Hi Eduardo,
On 05/15/2013 06:36 PM, 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@xxxxxx>
>>> Cc: Tony Lindgren <tony@xxxxxxxxxxx>
>>> Cc: Russell King <linux@xxxxxxxxxxxxxxxx>
>>> Cc: linux-omap@xxxxxxxxxxxxxxx
>>> Cc: devicetree-discuss@xxxxxxxxxxxxxxxx
>>> Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
>>> Cc: linux-kernel@xxxxxxxxxxxxxxx
>>> Signed-off-by: Eduardo Valentin <eduardo.valentin@xxxxxx>
>>> ---
>>> 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.
Ooops :-) I do not remember that... maybe it was long time ago, before
we had any decent binding available for GPIO and IRQ...
> 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).
Mmm, ok, so in that case, it is not even a gpio, but an interrupt entry
that is needed like that:
interrupt-parent = <&gpio3>;
interrupts = <22>; /* gpio line 86 */
Except that we already have an IRQ line connected to GIC for the
Talert... I'm not sure we can have 2 different IRQ controllers for one
device :-(
We need to check.
Regards,
Benoit
>> Where is the gpio controller phandle?
>>
>> Usually it looks like this:
>>
>> gpios = <&gpio1 8 0>;
>>
>>
>> Regards,
>> Benoit
>>
>>
>>
>
>
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