system after
>> +two stages of timeout.
>> +More details: ARM-DEN-0029 - Server Base System Architecture (SBSA)
>> +
>> +Required properties:
>> +- compatible : Should at least contain "arm,sbsa-gwdt".
>> +
>> +- reg : base physical address of the frames and length of memory mapped region.
>
> This needs to specify the ordering of refresh and control.
In the FDT binding, Do we have to use ordering? Is the name always optional?
Sorry for questioning this, I just want to confirm that is a rule in
the FDT binding.
If that is a rule, would you let me know : where is it?
In my driver, I get these resource by name, but not ordering, for now
Thanks for your help :-)
>
>> +
>> +- reg-names : Should contain the resource reg names to show the order of
>> + the values in "reg".
>> + Must include the following entries : "refresh", "control".
>
> This should be optional.
>
>> +- interrupts : Should at least contain WS0 interrupt,
>> + the WS1 Signal is optional.
>
> s/Signal/interrupt/ ?
yes, thanks, will fix it.
>
>> +
>> +- interrupt-names : Should contain the resource interrupt names.
>> + Must include the following entries : "ws0". "ws1" is optional.
>
> This should be optional.
>
>> +
>> +Optional properties
>> +- timeout-sec : Watchdog pre-timeout and timeout values (in seconds).
>> + The first is timeout values, then pre-timeout.
>> +
>> +Example for FVP Foundation Model v8:
>> +
>> +watchdog@2a440000 {
>> + compatible = "arm,sbsa-gwdt";
>> + reg = <0x0 0x2a440000 0 0x1000>,
>> + <0x0 0x2a450000 0 0x1000>;
>> + reg-names = "control", "refresh";
>> + interrupts = <0 27 4>;
>> + interrupt-names = "ws0";
>> + timeout-sec = <10 5>;
>> +};
>> --
>> 1.9.1
>>
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Best regards,
Fu Wei
Software Engineer
Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch
Ph: +86 21 61221326(direct)
Ph: +86 186 2020 4684 (mobile)
Room 1512, Regus One Corporate Avenue,Level 15,
One Corporate Avenue,222 Hubin Road,Huangpu District,
Shanghai,China 200021
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