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SubjectRe: [PATCH v2 2/2] ARM: dts: sun7i: Add CAN node and can0_pins_a pinctrl settings
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Hello Maxime,

Am 27.03.2017 um 08:46 schrieb Maxime Ripard:
>> @@ -1582,6 +1587,14 @@
>> #size-cells = <0>;
>> };
>>
>> + can0: can@01c2bc00 {
>> + compatible = "allwinner,sun4i-a10-can";
>
> Sorry for not spotting this earlier, but this would need an A20
> compatible too, to deal with the case where it turns out not to be
> compatible.
>
> you can do something like this:
> compatible = "allwinner,sun7i-a20-can", "allwinner,sun4i-a10-can";

Adding "sun7i-a20-can" to the compatible list results in a checkpatch
warning, that the "driver" is not documented.

WARNING: DT compatible string "allwinner,sun7i-a20-can" appears
un-documented -- check ./Documentation/devicetree/bindings/
#27: FILE: arch/arm/boot/dts/sun7i-a20.dtsi:1586:
+ compatible = "allwinner,sun7i-a20-can",

Is it really OK to add a driver that doesn't exist yet?

Thanks,
Patrick

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