linux-kernel - Re: [PATCH V2 2/2] regulator: mt6323: Add support for MT6323 regulator

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Date:	Mon, 25 Jan 2016 14:46:06 +0100
From:	John Crispin <blogic@...nwrt.org>
To:	Javier Martinez Canillas <javier@...hile0.org>
Cc:	Mark Brown <broonie@...nel.org>,
	Steven Liu <steven.liu@...iatek.com>,
	Linux Kernel <linux-kernel@...r.kernel.org>,
	Henry Chen <henryc.chen@...iatek.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	linux-mediatek@...ts.infradead.org,
	Matthias Brugger <matthias.bgg@...il.com>,
	Chen Zhong <chen.zhong@...iatek.com>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH V2 2/2] regulator: mt6323: Add support for MT6323
 regulator



On 25/01/2016 14:25, Javier Martinez Canillas wrote:
> On Mon, Jan 25, 2016 at 10:19 AM, Javier Martinez Canillas
> <javier@...hile0.org> wrote:
> 
> [snip]
> 
>>
>> In fact, the kernel is currently not matching the compatible, it is
>> only matching because you provided a .of_compatible is provided in the
>> mfd_cell.
>>
> 
> Sorry my English was a bit off in this paragraph...
> 
> I tried to say that OF does not traverse MFD sub-devices and lookups a
> device driver that matches the compatible automatically since a MFD
> device is not a bus. Currently it is only trying to match a compatible
> string because the mfd_cell has a .of_compatible set so an of_node is
> assigned on mfd_add_device().
> 
> But it is failing to match because no OF device table is provided and
> the platform bus match callback is falling back to the driver .name to
> match so the compatible is not really used as Mark said.
> 
> Best regards,
> Javier
> 

Hi,

just so i am sure to have understood properly. i just need to drop the
compatible string from [1/2] and resend. if this is the case i will fix
the mt6397 binding doc while at it.

	John