linux-kernel - Re: [PATCH v10 1/4] dt-binding:Documents of the mbigen bindings

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Message-ID: <5673ED7B.1050700@arm.com>
Date:	Fri, 18 Dec 2015 11:26:51 +0000
From:	Marc Zyngier <marc.zyngier@....com>
To:	Mark Rutland <mark.rutland@....com>,
	"majun (F)" <majun258@...wei.com>
CC:	Catalin.Marinas@....com, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, Will.Deacon@....com,
	jason@...edaemon.net, tglx@...utronix.de, lizefan@...wei.com,
	huxinwei@...wei.com, dingtianhong@...wei.com,
	zhaojunhua@...ilicon.com, liguozhu@...ilicon.com,
	xuwei5@...ilicon.com, wei.chenwei@...ilicon.com,
	guohanjun@...wei.com, wuyun.wu@...wei.com, guodong.xu@...aro.org,
	haojian.zhuang@...aro.org, zhangfei.gao@...aro.org,
	usman.ahmad@...aro.org, klimov.linux@...il.com,
	gabriele.paoloni@...wei.com
Subject: Re: [PATCH v10 1/4] dt-binding:Documents of the mbigen bindings

On 18/12/15 10:58, Mark Rutland wrote:
> On Fri, Dec 18, 2015 at 09:58:20AM +0800, majun (F) wrote:
>> Hi Mark:
>>
>> 在 2015/12/17 21:52, Mark Rutland 写道:
>>> On Thu, Dec 17, 2015 at 07:56:34PM +0800, MaJun wrote:
>>>> From: Ma Jun <majun258@...wei.com>
>> [...]
>>>> +- compatible: Should be "hisilicon,mbigen-v2"
>>>> +
>>>> +- reg: Specifies the base physical address and size of the Mbigen
>>>> +  registers.
>>>> +
>>>> +- interrupt controller: Identifies the node as an interrupt controller
>>>> +
>>>> +- msi-parent: Specifies the MSI controller this mbigen use.
>>>> +  For more detail information,please refer to the generic msi-parent binding in
>>>> +  Documentation/devicetree/bindings/interrupt-controller/msi.txt.
>>>> +
>>>> +- num-msis:Specifies the total number of interrupt this device has.
>>>
>>> Is this the number of pins implemented? Or the number of pins that are
>>> in use?
>>>
>>> The latter feels like something we can derive.
>>
>> num-msis means the total number of pins implemented.
> 
> Ok. In that case I think it should be:
> 
> - num-pins: the total number of pins implemented in this Mbigen
>   instance.
> 
> (with the appropriate fixups in the driver).
> 
> With that:
> 
> Acked-by: Mark Rutland <mark.rutland@....com>
> 
>>>> +- #interrupt-cells : Specifies the number of cells needed to encode an
>>>> +  interrupt source. The value must be 2.
>>>> +
>>>> +  The 1st cell is hardware pin number of the interrupt.This number is local to
>>>> +  each mbigen chip and in the range from 0 to the maximum interrupts number
>>>> +  of the mbigen.
>>>
>>> Just to check: 0 - 63 represent the "reserved" pins, yes?
>>
>> Yes, you are right.
>>
>>>
>>> Other than those questions, this looks good to me.
>>
>> Do i need to post a new patch to update these two questions?
> 
> Hopefully not.
> 
> Marc, are you happy to fold in the s/num-msis/num-pins/ change?

Sure, I'll update the whole thing while merging it.

Thanks,

	M.
-- 
Jazz is not dead. It just smells funny...
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