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

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Message-ID: <5194D123.4060403@ti.com>
Date:	Thu, 16 May 2013 08:29:23 -0400
From:	Eduardo Valentin <eduardo.valentin@...com>
To:	Jean-Christophe PLAGNIOL-VILLARD <plagnioj@...osoft.com>
CC:	Eduardo Valentin <eduardo.valentin@...com>,
	Benoit Cousson <b-cousson@...com>,
	Russell King <linux@....linux.org.uk>, <tony@...mide.com>,
	<devicetree-discuss@...ts.ozlabs.org>,
	<linux-kernel@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCHv2 3/3] arm: dts: add bandgap entry for OMAP4460 devices

On 15-05-2013 12:57, Jean-Christophe PLAGNIOL-VILLARD wrote:
> On 12:36 Wed 15 May     , Eduardo Valentin wrote:
>> 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).
> so use interrup-parent

Jean-Christophe,

That will change the controller and break the configuration for the
other IRQ line, coming from GIC.

>>
>>>
>>> Where is the gpio controller phandle?
>>>
>>> Usually it looks like this:
>>>
>>> 	gpios = <&gpio1 8 0>;
>>>
>>>
>>> Regards,
>>> Benoit
>>>
>>>
>>>
>>
>>
> 
> 
> 
>> _______________________________________________
>> linux-arm-kernel mailing list
>> linux-arm-kernel@...ts.infradead.org
>> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
> 
> 
> 

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