Re: How to add multiple example with conflicting includes

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On Fri, Jul 26, 2019 at 1:11 PM Corentin Labbe
<clabbe.montjoie@xxxxxxxxx> wrote:
>
> Hello
>
> When I try to check the following examples of a devicetree schema:
> examples:
>   - |
>     #include <dt-bindings/interrupt-controller/arm-gic.h>
>     #include <dt-bindings/clock/sun50i-a64-ccu.h>
>     #include <dt-bindings/reset/sun50i-a64-ccu.h>
>
>     crypto: crypto@1c15000 {
>       compatible = "allwinner,sun8i-h3-crypto";
>       reg = <0x01c15000 0x1000>;
>       interrupts = <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>;
>       clocks = <&ccu CLK_BUS_CE>, <&ccu CLK_CE>;
>       clock-names = "ahb", "mod";
>       resets = <&ccu RST_BUS_CE>;
>       reset-names = "ahb";
>     };
>
>   - |
>     #include <dt-bindings/interrupt-controller/arm-gic.h>
>     #include <dt-bindings/clock/sun50i-h6-ccu.h>
>     #include <dt-bindings/reset/sun50i-h6-ccu.h>
>
>     crypto: crypto@1904000 {
>       compatible = "allwinner,sun50i-h6-crypto";
>       reg = <0x01904000 0x1000>;
>       interrupts = <GIC_SPI 87 IRQ_TYPE_LEVEL_HIGH>;
>       clocks = <&ccu CLK_BUS_CE>, <&ccu CLK_CE>, <&ccu CLK_MBUS_CE>;
>       clock-names = "ahb", "mod", "mbus";
>       resets = <&ccu RST_BUS_CE>;
>       reset-names = "ahb";
>     };
>
> I get:
> In file included from Documentation/devicetree/bindings/crypto/allwinner,sun8i-ce.example.dts:42:
> /linux-next/scripts/dtc/include-prefixes/dt-bindings/clock/sun50i-h6-ccu.h:9: warning: "CLK_PLL_PERIPH0" redefined
>  #define CLK_PLL_PERIPH0  3
> [...]
>
> So how can I add multiple examples which need somes conflicting #include to be validated.

2 clocks versus 3 clocks hardly seems like a reason for a 2nd example
and I would just drop it IMO.

You could rename your defines to not collide, but that's kind of painful.

The 3rd option is getting dt-extract-example to spit out N example
files and then build each one separately. That was more complicated
than I cared to figure out with kbuild, so I went the simple route.

Rob



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