linux-kernel - Re: [PATCHv2 3/3] arm: dts: add bandgap entry for OMAP4460 devices

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Date:	Wed, 15 May 2013 12:36:58 -0400
From:	Eduardo Valentin <eduardo.valentin@...com>
To:	Benoit Cousson <b-cousson@...com>
CC:	Eduardo Valentin <eduardo.valentin@...com>, <tony@...mide.com>,
	<linux-omap@...r.kernel.org>,
	Russell King <linux@....linux.org.uk>,
	<devicetree-discuss@...ts.ozlabs.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCHv2 3/3] arm: dts: add bandgap entry for OMAP4460 devices

On 15-05-2013 11:23, Benoit Cousson wrote:
> Hi Eduardo,
> 
> On 05/15/2013 04:58 PM, Eduardo Valentin wrote:
>> Include bandgap devices for OMAP4460 devices.
>>
>> Cc: "Benoît Cousson" <b-cousson@...com>
>> Cc: Tony Lindgren <tony@...mide.com>
>> Cc: Russell King <linux@....linux.org.uk>
>> Cc: linux-omap@...r.kernel.org
>> Cc: devicetree-discuss@...ts.ozlabs.org
>> Cc: linux-arm-kernel@...ts.infradead.org
>> Cc: linux-kernel@...r.kernel.org
>> Signed-off-by: Eduardo Valentin <eduardo.valentin@...com>
>> ---
>>  arch/arm/boot/dts/omap4460.dtsi | 9 +++++++++
>>  1 file changed, 9 insertions(+)
>>
>> diff --git a/arch/arm/boot/dts/omap4460.dtsi b/arch/arm/boot/dts/omap4460.dtsi
>> index 2cf227c..e5bfbfe 100644
>> --- a/arch/arm/boot/dts/omap4460.dtsi
>> +++ b/arch/arm/boot/dts/omap4460.dtsi
>> @@ -29,4 +29,13 @@
>>  			     <0 55 0x4>;
>>  		ti,hwmods = "debugss";
>>  	};
>> +
>> +	bandgap {
>> +		reg = <0x4a002260 0x4
>> +			0x4a00232C 0x4
>> +			0x4a002378 0x18>;
>> +		compatible = "ti,omap4460-bandgap";
>> +		interrupts = <0 126 4>; /* talert */
>> +		ti,tshut-gpio = <86>;



> 
> Why do you need a custom attribute for GPIO? Cannot you use the standard
> one?

I believe it was by your suggestion :-), during the first attempts to
send this driver. But could not find the thread link :-( sorry.


I guess the reasoning to mark it as a ti specific is because it will be
used as IRQ line to treat thermal shutdown (in SW).

> 
> Where is the gpio controller phandle?
> 
> Usually it looks like this:
> 
> 	gpios = <&gpio1 8 0>;
> 
> 
> Regards,
> Benoit
> 
> 
> 



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