linux-kernel - Re: [PATCH 6/7] ARM: dts: imx6q: add simple-bus compatible string for anatop

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Date:	Wed, 22 Aug 2012 16:52:36 +0800
From:	Richard Zhao <richard.zhao@...escale.com>
To:	Dong Aisheng <b29396@...escale.com>
CC:	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linus.walleij@...ricsson.com>, <s.hauer@...gutronix.de>,
	<shawn.guo@...aro.org>, <kernel@...gutronix.de>,
	<grant.likely@...retlab.ca>, <rob.herring@...xeda.com>,
	<sameo@...ux.intel.com>, <lrg@...com>,
	<broonie@...nsource.wolfsonmicro.com>,
	<devicetree-discuss@...ts.ozlabs.org>, <swarren@...dotorg.org>,
	<paul.liu@...aro.org>
Subject: Re: [PATCH 6/7] ARM: dts: imx6q: add simple-bus compatible string
 for anatop

On Wed, Aug 22, 2012 at 03:18:47PM +0800, Dong Aisheng wrote:
> From: Dong Aisheng <dong.aisheng@...aro.org>
> 
> Originally the anatop regulator devices are populated by mfd anatop driver.
> Since mfd anatop driver will be deleted later, we change to populate the
> regulator devices by devicetree automatically.
> This will cause some warning messages as follows during boot due to device
> recreation: "vdd1p1: Failed to create debugfs directory"
> But it does not break any function.
> Later, we will remove mfd anatop driver which can get rid of this
> error message.
> 
> Signed-off-by: Dong Aisheng <dong.aisheng@...aro.org>
> ---
>  arch/arm/boot/dts/imx6q.dtsi |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/imx6q.dtsi b/arch/arm/boot/dts/imx6q.dtsi
> index 7076be0..426f735 100644
> --- a/arch/arm/boot/dts/imx6q.dtsi
> +++ b/arch/arm/boot/dts/imx6q.dtsi
> @@ -379,7 +379,7 @@
>  			};
>  
>  			anatop: anatop@...c8000 {
> -				compatible = "fsl,imx6q-anatop", "fsl,imx-syscon";
> +				compatible = "fsl,imx6q-anatop", "fsl,imx-syscon", "simple-bus";
To prevent bisect break, it should merge with patch #4.
It's really strange to use simple-bus, because it's not a bus.
I like more the way how anatop driver handle it. Anatop driver populate
devices in its code.

Thanks
Richard
>  				reg = <0x020c8000 0x1000>;
>  				interrupts = <0 49 0x04 0 54 0x04 0 127 0x04>;
>  
> -- 
> 1.7.0.4
> 

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