>>> Stefan Wahren <stefan.wahren@xxxxxxxx> hat am 2. Januar 2018 um 20:03
>>> geschrieben:
>>>
>>>
>>> Hi Baruch,
>>>
>>>> Baruch Siach <baruch@xxxxxxxxxx> hat am 2. Januar 2018 um 14:19
>>>> geschrieben:
>>>
>>>
>>>> + expgpio: expgpio {
>>>> + compatible = "brcm,bcm2835-expgpio";
>>>> + gpio-controller;
>>>> + #gpio-cells = <2>;
>>>> + firmware = <&firmware>;
>>>
>>>
>>> Please add the gpio-line-names from Eric's patch [1].
>>>
>>> Thanks
>>> Stefan
>>>
>>> [1] - https://patchwork.kernel.org/patch/9339857/
>>>
>>
>> sorry i missed the fact that the same GPIO expander is on the CM3. So
>> please move the exgpio node to bcm2837.dtsi and only define the
>> gpio-line-names in this file.
>
>
> The GPIO expander is not a part of the BCM2837 SoC, and not all
> BCM2837-based Pis have a GPIO expander - see the Pi 2+.
There's two ways that's generally handled upstream, either just
duplicate across the two .dts files or to put it in a separate .dtsi
and include it in the relevant .dts files, see arch/arm/boot/dts/axp*
as relevant examples.
Peter
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